[Bug 100745] amdgpu fails to wake up DisplayPort DELL monitors with 'clock recovery failed'
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Nov 22 18:41:28 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=100745
--- Comment #8 from Benjamin Bellec <b.bellec at gmail.com> ---
I hit the same problem today after enabling amdgpu.dc=1
The screen doesn't light up at all if I boot the kernel with amdgpu.dc=1
Config is:
Fedora 27 + kernel 4.15.0-0.rc0.git7.1.fc28.x86_64
Radeon R9 380X
Dell U2414H
dmesg error is:
kernel: [drm:dm_logger_write [amdgpu]] *ERROR* perform_clock_recovery_sequence:
Link Training Error, could not get CR after 100 tries.
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