The following commit: [root at fx6 linux]# git bisect good aa7187c5c640559ebc02caa0191c0db46b55b4a6 is the first bad commit commit aa7187c5c640559ebc02caa0191c0db46b55b4a6 Author: Christian König <christian.koenig at amd.com> Date: Thu Oct 26 12:00:36 2017 +0200 drm/amd/display: enable GPU VM support Just set the bit so that DC does the hardware programming. Signed-off-by: Christian König <christian.koenig at amd.com> Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com> :040000 040000 c6d725acce6507b6d9381667d828e8e0d4683af7 2dfcfab32ef3e7d24a31eb420dd1186cf973cd7d M drivers Results in the (attached) dmesg logs on my Tonga system. Cheers, Tom -------------- next part -------------- A non-text attachment was scrubbed... Name: tonga.dmesg.gz Type: application/gzip Size: 30585 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/amd-gfx/attachments/20171027/810ca2ea/attachment-0001.gz>