On 14/11/17 03:37 PM, Tom St Denis wrote: > On 14/11/17 09:36 AM, Harry Wentland wrote: >> On 2017-11-14 08:30 AM, Tom St Denis wrote: >>> Hi all, >>> >>> Found when testing the tip of drm-next on my A12-9800 Carrizo. >>> >>> [root at carrizo linux]# git bisect good >>> 138a3358c17918bb5cd5aa1ea9e8760ac69c515d is the first bad commit >>> commit 138a3358c17918bb5cd5aa1ea9e8760ac69c515d >>> Author: Yongqiang Sun <yongqiang.sun at amd.com> >>> Date:  Tue Nov 7 11:01:34 2017 -0500 >>> >>>     drm/amd/display: Optimize programming front end >>> >>>     In case of update type is medium, optimize squence, >>>     reduce programing time. >>> >>>     Change-Id: Ib1793408897b0c4d4a64434c239c3703d43e83d9 >>>     Signed-off-by: Yongqiang Sun <yongqiang.sun at amd.com> >>>     Reviewed-by: Tony Cheng <Tony.Cheng at amd.com> >>>     Acked-by: Harry Wentland <harry.wentland at amd.com> >>> >>> :040000 040000 8d62da91eddb89e8152b46cce5c1c8aa8edb80bf >>> c377c5887076041e5a61640e78be756af48001ff M     drivers >>> >>> >>> When I load amdgpu I get a screen that is mostly white with red bars >>> and then some noise. Nothing shows up in my dmesg log that is >>> specific to this error. >>> >>> When I load X it seems like it's working though. I do get noise when >>> I resize mpv from full to windowed (and back) but it goes away. >>> >> >> We've had a ton of fallout from this change. Can you open a Jira >> ticket and queue it to us? > > Sure will do. FWIW, I was seeing similar symptoms on Tonga, except even Xorg didn't always display correctly; sometimes it only started displaying correctly once a client used page flipping. Anyway, it's fixed for me with the latest DC commits which were missing before. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
