apport information
** Tags added: apport-collected focal
** Description changed:
A friend of mine has a TOSHIBA SATELLITE C55-C and I installed xUbuntu
20.04 LTS.
I have a minor problem linked to a major problem :
- Minor problem : it is impossible to adjust the light of the screen.
- Major problem : when closing the laptop screen and opening it again,
the light of the screen stay off and it is impossible to turn it on
again.
Can you help me ?
Detail behaviour without changing anything
-----------------------------------------
I discovered that the keyboard button controls the
`/sys/class/backlight/intel_backlight/brightness` and modifying the
light value with keyboard button or directly by 'echo $INT_VALUE >
/sys/class/backlight/intel_backlight/brightness' do the same thing.
You can change screen light value with the light keyboard buttons, but
it does not change anything. The only thing that change is that if you
set the light to '0', then the screen light is off. And when you put a
value more than '0' then the screen light is full luminosity ('1' is the
same effect as '1000').
Not working solutions
---------------------
I have tried a lot of things hoping for a solving solution :
In `/etc/default/grub`, I have tried without success :
- GRUB_CMDLINE_LINUX='acpi_backlight=vendor'
- GRUB_CMDLINE_LINUX='acpi_backlight=vendor acpi_osi=linux'
- GRUB_CMDLINE_LINUX='acpi_backlight=video'
- GRUB_CMDLINE_LINUX='video.disable_backlight_sysfs_if=1'
- GRUB_CMDLINE_LINUX='video.brightness_switch_enabled=0'
- GRUB_CMDLINE_LINUX='pcie_aspm=force acpi_osi=Linux acpi_backlight=legacy'
I have read :
- https://askubuntu.com/a/1311344
- https://askubuntu.com/questions/1034305/brightness-problem-ubuntu-18-04-lts
- https://bbs.archlinux.org/viewtopic.php?id=195967&p=2
-
https://askubuntu.com/questions/451165/toshiba-satellite-p850-fn-keys-not-working
- https://wiki.archlinux.org/index.php/Backlight
- https://bugzilla.redhat.com/show_bug.cgi?id=1126159
Not acceptable solution : 'acpi=off'
------------------------------------
The only solution I have found "working" is to set
"GRUB_CMDLINE_LINUX='acpi=off'".
That way, when closing the laptop screen : the light goes off. And when
opening the laptop screen : the light goes on (max value).
In this configuration, it is impossible to adjust the screen light by
modifying /sys/class/backlight/intel_backlight/brightness.
For example : 'echo 0 > /sys/class/backlight/intel_backlight/brightness'
let the screen light on.
I thought it was an acceptable behaviour, until I saw a major problem.
The computer is slower than before, because only 1 CPU (instead of 4) is
detected.
So I can't stay with that configuration.
Computer specifications
-----------------------
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.
49 structures occupying 2491 bytes.
Table at 0x000E6EE0.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: INSYDE Corp.
Version: 5.20
Release Date: 09/15/2015
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 3072 kB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
EDD is supported
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
ATAPI Zip drive boot is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
BIOS Revision: 5.20
Firmware Revision: 5.0
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: TOSHIBA
Product Name: SATELLITE C55-C
Version: PSCP6E-01F03HFR
Serial Number: YF176764C
UUID: 0a28c286-2265-8c43-896c-6b968f92ea27
Wake-up Type: Power Switch
SKU Number: PSCP6E
Family: Type1 - Family
Handle 0x0002, DMI type 2, 17 bytes
Base Board Information
Manufacturer: FF50
Product Name: 06F5
Version: Type2 - Board Version
Serial Number: QC020RBF4601368
Asset Tag:
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Type2 - Board Chassis Location
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0
Handle 0x0003, DMI type 3, 25 bytes
Chassis Information
Manufacturer: OEM Chassis ManuFacturer
Type: Notebook
Lock: Not Present
Version: OEM Chassis Version
Serial Number: OEM Chassis Serial Number
Asset Tag: No Asset Tag
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00000000
Height: Unspecified
Number Of Power Cords: 1
Contained Elements: 0
SKU Number: SKU Number
Handle 0x0004, DMI type 4, 42 bytes
Processor Information
Socket Designation: CHV
Type: Central Processor
Family: Pentium
Manufacturer: Intel(R) Corporation
ID: C3 06 04 00 FF FB EB BF
Signature: Type 0, Family 6, Model 76, Stepping 3
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Pentium(R) CPU N3700 @ 1.60GHz
Voltage: 4.0 V
External Clock: 83 MHz
Max Speed: 1660 MHz
Current Speed: 1600 MHz
Status: Populated, Enabled
Upgrade: Slot 1
L1 Cache Handle: 0x0006
L2 Cache Handle: 0x0007
L3 Cache Handle: Not Provided
Serial Number: To Be Filled By O.E.M.
