[PATCH 0/1][SRU][L][OEM-6.1] Screen backlight keeps in minimized and can't change it with amdgpu

AceLan Kao acelan.kao at canonical.com
Thu Mar 2 09:40:28 UTC 2023


From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>

BugLink: https://launchpad.net/bugs/2008871

[Impact]
Sometimes the system boots up with both acpi_video0 and amdgpu_bl0 sysfs
interfaces and the acpi_video0 doesn't work.

[Fix]
Add this machine to the video_detect_dmi_table to force it uses native
backlight interface which is amdgpu_bl0.

https://lkml.org/lkml/2023/3/2/187

[Verify]
Verified by our QA and ODM.

[Where problems could occur]
Pretty safe to add the DMI quirk, won't affect other platforms.

Chia-Lin Kao (AceLan) (1):
  UBUNTU: SAUCE: ACPI: video: Add backlight=native DMI quirk for Dell
    Vostro 15 3535

 drivers/acpi/video_detect.c | 7 +++++++
 1 file changed, 7 insertions(+)

-- 
2.34.1




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