ACK/Cmnt: [PATCH 0/1][SRU][OEM-5.10] Can't adjust brightness on HP ZBook Fury 17 G7

[Tim Gardner]

Acked-by: Tim Gardner <tim.gardner at canonical.com>

Have you made progress on root cause ? If not, Are you going to upstream 
this patch ? Otherwise shouldn't we carry it in Hirsute and Unstable ?

rtg

On 4/12/21 2:28 AM, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1923000
> 
> [Impact]
> The brightness could not be adjusted, and after resumed the screen is blank.
> 
> [Fix]
> It looks like below commit in oem-5.10 introduces the regression
>     ade9f1d9f14ef drm/i915/dp: Program source OUI on eDP panels
> But it's not the culprit as mainline kernel doesn't have this issue.
> So, adding a quirk on this commit to make it only affect on a certain Dell
> platform to avoid the issue. Will figure out the problem and submit a
> formal fix later.
> 
> [Test]
> Verified on Dell and HP platforms, both platforms work well.
> 
> [Where problems could occur]
> The quirk should be pretty safe for other platforms.
> 
> Chia-Lin Kao (AceLan) (1):
>    UBUNTU: SAUCE: drm/i915/dp add a quirk for backlight issue
> 
>   drivers/gpu/drm/i915/display/intel_dp.c | 15 +++++++++++++--
>   1 file changed, 13 insertions(+), 2 deletions(-)
> 

-- 
-----------
Tim Gardner
Canonical, Inc