Asset Tag: To Be Filled By O.E.M.
Part Number: To Be Filled By O.E.M.
Core Count: 4
Core Enabled: 4
Thread Count: 4
Characteristics:
64-bit capable
Multi-Core
Execute Protection
Enhanced Virtualization
Power/Performance Control
Handle 0x0005, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 24 kB
Maximum Size: 24 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Parity
System Type: Data
Associativity: Other
Handle 0x0006, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Parity
System Type: Instruction
Associativity: 8-way Set-associative
Handle 0x0007, DMI type 7, 19 bytes
Cache Information
Socket Designation: L2 Cache
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 1024 kB
Maximum Size: 1024 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: 16-way Set-associative
Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A2
Internal Connector Type: None
External Reference Designator: USB2.0
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A2
Internal Connector Type: None
External Reference Designator: USB2.0
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2
Internal Connector Type: None
External Reference Designator: USB3.0 Port0
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9D1
Internal Connector Type: None
External Reference Designator: UART to Micro USB
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: CON6A1
Internal Connector Type: None
External Reference Designator: SD Card
External Connector Type: Other
Port Type: Other
Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9B1
Internal Connector Type: None
External Reference Designator: Keyboard
External Connector Type: PS/2
Port Type: Keyboard Port
Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9B1
Internal Connector Type: None
External Reference Designator: Mouse
External Connector Type: PS/2
Port Type: Mouse Port
Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: Microphone
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: Line In
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: Line Out
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J7A1
Internal Connector Type: None
External Reference Designator: Audio Jack
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2
Internal Connector Type: None
External Reference Designator: Network Rj45 Jack
External Connector Type: RJ-45
Port Type: Network Port
Handle 0x0014, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J4J1
Internal Connector Type: None
External Reference Designator: SATA
External Connector Type: SAS/SATA Plug Receptacle
Port Type: Other
Handle 0x0015, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J4E2
Internal Connector Type: SAS/SATA Plug Receptacle
External Reference Designator: SATA Cable
External Connector Type: None
Port Type: Other
Handle 0x0016, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J4A1
Internal Connector Type: None
External Reference Designator: VGA
External Connector Type: DB-15 female
Port Type: Video Port
Handle 0x0017, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A1
Internal Connector Type: None
External Reference Designator: Display Port
External Connector Type: Other
Port Type: Video Port
Handle 0x0018, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3A1
Internal Connector Type: None
External Reference Designator: Display Port
External Connector Type: Other
Port Type: Video Port
Handle 0x0019, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9B4
Internal Connector Type: None
External Reference Designator: Serial Port
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x001A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A1
Internal Connector Type: None
External Reference Designator: HDMI
External Connector Type: Other
Port Type: Other
Handle 0x001B, DMI type 9, 17 bytes
System Slot Information
Designation: J5C1
Type: x4 PCI Express x4
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001C, DMI type 9, 17 bytes
System Slot Information
Designation: J4B3
Type: x1 PCI Express x1
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001D, DMI type 9, 17 bytes
System Slot Information
Designation: J6C1
Type: x1 PCI Express x1
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001E, DMI type 9, 17 bytes
System Slot Information
Designation: J6D1
