Changing status to 'Confirmed' as requested in comment #3.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1965605
Title:
HUAWEI matebook x pro 2022 led screen backlight do not work with
ubuntu 20.x also 21.10
Status in linux package in Ubuntu:
Confirmed
Bug description:
linux-modules-5.13.0-37-generic
also recent kernel such as 5.16.x
LCD backlight control key do not work,dmesg report a lot of ACPI
error, I have no idea if these errors related with this problem.
Here is the dmesg logs :
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gpmn 4421 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: KDE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2022-03-19 (0 days ago)
InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
MachineType: HUAWEI MRG-WXX
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-37-generic
root=UUID=63fdfb74-7fb4-47e8-ada6-2f605a114c46 ro quiet splash nomodeset
vt.handoff=7
ProcVersionSignature: Ubuntu 5.13.0-37.42~20.04.1-generic 5.13.19
RelatedPackageVersions:
linux-restricted-modules-5.13.0-37-generic N/A
linux-backports-modules-5.13.0-37-generic N/A
linux-firmware 1.187.29
Tags: focal
Uname: Linux 5.13.0-37-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 1/19/2022
dmi.bios.release: 2.18
dmi.bios.vendor: HUAWEI
dmi.bios.version: 2.18
dmi.board.asset.tag: N/A
dmi.board.name: MRG-WXX-PCB-B1
dmi.board.vendor: HUAWEI
dmi.board.version: M1010
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: HUAWEI
dmi.chassis.version: M1010
dmi.ec.firmware.release: 2.18
dmi.modalias:
dmi:bvnHUAWEI:bvr2.18:bd1/19/2022:br2.18:efr2.18:svnHUAWEI:pnMRG-WXX:pvrM1010:rvnHUAWEI:rnMRG-WXX-PCB-B1:rvrM1010:cvnHUAWEI:ct10:cvrM1010:skuC233:
dmi.product.family: MateBook X
dmi.product.name: MRG-WXX
dmi.product.sku: C233
dmi.product.version: M1010
dmi.sys.vendor: HUAWEI
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