[Bug 1965605] Re: HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu 20.x also 21.10

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.

[Bug 1965605] Re: HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu 20.x also 21.10

Did the dmesg's output releate with the LCD backlight problem? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1965605 Title: HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu

[Bug 1965605] acpidump.txt

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[Bug 1965605] WifiSyslog.txt

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[Bug 1965605] UdevDb.txt

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[Bug 1965605] RfKill.txt

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[Bug 1965605] ProcModules.txt

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[Bug 1965605] ProcInterrupts.txt

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[Bug 1965605] PulseList.txt

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[Bug 1965605] ProcCpuinfoMinimal.txt

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[Bug 1965605] ProcEnviron.txt

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[Bug 1965605] ProcCpuinfo.txt

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[Bug 1965605] Lsusb-v.txt

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[Bug 1965605] Lsusb.txt

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[Bug 1965605] Lspci-vt.txt

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[Bug 1965605] Lsusb-t.txt

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[Bug 1965605] Lspci.txt

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[Bug 1965605] IwConfig.txt

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[Bug 1965605] CurrentDmesg.txt

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[Bug 1965605] CRDA.txt

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[Bug 1965605] Re: HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu 20.x also 21.10

apport information ** Tags added: apport-collected focal ** Description changed: 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.

[Bug 1965605] Re: HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu 20.x also 21.10

** Attachment added: "here is the dmesg output" https://bugs.launchpad.net/ubuntu/+bug/1965605/+attachment/5570633/+files/dmesg.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1965605 Title: H

[Bug 1965605] [NEW] HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu 20.x also 21.10

Public bug reported: 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 : ** Affects: ubuntu Importance: Undecided