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. 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.