Type: x1 PCI Express x1
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001F, DMI type 11, 5 bytes
OEM Strings
String 1: PSCP6E-01F03HFR,R19260S8,A
String 2: 2S4F4Jqc4VDx4
String 3: RpdXMN3Vh8lHM
String 4: mDrTgdxCJWs3y
String 5: String5 for Original Equipment Manufacturer
Handle 0x0020, DMI type 12, 5 bytes
System Configuration Options
Option 1: SMI:00B2C202
Option 2: DSN:2046E4C897D4
Option 3: DSN:HMT451S6BFR8A-PB 17560819
Option 4: String4 for Type12 Equipment Manufacturer
Option 5: GSW:1
Option 6: String6 for Type12 Equipment Manufacturer
Handle 0x0021, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 8
en|US|iso8859-1,0
fr|CA|iso8859-1,0
zh|TW|unicode,0
ja|JP|unicode,0
it|IT|iso8859-1,0
es|ES|iso8859-1,0
de|DE|iso8859-1,0
pt|PT|iso8859-1,0
Currently Installed Language: en|US|iso8859-1,0
Handle 0x0022, DMI type 15, 29 bytes
System Event Log
Area Length: 0 bytes
Header Start Offset: 0x0000
Header Length: 8192 bytes
Data Start Offset: 0x2000
Access Method: General-purpose non-volatile data functions
Access Address: 0x0000
Status: Valid, Not Full
Change Token: 0x12345678
Header Format: OEM-specific
Supported Log Type Descriptors: 0
Handle 0x0023, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: No Error
Number Of Devices: 2
Handle 0x0024, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0023
Error Information Handle: No Error
Total Width: 8 bits
Data Width: 8 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MT/s
Manufacturer: Hynix/Hyundai
Serial Number: 17560819
Asset Tag: 9876543210
Part Number: HMT451S6BFR8A-PB
Rank: Unknown
Configured Memory Speed: 1600 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: Unknown
Handle 0x0025, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FFFFFFFF
Range Size: 4 GB
Physical Array Handle: 0x0023
Partition Width: 2
Handle 0x0026, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FFFFFFFF
Range Size: 4 GB
Physical Device Handle: 0x0024
Memory Array Mapped Address Handle: 0x0025
Partition Row Position: Unknown
Interleave Position: 1
Interleaved Data Depth: 1
Handle 0x0027, DMI type 21, 7 bytes
Built-in Pointing Device
Type: Touch Pad
Interface: PS/2
Buttons: 2
Handle 0x0028, DMI type 22, 26 bytes
Portable Battery
Location: I2C2
Manufacturer: Intel SR 1
Manufacture Date: Date
Serial Number: 123456789
Name: SR Real Battery
Chemistry: Lithium Ion
Design Capacity: 0 mWh
Design Voltage: 3750 mV
SBDS Version: CRB Battery 0
Maximum Error: Unknown
OEM-specific Information: 0x00000000
Handle 0x0029, DMI type 26, 24 bytes
Voltage Probe
Description: Voltage Probe Description
Location: <OUT OF SPEC>
Status: <OUT OF SPEC>
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00008000
Nominal Value: 0.000 V
Handle 0x002A, DMI type 27, 15 bytes
Cooling Device
Temperature Probe Handle: 0x002B
Type: Chip Fan
Status: OK
OEM-specific Information: 0x00000000
Nominal Speed: Unknown Or Non-rotating
Description: Cooling Device Description
Handle 0x002B, DMI type 28, 24 bytes
Temperature Probe
Description: Temperature Probe Description
Location: Unknown
Status: Unknown
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00008000
Nominal Value: 0.0 deg C
Handle 0x002C, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected
Handle 0x002D, DMI type 39, 22 bytes
System Power Supply
Location: OEM Define 0
Name: OEM Define 1
Manufacturer: OEM Define 2
Serial Number: OEM Define 3
Asset Tag: OEM Define 4
Model Part Number: OEM Define 5
Revision: OEM Define 6
Max Power Capacity: 75 W
Status: Present, OK
Type: Regulator
Input Voltage Range Switching: Auto-switch
Plugged: No
Hot Replaceable: No
Handle 0x002E, DMI type 41, 11 bytes
Onboard Device
Reference Designation: IGD
Type: Video
Status: Disabled
Type Instance: 1
Bus Address: 0000:00:02.0
Handle 0x002F, DMI type 131, 64 bytes
OEM-specific Type
Header and Data:
83 40 2F 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 76 50 72 6F 00 00 00 00
Handle 0xFEFF, DMI type 127, 4 bytes
End Of Table
+ ---
+ ProblemType: Bug
+ ApportVersion: 2.20.11-0ubuntu27.18
+ Architecture: amd64
+ AudioDevicesInUse:
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: justine 813 F.... pulseaudio
+ CasperMD5CheckResult: skip
+ DistroRelease: Ubuntu 20.04
+ InstallationDate: Installed on 2021-03-29 (156 days ago)
