On Sun, 11 Sep 2016, James Hogan <james@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx> > 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@xxxxxxxxxxxxxxx -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
