On Mon, Mar 19, 2012 at 12:07:36PM +0100, Takashi Iwai wrote: > Currently i915 driver checks [PCH_]LVDS register bits to decide > whether to set up the dual-link or the single-link mode. This relies > implicitly on that BIOS initializes the register properly at boot. > However, BIOS doesn't initialize it always. When the machine is > booted with the closed lid, BIOS skips the LVDS reg initialization. > This ends up in blank output on a machine with a dual-link LVDS when > you open the lid after the boot. > > This patch adds a workaround for that problem by checking the initial > LVDS register value in VBT. > > Reviewed-by: Rodrigo Vivi <rodrigo.vivi at gmail.com> > Reviewed-by: Adam Jackson <ajax at redhat.com> > Signed-off-by: Takashi Iwai <tiwai at suse.de> If I understand Keith correctly he would like this to only get used when the lid is closed and the panel is off. But I don't see that mention in you change log nor can I find how it works in the code. Has this been lost or am I confused? Thanks, Daniel -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48