+ InstallationMedia: Xubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
+ Lsusb:
+ Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
+ Bus 001 Device 003: ID 0930:0225 Toshiba Corp. BCM43142A0
+ Bus 001 Device 004: ID 13d3:5652 IMC Networks TOSHIBA Web Camera - HD
+ Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+ MachineType: TOSHIBA SATELLITE C55-C
+ NonfreeKernelModules: wl
+ Package: linux (not installed)
+ ProcEnviron:
+ LANGUAGE=fr_FR
+ TERM=xterm-256color
+ PATH=(custom, no user)
+ LANG=fr_FR.UTF-8
+ SHELL=/bin/bash
+ ProcFB: 0 i915drmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-81-generic
root=UUID=5f061753-6856-40b4-8771-7c1fe0903b06 ro quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 5.4.0-81.91-generic 5.4.128
+ PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
+ RelatedPackageVersions:
+ linux-restricted-modules-5.4.0-81-generic N/A
+ linux-backports-modules-5.4.0-81-generic N/A
+ linux-firmware 1.187.10
+ Tags: focal
+ Uname: Linux 5.4.0-81-generic x86_64
+ UnreportableReason: Ce rapport concerne un paquet qui n'est pas installé.
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: N/A
+ _MarkForUpload: False
+ dmi.bios.date: 09/15/2015
+ dmi.bios.vendor: INSYDE Corp.
+ dmi.bios.version: 5.20
+ dmi.board.name: 06F5
+ dmi.board.vendor: FF50
+ dmi.board.version: Type2 - Board Version
+ dmi.chassis.asset.tag: No Asset Tag
+ dmi.chassis.type: 10
+ dmi.chassis.vendor: OEM Chassis ManuFacturer
+ dmi.chassis.version: OEM Chassis Version
+ dmi.modalias:
dmi:bvnINSYDECorp.:bvr5.20:bd09/15/2015:svnTOSHIBA:pnSATELLITEC55-C:pvrPSCP6E-01F03HFR:rvnFF50:rn06F5:rvrType2-BoardVersion:cvnOEMChassisManuFacturer:ct10:cvrOEMChassisVersion:
+ dmi.product.family: Type1 - Family
+ dmi.product.name: SATELLITE C55-C
+ dmi.product.sku: PSCP6E
+ dmi.product.version: PSCP6E-01F03HFR
+ dmi.sys.vendor: TOSHIBA
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/1932332/+attachment/5522514/+files/AlsaInfo.txt
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1932332
Title:
[TOSHIBA SATELLITE C55-C] Black screen (light screen off) after
closing the pivotal laptop screen
Status in linux package in Ubuntu:
Confirmed
Bug description:
A friend of mine has a TOSHIBA SATELLITE C55-C and I installed xUbuntu
20.04 LTS.
I have a minor problem linked to a major problem :
- Minor problem : it is impossible to adjust the light of the screen.
- Major problem : when closing the laptop screen and opening it again,
the light of the screen stay off and it is impossible to turn it on
again.
Can you help me ?
Detail behaviour without changing anything
-----------------------------------------
I discovered that the keyboard button controls the
`/sys/class/backlight/intel_backlight/brightness` and modifying the
light value with keyboard button or directly by 'echo $INT_VALUE >
/sys/class/backlight/intel_backlight/brightness' do the same thing.
You can change screen light value with the light keyboard buttons, but
it does not change anything. The only thing that change is that if you
set the light to '0', then the screen light is off. And when you put a
value more than '0' then the screen light is full luminosity ('1' is
the same effect as '1000').
Not working solutions
---------------------
I have tried a lot of things hoping for a solving solution :
In `/etc/default/grub`, I have tried without success :
- GRUB_CMDLINE_LINUX='acpi_backlight=vendor'
- GRUB_CMDLINE_LINUX='acpi_backlight=vendor acpi_osi=linux'
- GRUB_CMDLINE_LINUX='acpi_backlight=video'
- GRUB_CMDLINE_LINUX='video.disable_backlight_sysfs_if=1'
- GRUB_CMDLINE_LINUX='video.brightness_switch_enabled=0'
- GRUB_CMDLINE_LINUX='pcie_aspm=force acpi_osi=Linux acpi_backlight=legacy'
I have read :
- https://askubuntu.com/a/1311344
- https://askubuntu.com/questions/1034305/brightness-problem-ubuntu-18-04-lts
- https://bbs.archlinux.org/viewtopic.php?id=195967&p=2
-
https://askubuntu.com/questions/451165/toshiba-satellite-p850-fn-keys-not-working
- https://wiki.archlinux.org/index.php/Backlight
- https://bugzilla.redhat.com/show_bug.cgi?id=1126159
Not acceptable solution : 'acpi=off'
------------------------------------
The only solution I have found "working" is to set
"GRUB_CMDLINE_LINUX='acpi=off'".
