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

[AceLan Kao]

I can't reproduce this issue on the mainline kernel, so it's more like
we miss some commits in our code base.
BTW, this issue could also be reproduced on Hirsute 5.11 kernel, I'll
keep working on it.

Tim Gardner <tim.gardner at canonical.com> 於 2021年4月15日 週四 下午7:31寫道：
>
> 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