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. releate topic : https://wiki.archlinux.org/title/intel_graphics B.R. -- 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 20.x also 21.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965605/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