That way, when closing the laptop screen : the light goes off. And
when opening the laptop screen : the light goes on (max value).
In this configuration, it is impossible to adjust the screen light by
modifying /sys/class/backlight/intel_backlight/brightness.
For example : 'echo 0 >
/sys/class/backlight/intel_backlight/brightness' let the screen light
on.
I thought it was an acceptable behaviour, until I saw a major problem.
The computer is slower than before, because only 1 CPU (instead of 4)
is detected.
So I can't stay with that configuration.
Computer specifications
-----------------------
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.
49 structures occupying 2491 bytes.
Table at 0x000E6EE0.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: INSYDE Corp.
Version: 5.20
Release Date: 09/15/2015
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 3072 kB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
EDD is supported
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
ATAPI Zip drive boot is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
BIOS Revision: 5.20
Firmware Revision: 5.0
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: TOSHIBA
Product Name: SATELLITE C55-C
Version: PSCP6E-01F03HFR
Serial Number: YF176764C
UUID: 0a28c286-2265-8c43-896c-6b968f92ea27
Wake-up Type: Power Switch
SKU Number: PSCP6E
Family: Type1 - Family
Handle 0x0002, DMI type 2, 17 bytes
Base Board Information
Manufacturer: FF50
Product Name: 06F5
Version: Type2 - Board Version
Serial Number: QC020RBF4601368
Asset Tag:
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Type2 - Board Chassis Location
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0
Handle 0x0003, DMI type 3, 25 bytes
Chassis Information
Manufacturer: OEM Chassis ManuFacturer
Type: Notebook
Lock: Not Present
Version: OEM Chassis Version
Serial Number: OEM Chassis Serial Number
Asset Tag: No Asset Tag
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00000000
Height: Unspecified
Number Of Power Cords: 1
Contained Elements: 0
SKU Number: SKU Number
Handle 0x0004, DMI type 4, 42 bytes
Processor Information
Socket Designation: CHV
Type: Central Processor
Family: Pentium
Manufacturer: Intel(R) Corporation
ID: C3 06 04 00 FF FB EB BF
Signature: Type 0, Family 6, Model 76, Stepping 3
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Pentium(R) CPU N3700 @ 1.60GHz
Voltage: 4.0 V
External Clock: 83 MHz
Max Speed: 1660 MHz
Current Speed: 1600 MHz
Status: Populated, Enabled
Upgrade: Slot 1
L1 Cache Handle: 0x0006
L2 Cache Handle: 0x0007
L3 Cache Handle: Not Provided
Serial Number: To Be Filled By O.E.M.
Asset Tag: To Be Filled By O.E.M.
Part Number: To Be Filled By O.E.M.
