Re: [Intel-gfx] [PATCH] drm/i915/dp: add a delay before setting panel brightness after power on

2021-09-19 Thread Vasily Khoruzhick
On Wed, Sep 15, 2021 at 1:47 AM Jani Nikula wrote: > > On Tue, 14 Sep 2021, Vasily Khoruzhick wrote: > > On Tue, Sep 14, 2021 at 3:31 PM Jani Nikula > > wrote: > >> > >> On Tue, 14 Sep 2021, Lyude Paul wrote: > >> > On Tue, 2021-09-14 at 12:09 +0300, Jani Nikula wrote: > >> >> On Mon, 13 Sep 2

Re: [Intel-gfx] [PATCH] drm/i915/dp: add a delay before setting panel brightness after power on

2021-09-15 Thread Jani Nikula
On Tue, 14 Sep 2021, Vasily Khoruzhick wrote: > On Tue, Sep 14, 2021 at 3:31 PM Jani Nikula > wrote: >> >> On Tue, 14 Sep 2021, Lyude Paul wrote: >> > On Tue, 2021-09-14 at 12:09 +0300, Jani Nikula wrote: >> >> On Mon, 13 Sep 2021, Vasily Khoruzhick wrote: >> >> > Panel in my Dell XPS 7590, th

Re: [Intel-gfx] [PATCH] drm/i915/dp: add a delay before setting panel brightness after power on

2021-09-14 Thread Vasily Khoruzhick
On Tue, Sep 14, 2021 at 3:31 PM Jani Nikula wrote: > > On Tue, 14 Sep 2021, Lyude Paul wrote: > > On Tue, 2021-09-14 at 12:09 +0300, Jani Nikula wrote: > >> On Mon, 13 Sep 2021, Vasily Khoruzhick wrote: > >> > Panel in my Dell XPS 7590, that uses Intel's HDR backlight interface to > >> > control

Re: [Intel-gfx] [PATCH] drm/i915/dp: add a delay before setting panel brightness after power on

2021-09-14 Thread Jani Nikula
On Tue, 14 Sep 2021, Lyude Paul wrote: > On Tue, 2021-09-14 at 12:09 +0300, Jani Nikula wrote: >> On Mon, 13 Sep 2021, Vasily Khoruzhick wrote: >> > Panel in my Dell XPS 7590, that uses Intel's HDR backlight interface to >> > control brightness, apparently needs a delay before setting brightness

Re: [Intel-gfx] [PATCH] drm/i915/dp: add a delay before setting panel brightness after power on

2021-09-14 Thread Lyude Paul
On Tue, 2021-09-14 at 12:09 +0300, Jani Nikula wrote: > On Mon, 13 Sep 2021, Vasily Khoruzhick wrote: > > Panel in my Dell XPS 7590, that uses Intel's HDR backlight interface to > > control brightness, apparently needs a delay before setting brightness > > after power on. Without this delay the pa

Re: [Intel-gfx] [PATCH] drm/i915/dp: add a delay before setting panel brightness after power on

2021-09-14 Thread Jani Nikula
On Mon, 13 Sep 2021, Vasily Khoruzhick wrote: > Panel in my Dell XPS 7590, that uses Intel's HDR backlight interface to > control brightness, apparently needs a delay before setting brightness > after power on. Without this delay the panel does accept the setting > and may come up with some arbitr

[Intel-gfx] [PATCH] drm/i915/dp: add a delay before setting panel brightness after power on

2021-09-13 Thread Vasily Khoruzhick
Panel in my Dell XPS 7590, that uses Intel's HDR backlight interface to control brightness, apparently needs a delay before setting brightness after power on. Without this delay the panel does accept the setting and may come up with some arbitrary brightness (sometimes it's too dark, sometimes it's