Messages in this thread | | | From | Jani Nikula <> | Subject | Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7 merge window | Date | Tue, 13 Sep 2016 16:59:58 +0300 |
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On Sun, 11 Sep 2016, James Hogan <james@albanarts.com> wrote: > I've just bisected a similar (same?) problem (slow increase and > decrease of screen brightness with a period of a few seconds) to the > same commit (this is on a Dell XPS 13 laptop) > > commit a05628195a0d9f3173dd9aa76f482aef692e46ee > Author: Ville Syrjälä <ville.syrjala@linux.intel.com> > Date: Mon Apr 11 10:23:51 2016 +0300 > > drm/i915: Get panel_type from OpRegion panel details > > the difference for me is that good commits used the acpi backlight, > and bad ones used the intel backlight (/sys/class/backlight/). Its > like intel_backlight is fighting with the firmware to control the > backlight or something. Reverting the commit on v4.7.3 switches it > back to the acpi backlight and all works nicely again. > > let me know if I can provide anything else to help debug.
Please try [1].
BR, Jani.
[1] http://patchwork.freedesktop.org/patch/msgid/1473758539-21565-1-git-send-email-ville.syrjala@linux.intel.com
-- Jani Nikula, Intel Open Source Technology Center
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