Core Count: 4
Core Enabled: 4
Thread Count: 4
Characteristics:
64-bit capable
Multi-Core
Execute Protection
Enhanced Virtualization
Power/Performance Control
Handle 0x0005, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 24 kB
Maximum Size: 24 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Parity
System Type: Data
Associativity: Other
Handle 0x0006, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Parity
System Type: Instruction
Associativity: 8-way Set-associative
Handle 0x0007, DMI type 7, 19 bytes
Cache Information
Socket Designation: L2 Cache
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 1024 kB
Maximum Size: 1024 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: 16-way Set-associative
Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A2
Internal Connector Type: None
External Reference Designator: USB2.0
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A2
Internal Connector Type: None
External Reference Designator: USB2.0
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2
Internal Connector Type: None
External Reference Designator: USB3.0 Port0
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9D1
Internal Connector Type: None
External Reference Designator: UART to Micro USB
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: CON6A1
Internal Connector Type: None
External Reference Designator: SD Card
External Connector Type: Other
Port Type: Other
Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9B1
Internal Connector Type: None
External Reference Designator: Keyboard
External Connector Type: PS/2
Port Type: Keyboard Port
Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9B1
Internal Connector Type: None
External Reference Designator: Mouse
External Connector Type: PS/2
Port Type: Mouse Port
Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: Microphone
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: Line In
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: Line Out
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J7A1
Internal Connector Type: None
External Reference Designator: Audio Jack
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2
Internal Connector Type: None
External Reference Designator: Network Rj45 Jack
External Connector Type: RJ-45
Port Type: Network Port
Handle 0x0014, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J4J1
Internal Connector Type: None
External Reference Designator: SATA
External Connector Type: SAS/SATA Plug Receptacle
Port Type: Other
Handle 0x0015, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J4E2
Internal Connector Type: SAS/SATA Plug Receptacle
External Reference Designator: SATA Cable
External Connector Type: None
Port Type: Other
Handle 0x0016, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J4A1
Internal Connector Type: None
External Reference Designator: VGA
External Connector Type: DB-15 female
Port Type: Video Port
Handle 0x0017, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A1
Internal Connector Type: None
External Reference Designator: Display Port
External Connector Type: Other
Port Type: Video Port
Handle 0x0018, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3A1
Internal Connector Type: None
External Reference Designator: Display Port
External Connector Type: Other
Port Type: Video Port
Handle 0x0019, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9B4
Internal Connector Type: None
External Reference Designator: Serial Port
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x001A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A1
Internal Connector Type: None
External Reference Designator: HDMI
External Connector Type: Other
Port Type: Other
Handle 0x001B, DMI type 9, 17 bytes
System Slot Information
Designation: J5C1
Type: x4 PCI Express x4
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001C, DMI type 9, 17 bytes
System Slot Information
Designation: J4B3
Type: x1 PCI Express x1
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001D, DMI type 9, 17 bytes
System Slot Information
Designation: J6C1
Type: x1 PCI Express x1
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001E, DMI type 9, 17 bytes
System Slot Information
Designation: J6D1
Type: x1 PCI Express x1
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
SMBus signal is supported
Bus Address: 0000:00:00.0
Handle 0x001F, DMI type 11, 5 bytes
OEM Strings
String 1: PSCP6E-01F03HFR,R19260S8,A
String 2: 2S4F4Jqc4VDx4
String 3: RpdXMN3Vh8lHM
String 4: mDrTgdxCJWs3y
String 5: String5 for Original Equipment Manufacturer
Handle 0x0020, DMI type 12, 5 bytes
System Configuration Options
Option 1: SMI:00B2C202
Option 2: DSN:2046E4C897D4
Option 3: DSN:HMT451S6BFR8A-PB 17560819
Option 4: String4 for Type12 Equipment Manufacturer
Option 5: GSW:1
Option 6: String6 for Type12 Equipment Manufacturer
Handle 0x0021, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 8
en|US|iso8859-1,0
fr|CA|iso8859-1,0
zh|TW|unicode,0
ja|JP|unicode,0
it|IT|iso8859-1,0
es|ES|iso8859-1,0
de|DE|iso8859-1,0
