On 2018-03-07 12:38 PM, KARBOWSKI Piotr wrote: > On 2018-03-07 17:48, KARBOWSKI Piotr wrote: >> On 2018-03-07 17:14, Harry Wentland wrote: >>> Pushed a drm-fixes-4.16 branch (based on Alex's) to my FDO repo athttps://cgit.freedesktop.org/~hwentland/linux/Â ; but I don't have a Raven system setup to test this at the moment. >>> >>> Tom, or Piotr, would you be able to check that the fix works as intended on that branch? >> >> Tested that branch, confirmed that the VGA patch is there but I got the original result of broken video. Rebooted few times. It seems that my issue was not the VGA turnover afterall. I will re-test it with vanilla amd-staging-drm-next of git://people.freedesktop.org/~agd5f/linux without the VGA patch and update you. Thanks for testing. What do you mean with broken video? I tried going back in the email thread but I'm not 100% clear what you mean by this. BTW, drm-fixes-4.16 are fixes we intend to get into the 4.16 upstream kernel. amd-staging-drm-next is our development tree and quite a bit farther ahead in development. I'm trying to find fixes to backmerge to 4.16 to make everyone happy when it releases. Harry > > I re-tested original tree of git://people.freedesktop.org/~agd5f/linux on branch amd-staging-drm-next and got the 'double screen' glitches, then I applied the patch Tom sent me as the very first response to this thread and then it indeed fixed it. So the VGA takeover patch is needed it, it seems. > > I triple checked and build the images and the drm-fixes-4.16 of git://people.freedesktop.org/~hwentland/linux does not fix the problem for me. > > So far only amd-staging-drm-next with 0001-drm-amd-display-Fix-takeover-from-VGA-mode.patch does the trick. One thing worth note is that the amd-staging-drm-next goes as `rc1` where yours fork Harry appears to be rc3, no idea if it's related or not. > > -- Piotr.
