HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu 20.x also 21.10

[曲水流觞]

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 :
---
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

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 1965605

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1965605

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[曲水流觞 (gpmnlxdw)]

apport information

[曲水流觞 (gpmnlxdw)]

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[曲水流觞 (gpmnlxdw)]

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[曲水流觞 (gpmnlxdw)]

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[曲水流觞 (gpmnlxdw)]

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[曲水流觞 (gpmnlxdw)]

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[Paul White (paulw2u)]

Changing status to 'Confirmed' as requested in comment #3.

[曲水流觞 (gpmnlxdw)]

Did the dmesg's output releate with the LCD backlight problem?

Btw, my laptop's /sys/class/backlight/ directory is empty.

And there's no "intel_backlight" with this command: sudo find /sys/ -type f -iname '*brightness*'

/sys/devices/platform/huawei-wmi/leds/platform::micmute/brightness
/sys/devices/platform/huawei-wmi/leds/platform::micmute/max_brightness
/sys/devices/platform/i8042/serio0/input/input2/input2::numlock/brightness
/sys/devices/platform/i8042/serio0/input/input2/input2::numlock/max_brightness
/sys/devices/platform/i8042/serio0/input/input2/input2::capslock/brightness
/sys/devices/platform/i8042/serio0/input/input2/input2::capslock/max_brightness
/sys/devices/platform/i8042/serio0/input/input2/input2::scrolllock/brightness
/sys/devices/platform/i8042/serio0/input/input2/input2::scrolllock/max_brightness
/sys/devices/pci0000:00/0000:00:14.3/leds/phy0-led/brightness
/sys/devices/pci0000:00/0000:00:14.3/leds/phy0-led/max_brightness
/sys/module/video/parameters/hw_changes_brightness
/sys/module/video/parameters/brightness_switch_enabled
/sys/module/huawei_wmi/parameters/report_brightness
/sys/module/i915/parameters/invert_brightness

[曲水流觞 (gpmnlxdw)]

Hi,
   The backlight issue is solved, just replace 'nomodeset' with 'i915.enable_psr=0' in grub, then backlight adjustment and screen flicker problem are both OK.

   ACPI still have a lot red alert message, but they do not bring obvoius bad effect by now, so this bug report could be closed.

   related topic : https://wiki.archlinux.org/title/intel_graphics

   B.R.