On Tue, 2014-02-25 at 10:05 +0200, Jani Nikula wrote: > On Thu, 20 Feb 2014, Paul Bolle <pebolle@xxxxxxxxxx> wrote: > > On an (rather old) ThinkPad X41, which also uses i915, brightness > > adjustments stopped working altogether in v3.14-rc1 (I haven't used its > > docking station in the v3.14 release cycle). In v3.13.y things behave as > > expected. So perhaps there's actually a more general problem here. > > I presume different problems. Does the ThinkPad X41 have gen3 graphics? > (See e.g. /sys/kernel/debug/dri/0/i915_capabilities) If yes, it might be > https://bugs.freedesktop.org/show_bug.cgi?id=75001 Yes, it has "gen3" graphics (a 915GM). And applying your patch "drm/i915: use backlight legacy combination mode also for i915gm/i945/gm" on top of v3.14-rc5 fixes the issue on that ThinkPad X41. Thanks, Paul Bolle _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
