Created attachment 31540 [details] Xorg.0.log After resume from suspend or hibernate the screen is green with some very wrong x resolution or blooming with flicker. I ran radedontool regmatch and compared before and after, and when I manually regset LVDS_GEN_CNTL 0x003c00a5 the screen comes back and everything is fine. Latest git of DDX. The Ubuntu 2.6.32-5.6-generic kernel is based on 2.6.32-rc8.
I should mention that this is a huge step forward from some months ago, when resuming with KMS would just give a dead screen/laptop with no backlight.
Created attachment 31541 [details] regmatch '*' after boot
Created attachment 31542 [details] reg dump after hibernation
Created attachment 31543 [details] reg dump after suspend
I see the screen goes funny (green or blooming) before power goes off, in the case of hibernation before the long write-to-disk.
Created attachment 31571 [details] [review] pull in lvds misc mode info This patch makes sure to pull in the misc mode info for lvds (syn polarity, etc.).
Created attachment 31572 [details] [review] fix LVDS setup on r4xx chips R4xx mobility chips use atombios, which does not store the LVDS_GEN_CNTL parameter setup like combios; rather, it's configured on fly in LVDSEncoderControl. As such, LVDS_GEN_CNTL is set wrong on resume. Call LVDSEncoderControl to set it properly. This patch should fix the issue. Another thing to try would be to try the r4xx_atom module option; this forces the use of atom calls to set modes on r4xx cards.
Thanks! With the two patches it works perfectly. Using the r4xx_atom module option did not work, the screen got extremely fuzzy (horizontal flicker).
Fixed in 2.6.33.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.