This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.6 in Ubuntu. https://bugs.launchpad.net/bugs/1892010 Title: [SRU] Fix acpi backlight issue on some thinkpads Status in HWE Next: New Status in linux package in Ubuntu: Triaged Status in linux-oem-5.6 package in Ubuntu: Invalid Status in linux source package in Focal: Fix Committed Status in linux-oem-5.6 source package in Focal: Fix Committed Status in linux source package in Groovy: Triaged Bug description: [Impact] On some ThinkPads, the BIOS reported invalid acpi backlight implement . Then backlight can't be changed because OS use acpi backlight by default. [Fix] Check acpi backlight mode, disable it if invalid. [Test Case] Verified on 3 models of thinkpad include Intel/NV/AMD GPU with positive results. [Regression Potential] Low Most ThinkPads now use native backlight control by default. Check the false acpi mode correctly. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1892010/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
