** Changed in: linux (Ubuntu Groovy)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Groovy)
Status: Incomplete => Triaged
** Changed in: linux-oem-5.6 (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Status: New => Triaged
** Changed in: linux (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Focal)
Status: New => Triaged
** Summary changed:
- [SRU][F/OEM-5.6/Groovy] Fix acpi backlight issue on some thinkpads
+ [SRU] Fix acpi backlight issue on some thinkpads
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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:
Triaged
Status in linux-oem-5.6 source package in Focal:
Triaged
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
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