[PATCH 0/1] [SRU][OEM-5.10/H] UBUNTU: SAUCE: Fix backlight control on Samsung 16727 panel

Aaron Ma aaron.ma at canonical.com
Wed Jun 2 06:57:13 UTC 2021

BugLink: https://bugs.launchpad.net/bugs/1930527

Backlight can't be controlled on 5.11- version of kernel.

The panel needs DPCD to get control of backlight.
After 5.12 kernel introduced new Intel HDR backlight control, and it
works well on this panel.
Add quirk ID to enable DPCD on 5.11- kernel.

Vendor Verified on hardware, with this quirk backlight can be changed on
5.10 and 5.11 kernel.

[Where problems could occur]
The panel backlight may not be changed.

Aaron Ma (1):
  UBUNTU: SAUCE: drm/i915: Force DPCD backlight mode for Samsung 16727

 drivers/gpu/drm/drm_dp_helper.c | 1 +
 1 file changed, 1 insertion(+)


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