Comment # 24
on bug 43655
from Alexandre Demers
62444b7462a2b98bc78d68736c03a7c4e66ba7e2 is the first bad commit commit 62444b7462a2b98bc78d68736c03a7c4e66ba7e2 Author: Alex Deucher <alexander.deucher@amd.com> Date: Wed Aug 15 17:18:42 2012 -0400 drm/radeon: properly handle mc_stop/mc_resume on evergreen+ (v2) - Stop the displays from accessing the FB - Block CPU access - Turn off MC client access This should fix issues some users have seen, especially with UEFI, when changing the MC FB location that result in hangs or display corruption. v2: fix crtc enabled check noticed by Luca Tettamanti Signed-off-by: Alex Deucher <alexander.deucher@amd.com> :040000 040000 3e0d33c9b4eda29ced814fe9a863efe63e53f14c 4932561607b160734ec1eade927a9fe18c9f3f1b M drivers So in other words, your explanation Alex seems to be right. I'll be waiting if anything has to be tested.
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