Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1728214
Title:
Cannot adjust screen brightness after upgrading from 17.04 to 17.10
Status in xorg package in Ubuntu:
Confirmed
Bug description:
References:
https://help.ubuntu.com/stable/ubuntu-help/display-brightness.html
The screen is unusably bright and I cannot adjust its brightness by
any of the following methods:
"To change the brightness of your screen, click the system menu on the
right side of the top bar and adjust the screen brightness slider to
the value you want to use. The change should take effect immediately".
"You can also adjust the screen brightness by using the Power panel".
Prior to upgrade, the brightness controller app worked
(https://github.com/LordAmit/Brightness).
After the upgrade, it does not.
Related posts are on Ubuntu stack exchange etc:
https://askubuntu.com/questions/966557/how-do-we-turn-down-the-insane-
brightness-on-ubuntu-17-10
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: xorg 1:7.7+19ubuntu3
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
.tmp.unity_support_test.0:
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 28 18:36:39 2017
DistUpgraded: 2017-10-22 07:25:03,053 DEBUG Running PostInstallScript:
'./xorg_fix_proprietary.py'
DistroCodename: artful
DistroVariant: ubuntu
ExtraDebuggingInterest: No
GraphicsCard:
Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA
controller])
Subsystem: Intel Corporation HD Graphics 520 [8086:2063]
InstallationDate: Installed on 2016-03-22 (585 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2b Intel Corp.
Bus 001 Device 002: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for
Bluetooth
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic.efi.signed
root=UUID=306db387-b854-4d8f-8382-9727ad6ce642 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to artful on 2017-10-21 (6 days ago)
dmi.bios.vendor: Intel Corp.
dmi.board.vendor: Intel corporation
version.compiz: compiz 1:0.9.13.1+17.10.20170901-0ubuntu1
version.libdrm2: libdrm2 2.4.83-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.2-0ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20170309-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Sat Oct 21 20:19:52 2017
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.3-1ubuntu1.3
xserver.video_driver: modeset
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