On Wed, 16 Nov 2011 18:14:55 +0100, Takashi Iwai <tiwai at suse.de> wrote: > While refactoring of backlight control code in commit [a95735569: > drm/i915: Refactor panel backlight controls], the handling of the bit > 0 of duty-cycle was gone except for pineview. This resulted in invalid > register values for old chips like 915GM. When the bit 0 is set, the > backlight is turned off suddenly. I'm looking at the mentioned patch and I don't see how that managed to correctly handle bit 0; is this the patch that managed to break this? -- keith.packard at intel.com -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 827 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20111116/e6229dcd/attachment.pgp>