You have been subscribed to a public bug:
I walk away from the machine; come back hours later to find that the
screen is dim. The following command confirms that the cause is
something in Ubuntu
xrandr --listmonitors --verbose | egrep -3 -i 'gamma|backl|brightn'
Has shown value for "Brightness" of 0.11, 0.18, 0.0018, 0.20, and
possibly other values. (Gamma is all 1.0.) This occurs on both
monitors that I have hooked up, but the values are usually different. I
like a Brightness of 0.80, I know how to manually change with xrandr or
a brightness-controller app. When the brightness is too low it is very
hard to fix things without rebooting.
I am currently running 21.10, but I have had mysterious crashes in older
versions of Ubuntu; I now wonder if the was going all the way to zero in
some of those crashes.
ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: xorg 1:7.7+22ubuntu2
ProcVersionSignature: Ubuntu 5.13.0-28.31-generic 5.13.19
Uname: Linux 5.13.0-28-generic x86_64
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CompositorRunning: None
CurrentDesktop: MATE
Date: Thu Feb 10 15:32:43 2022
DistUpgraded: 2022-02-03 15:56:57,188 DEBUG Running PostInstallScript:
'/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
DistroCodename: impish
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation CoffeeLake-H GT2 [UHD Graphics 630] [8086:3e9b] (rev 02)
(prog-if 00 [VGA controller])
Subsystem: Intel Corporation CoffeeLake-H GT2 [UHD Graphics 630] [8086:2088]
InstallationDate: Installed on 2021-01-25 (381 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
MachineType: Intel(R) Client Systems NUC9V7QNX
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.13.0-28-generic
root=UUID=7374319a-8421-4977-a836-6882e295d7ca ro quiet splash
crashkernel=512M-:192M vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to impish on 2022-02-03 (6 days ago)
dmi.bios.date: 11/30/2020
dmi.bios.release: 5.13
dmi.bios.vendor: Intel Corp.
dmi.bios.version: QNCFLX70.0059.2020.1130.2122
dmi.board.name: NUC9V7QNB
dmi.board.vendor: Intel Corporation
dmi.board.version: K47180-402
dmi.chassis.type: 35
dmi.chassis.vendor: Intel Corporation
dmi.chassis.version: 2.0
dmi.ec.firmware.release: 24.39
dmi.modalias:
dmi:bvnIntelCorp.:bvrQNCFLX70.0059.2020.1130.2122:bd11/30/2020:br5.13:efr24.39:svnIntel(R)ClientSystems:pnNUC9V7QNX:pvrK47174-402:rvnIntelCorporation:rnNUC9V7QNB:rvrK47180-402:cvnIntelCorporation:ct35:cvr2.0:skuBKNUC9V7QNX:
dmi.product.family: QN
dmi.product.name: NUC9V7QNX
dmi.product.sku: BKNUC9V7QNX
dmi.product.version: K47174-402
dmi.sys.vendor: Intel(R) Client Systems
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.107-8ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 21.2.2-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2build1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200714-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1build1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug impish possible-manual-nvidia-install ubuntu
--
Screen goes dim
https://bugs.launchpad.net/bugs/1960569
You received this bug notification because you are a member of Ubuntu Touch
seeded packages, which is subscribed to xorg in Ubuntu.
--
Mailing list: https://launchpad.net/~touch-packages
Post to : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