pt|PT|iso8859-1,0
Currently Installed Language: en|US|iso8859-1,0
Handle 0x0022, DMI type 15, 29 bytes
System Event Log
Area Length: 0 bytes
Header Start Offset: 0x0000
Header Length: 8192 bytes
Data Start Offset: 0x2000
Access Method: General-purpose non-volatile data functions
Access Address: 0x0000
Status: Valid, Not Full
Change Token: 0x12345678
Header Format: OEM-specific
Supported Log Type Descriptors: 0
Handle 0x0023, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: No Error
Number Of Devices: 2
Handle 0x0024, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0023
Error Information Handle: No Error
Total Width: 8 bits
Data Width: 8 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MT/s
Manufacturer: Hynix/Hyundai
Serial Number: 17560819
Asset Tag: 9876543210
Part Number: HMT451S6BFR8A-PB
Rank: Unknown
Configured Memory Speed: 1600 MT/s
Minimum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Configured Voltage: Unknown
Handle 0x0025, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FFFFFFFF
Range Size: 4 GB
Physical Array Handle: 0x0023
Partition Width: 2
Handle 0x0026, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FFFFFFFF
Range Size: 4 GB
Physical Device Handle: 0x0024
Memory Array Mapped Address Handle: 0x0025
Partition Row Position: Unknown
Interleave Position: 1
Interleaved Data Depth: 1
Handle 0x0027, DMI type 21, 7 bytes
Built-in Pointing Device
Type: Touch Pad
Interface: PS/2
Buttons: 2
Handle 0x0028, DMI type 22, 26 bytes
Portable Battery
Location: I2C2
Manufacturer: Intel SR 1
Manufacture Date: Date
Serial Number: 123456789
Name: SR Real Battery
Chemistry: Lithium Ion
Design Capacity: 0 mWh
Design Voltage: 3750 mV
SBDS Version: CRB Battery 0
Maximum Error: Unknown
OEM-specific Information: 0x00000000
Handle 0x0029, DMI type 26, 24 bytes
Voltage Probe
Description: Voltage Probe Description
Location: <OUT OF SPEC>
Status: <OUT OF SPEC>
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00008000
Nominal Value: 0.000 V
Handle 0x002A, DMI type 27, 15 bytes
Cooling Device
Temperature Probe Handle: 0x002B
Type: Chip Fan
Status: OK
OEM-specific Information: 0x00000000
Nominal Speed: Unknown Or Non-rotating
Description: Cooling Device Description
Handle 0x002B, DMI type 28, 24 bytes
Temperature Probe
Description: Temperature Probe Description
Location: Unknown
Status: Unknown
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00008000
Nominal Value: 0.0 deg C
Handle 0x002C, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected
Handle 0x002D, DMI type 39, 22 bytes
System Power Supply
Location: OEM Define 0
Name: OEM Define 1
Manufacturer: OEM Define 2
Serial Number: OEM Define 3
Asset Tag: OEM Define 4
Model Part Number: OEM Define 5
Revision: OEM Define 6
Max Power Capacity: 75 W
Status: Present, OK
Type: Regulator
Input Voltage Range Switching: Auto-switch
Plugged: No
Hot Replaceable: No
Handle 0x002E, DMI type 41, 11 bytes
Onboard Device
Reference Designation: IGD
Type: Video
Status: Disabled
Type Instance: 1
Bus Address: 0000:00:02.0
Handle 0x002F, DMI type 131, 64 bytes
OEM-specific Type
Header and Data:
83 40 2F 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 76 50 72 6F 00 00 00 00
Handle 0xFEFF, DMI type 127, 4 bytes
End Of Table
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: justine 813 F.... pulseaudio
CasperMD5CheckResult: skip
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2021-03-29 (156 days ago)
InstallationMedia: Xubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0930:0225 Toshiba Corp. BCM43142A0
Bus 001 Device 004: ID 13d3:5652 IMC Networks TOSHIBA Web Camera - HD
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: TOSHIBA SATELLITE C55-C
NonfreeKernelModules: wl
Package: linux (not installed)
ProcEnviron:
LANGUAGE=fr_FR
TERM=xterm-256color
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-81-generic
root=UUID=5f061753-6856-40b4-8771-7c1fe0903b06 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.4.0-81.91-generic 5.4.128
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.4.0-81-generic N/A
linux-backports-modules-5.4.0-81-generic N/A
linux-firmware 1.187.10
Tags: focal
Uname: Linux 5.4.0-81-generic x86_64
UnreportableReason: Ce rapport concerne un paquet qui n'est pas installé.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: N/A
_MarkForUpload: False
dmi.bios.date: 09/15/2015
dmi.bios.vendor: INSYDE Corp.
dmi.bios.version: 5.20
dmi.board.name: 06F5
dmi.board.vendor: FF50
dmi.board.version: Type2 - Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis ManuFacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias:
dmi:bvnINSYDECorp.:bvr5.20:bd09/15/2015:svnTOSHIBA:pnSATELLITEC55-C:pvrPSCP6E-01F03HFR:rvnFF50:rn06F5:rvrType2-BoardVersion:cvnOEMChassisManuFacturer:ct10:cvrOEMChassisVersion:
dmi.product.family: Type1 - Family
dmi.product.name: SATELLITE C55-C
dmi.product.sku: PSCP6E
dmi.product.version: PSCP6E-01F03HFR
dmi.sys.vendor: TOSHIBA
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