** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Description changed:
- Hi,
-
On my Toshiba L735-101, screen brightness keys do not allow screen
brightness to be set. Actual brightness is always maximum (i.e. much too
bright...).
If I boot "normally" , screen brightness keys have no effect at all.
If I boot adding the "acpi_backlight=vendor" option, then the brighness
hotkeys cause the corresponding pop-up level bar to display (modulo bug
#971734), still there is no change on actual screen brightness.
Video board is :
[ 74.130] (II) NVIDIA(0): NVIDIA GPU GeForce 315M (GT218) at
PCI:1:0:0 (GPU-0)
Boot dmesg shows some funny stuff :
[ 3.346332] [Firmware Bug]: ACPI(VGA) defines _DOD but not _DOS
Putting in /etc/X11/xorg.conf :
Option "RegistryDwords" "EnableBrightnessControl=1"
...doesn't help
# ll /sys/class/backlight/toshiba/
total 0
drwxr-xr-x 3 root root 0 avril 2 19:20 ./
drwxr-xr-x 3 root root 0 avril 2 19:20 ../
-r--r--r-- 1 root root 4096 avril 2 19:47 actual_brightness
-rw-r--r-- 1 root root 4096 avril 2 19:47 bl_power
-rw-r--r-- 1 root root 4096 avril 2 19:23 brightness
lrwxrwxrwx 1 root root 0 avril 2 19:47 device -> ../../../TOS1900:00/
-r--r--r-- 1 root root 4096 avril 2 19:23 max_brightness
drwxr-xr-x 2 root root 0 avril 2 19:47 power/
lrwxrwxrwx 1 root root 0 avril 2 19:20 subsystem ->
../../../../../../class/backlight/
-r--r--r-- 1 root root 4096 avril 2 19:23 type
-rw-r--r-- 1 root root 4096 avril 2 19:20 uevent
=> Using the brightness hotkeys cause the value of "brightness" to
change here (only if booted with "acpi_backlight=vendor"), but the value
of "actual_brightness" doesn't change (nor the screen actual
brigthness...)
TIA for any help.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-21-generic 3.2.0-21.34
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0-0ubuntu2
Architecture: i386
CheckboxSubmission: 1ea6109db29b53f721a523a77b7f3abf
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Mon Apr 2 19:39:09 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=0e7ded16-c4fc-4f81-8562-3cb1196809d3
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: TOSHIBA SATELLITE L735
ProcEnviron:
LANGUAGE=fr_FR:fr:en_US:en
TERM=xterm
PATH=(custom, user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-21-generic
root=/dev/mapper/VG1-UBUNTU ro rdblacklist=nouveau nouveau.blacklist=1
acpi_backlight=vendor clocksource=hpet rdblacklist=nouveau nouveau.blacklist=1
acpi_backlight=vendor quiet splash vt.handoff=7
SourcePackage: linux
StagingDrivers: rts5139 mei
UpgradeStatus: Upgraded to precise on 2012-03-10 (23 days ago)
dmi.bios.date: 02/10/2012
dmi.bios.vendor: INSYDE
dmi.bios.version: 2.20
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Intel Corp.
dmi.board.version: Base 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:bvnINSYDE:bvr2.20:bd02/10/2012:svnTOSHIBA:pnSATELLITEL735:pvrPSK0CE-00900LFR:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: SATELLITE L735
dmi.product.version: PSK0CE-00900LFR
dmi.sys.vendor: TOSHIBA
---
ApportVersion: 2.5.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: michel 3640 F.... pulseaudio
/dev/snd/controlC0: michel 3640 F.... pulseaudio
CRDA:
country FR:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (N/A, 20)
(5250 - 5330 @ 40), (N/A, 20), DFS
(5490 - 5710 @ 40), (N/A, 27), DFS
CheckboxSubmission: 1ea6109db29b53f721a523a77b7f3abf
CheckboxSystem: d00f84de8a555815fa1c4660280da308
DistroRelease: Ubuntu 12.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=b49c11a6-09a7-4da7-9efa-500df0c9d257
MachineType: TOSHIBA SATELLITE L735
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/UBUNTU/@boot/vmlinuz-3.5.0-12-generic
root=/dev/mapper/VG1-BTR_POOL ro rootflags=subvol=UBUNTU/@ rdblacklist=nouveau
nouveau.blacklist=1 acpi_osi=Linux acpi_backlight=vendor quiet splash
vt.handoff=7
ProcVersionSignature: Ubuntu 3.5.0-12.12-generic 3.5.2
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory
/home/michel not ours.
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.5.0-12-generic N/A
linux-backports-modules-3.5.0-12-generic N/A
linux-firmware 1.90
StagingDrivers: rts5139
Tags: quantal staging
Uname: Linux 3.5.0-12-generic x86_64
UpgradeStatus: Upgraded to quantal on 2012-08-28 (0 days ago)
UserGroups:
dmi.bios.date: 06/26/2012
dmi.bios.vendor: INSYDE
dmi.bios.version: 2.50
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Intel Corp.
dmi.board.version: Base 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:bvnINSYDE:bvr2.50:bd06/26/2012:svnTOSHIBA:pnSATELLITEL735:pvrPSK0CE-00900LFR:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: SATELLITE L735
dmi.product.version: PSK0CE-00900LFR
dmi.sys.vendor: TOSHIBA~
** Description changed:
- On my Toshiba L735-101, screen brightness keys do not allow screen
- brightness to be set. Actual brightness is always maximum (i.e. much too
- bright...).
+ On my Toshiba L735-101, using btrfs, screen brightness keys do not allow
+ screen brightness to be set. Actual brightness is always maximum (i.e.
