This might be related to https://gitlab.freedesktop.org/drm/intel/-/issues/3569
HP ProBook 450 G6, HP ProbBok 450 G7, HP EliteBook 850 G5, HP OMEN 15
(dc-0019ur)
HP ProBook 450 G6 shows:
sudo lspci -kv
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (Whiskey
Lake) (rev 02)
(prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Hewlett-Packard Company UHD Graphics 620 (Whiskey Lake)
Flags: bus master, fast devsel, latency 0, IRQ 145
Memory at f0000000 (64-bit, non-prefetchable) [size=16M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [100] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [300] Page Request Interface (PRI)
Kernel driver in use: i915
Kernel modules: i915
edid-decode /sys/class/drm/card0-eDP-1/edid
edid-decode (hex):
00 ff ff ff ff ff ff 00 30 e4 2e 06 00 00 00 00
00 1d 01 04 95 22 13 78 03 38 d5 97 5e 59 8e 27
1c 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 24 36 80 a0 70 38 1f 40 30 20
35 00 58 c2 10 00 00 19 18 24 80 a0 70 38 1f 40
30 20 35 00 58 c2 10 00 00 19 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02
00 0c 3a ff 0a 3c 7d 13 14 26 7d 00 00 00 00 2f
----------------
EDID version: 1.4
Manufacturer: LGD Model 1582 Serial Number 0
Made in year 2019
Digital display
6 bits per primary color channel
DisplayPort interface
Maximum image size: 34 cm x 19 cm
Gamma: 2.20
Supported color formats: RGB 4:4:4
First detailed timing includes the native pixel format and preferred refresh
rate
Display is continuous frequency
Color Characteristics
Red: 0.5898, 0.3701
Green: 0.3496, 0.5546
Blue: 0.1552, 0.1103
White: 0.3134, 0.3291
Established Timings I & II: none
Standard Timings: none
Detailed mode: Clock 138.600 MHz, 344 mm x 194 mm
1920 1968 2000 2080 ( 48 32 80)
1080 1083 1088 1111 ( 3 5 23)
-hsync -vsync
VertFreq: 59.977 Hz, HorFreq: 66.635 kHz
Detailed mode: Clock 92.400 MHz, 344 mm x 194 mm
1920 1968 2000 2080 ( 48 32 80)
1080 1083 1088 1111 ( 3 5 23)
-hsync -vsync
VertFreq: 39.985 Hz, HorFreq: 44.423 kHz
Empty Descriptor
Manufacturer-Specified Display Descriptor (0x02): 00 02 00 0c 3a ff 0a 3c 7d 13
14 26 7d 00 00 00 ....:..<}..&}...
Checksum: 0x2f
** Bug watch added: gitlab.freedesktop.org/drm/intel/-/issues #3569
https://gitlab.freedesktop.org/drm/intel/-/issues/3569
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-signed-hwe-5.11 in Ubuntu.
https://bugs.launchpad.net/bugs/1939160
Title:
[HP Probook 450 G6] Laptop Monitor Turns off During Startup, but older
kernel versions work (updated system log)
Status in linux-signed-hwe-5.11 package in Ubuntu:
Confirmed
Status in linux-signed-hwe-5.8 package in Ubuntu:
Confirmed
Bug description:
I had previously submitted this bug here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1937914 , but I
submitted a system log from an older, working version of Ubuntu rather
than from the failing version. This report has the updated log.
While starting the my laptop
(Computer Model: HP Probook 450 G6
ProdID 5YH15UT#ABA
Memory: 15.5 GB
Processor: Intel Core i7-8565U CPU @ 1.80GHz x 8
Graphics: NV118 / Mesa Intel UHD Graphics 620 (WHL GT2)
Disk Capacity: 256.1 GB)
which runs
(OS Name: Ubuntu 20.04.2 LTS
OS Type: 64-bit
GNOME Version: 3.36.8
Windowing System: X11)
the monitor turns off as soon as Ubuntu loads. The OS loads as normal
and my external monitor still works, but my laptop monitor does not. I
was able to fix the problem by pressing ESC as soon as the HP logo
appears during start-up, then selecting "Advanced Ubuntu Options",
then choosing an older version of Ubuntu (currently that's
...5.4.0-48..., while I believe the latest version is ...5.8.0-66...).
It seems clear that this problem is caused by a bug that was
introduced in one of the more recent updates (...5.8.0-59..., maybe?).
I am not at all sure that the problem is in xorg; the package
identification webpage just suggested that, if the monitor is blank
when I would expect to see the Ubuntu logo during startup, then I
should say that the relevant package is xorg.
I am more than happy to run additional diagnostics that you would
recommend if that would help you diagnose and fix the problem.
Thank you.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.11.0-25-generic 5.11.0-25.27~20.04.1
ProcVersionSignature: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 6 10:34:40 2021
InstallationDate: Installed on 2021-07-06 (30 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: linux-signed-hwe-5.11
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.11/+bug/1939160/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
