The Acer C720 and C720P Chromebooks (with Celeron 2955U CPU) have a controllable backlight although their VBT reports otherwise. Apply quirk to ignore the backlight presence check during backlight setup.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79813 Tested-by: James Duley <jagdu...@gmail.com> Tested-by: Michael Mullin <masmul...@gmail.com> Signed-off-by: Scot Doyle <lkm...@scotdoyle.com> CC: Jani Nikula <jani.nik...@intel.com> --- drivers/gpu/drm/i915/intel_display.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index fae289f..7345441 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -12391,6 +12391,9 @@ static struct intel_quirk intel_quirks[] = { /* Acer Aspire 5336 */ { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness }, + + /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */ + { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present }, }; static void intel_init_quirks(struct drm_device *dev) -- 1.7.10.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