+ much too bright...).
If I boot "normally" , screen brightness keys have no effect at all.
If I boot adding the "acpi_backlight=vendor" option, then the brighness
hotkeys cause the corresponding pop-up level bar to display (modulo bug
#971734), still there is no change on actual screen brightness.
Video board is :
-
- [ 74.130] (II) NVIDIA(0): NVIDIA GPU GeForce 315M (GT218) at
- PCI:1:0:0 (GPU-0)
+ [ 74.130] (II) NVIDIA(0): NVIDIA GPU GeForce 315M (GT218) at PCI:1:0:0
(GPU-0)
Boot dmesg shows some funny stuff :
-
[ 3.346332] [Firmware Bug]: ACPI(VGA) defines _DOD but not _DOS
- Putting in /etc/X11/xorg.conf :
+ Putting the following in /etc/X11/xorg.conf does not help:
Option "RegistryDwords" "EnableBrightnessControl=1"
- ...doesn't help
# ll /sys/class/backlight/toshiba/
total 0
drwxr-xr-x 3 root root 0 avril 2 19:20 ./
drwxr-xr-x 3 root root 0 avril 2 19:20 ../
-r--r--r-- 1 root root 4096 avril 2 19:47 actual_brightness
-rw-r--r-- 1 root root 4096 avril 2 19:47 bl_power
-rw-r--r-- 1 root root 4096 avril 2 19:23 brightness
lrwxrwxrwx 1 root root 0 avril 2 19:47 device -> ../../../TOS1900:00/
-r--r--r-- 1 root root 4096 avril 2 19:23 max_brightness
drwxr-xr-x 2 root root 0 avril 2 19:47 power/
lrwxrwxrwx 1 root root 0 avril 2 19:20 subsystem ->
../../../../../../class/backlight/
-r--r--r-- 1 root root 4096 avril 2 19:23 type
-rw-r--r-- 1 root root 4096 avril 2 19:20 uevent
=> Using the brightness hotkeys cause the value of "brightness" to
change here (only if booted with "acpi_backlight=vendor"), but the value
of "actual_brightness" doesn't change (nor the screen actual
brigthness...)
-
- TIA for any help.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-21-generic 3.2.0-21.34
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0-0ubuntu2
Architecture: i386
CheckboxSubmission: 1ea6109db29b53f721a523a77b7f3abf
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Mon Apr 2 19:39:09 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=0e7ded16-c4fc-4f81-8562-3cb1196809d3
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: TOSHIBA SATELLITE L735
ProcEnviron:
LANGUAGE=fr_FR:fr:en_US:en
TERM=xterm
PATH=(custom, user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-21-generic
root=/dev/mapper/VG1-UBUNTU ro rdblacklist=nouveau nouveau.blacklist=1
acpi_backlight=vendor clocksource=hpet rdblacklist=nouveau nouveau.blacklist=1
acpi_backlight=vendor quiet splash vt.handoff=7
SourcePackage: linux
StagingDrivers: rts5139 mei
UpgradeStatus: Upgraded to precise on 2012-03-10 (23 days ago)
dmi.bios.date: 02/10/2012
dmi.bios.vendor: INSYDE
dmi.bios.version: 2.20
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Intel Corp.
dmi.board.version: Base 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:bvnINSYDE:bvr2.20:bd02/10/2012:svnTOSHIBA:pnSATELLITEL735:pvrPSK0CE-00900LFR:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: SATELLITE L735
dmi.product.version: PSK0CE-00900LFR
dmi.sys.vendor: TOSHIBA
---
ApportVersion: 2.5.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: michel 3640 F.... pulseaudio
/dev/snd/controlC0: michel 3640 F.... pulseaudio
CRDA:
country FR:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (N/A, 20)
(5250 - 5330 @ 40), (N/A, 20), DFS
(5490 - 5710 @ 40), (N/A, 27), DFS
CheckboxSubmission: 1ea6109db29b53f721a523a77b7f3abf
CheckboxSystem: d00f84de8a555815fa1c4660280da308
DistroRelease: Ubuntu 12.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=b49c11a6-09a7-4da7-9efa-500df0c9d257
MachineType: TOSHIBA SATELLITE L735
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/UBUNTU/@boot/vmlinuz-3.5.0-12-generic
root=/dev/mapper/VG1-BTR_POOL ro rootflags=subvol=UBUNTU/@ rdblacklist=nouveau
nouveau.blacklist=1 acpi_osi=Linux acpi_backlight=vendor quiet splash
vt.handoff=7
ProcVersionSignature: Ubuntu 3.5.0-12.12-generic 3.5.2
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory
/home/michel not ours.
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.5.0-12-generic N/A
linux-backports-modules-3.5.0-12-generic N/A
linux-firmware 1.90
StagingDrivers: rts5139
Tags: quantal staging
Uname: Linux 3.5.0-12-generic x86_64
UpgradeStatus: Upgraded to quantal on 2012-08-28 (0 days ago)
UserGroups:
dmi.bios.date: 06/26/2012
dmi.bios.vendor: INSYDE
dmi.bios.version: 2.50
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Intel Corp.
dmi.board.version: Base 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:bvnINSYDE:bvr2.50:bd06/26/2012:svnTOSHIBA:pnSATELLITEL735:pvrPSK0CE-00900LFR:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: SATELLITE L735
dmi.product.version: PSK0CE-00900LFR
dmi.sys.vendor: TOSHIBA~
--
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https://bugs.launchpad.net/bugs/971750
Title:
[Toshiba L735-101] screen brightness cannot be set using hotkeys
To manage notifications about this bug go to:
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