You have been subscribed to a public bug:
I am running a Dell XPS 15. Updating to 20.04 means that the keyboard
bindings for changing the brightness and keypad backlighting don't work.
The icons appear on the screen, but the brightness does not change.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
Uname: Linux 5.4.0-12-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu16
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 12 09:23:22 2020
DistUpgraded: 2020-02-08 14:25:17,407 DEBUG Running PostInstallScript:
'./xorg_fix_proprietary.py'
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 6.1.2, 5.3.0-29-generic, x86_64: installed
virtualbox, 6.1.2, 5.4.0-12-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation UHD Graphics 630 (Mobile) [8086:3e9b] (prog-if 00 [VGA
controller])
Subsystem: Dell UHD Graphics 630 (Mobile) [1028:087c]
Subsystem: Dell GP107M [GeForce GTX 1050 Ti Mobile] [1028:087c]
InstallationDate: Installed on 2018-11-21 (447 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
MachineType: Dell Inc. XPS 15 9570
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-12-generic
root=UUID=78400725-c498-408a-af83-69891ddf09e4 ro quiet splash
nouveau.modeset=0 acpi_osi=Linux vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to focal on 2020-02-08 (3 days ago)
dmi.bios.date: 11/08/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.14.0
dmi.board.name: 0D0T05
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.14.0:bd11/08/2019:svnDellInc.:pnXPS159570:pvr:rvnDellInc.:rn0D0T05:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 15 9570
dmi.product.sku: 087C
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.100+git2002011830.5c8ff5~oibaf~d
version.libgl1-mesa-dri: libgl1-mesa-dri 20.1~git2002030730.a4e627~oibaf~d
version.libgl1-mesa-glx: libgl1-mesa-glx 20.1~git2002030730.a4e627~oibaf~d
version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20190815-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal regression single-occurrence
third-party-packages ubuntu
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Unable to change laptop screen brightness or keyboard backlighting
https://bugs.launchpad.net/bugs/1862835
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