[Bug 107978] [amdgpu] Switching to tty fails with DisplayPort 1.2 monitor going to sleep (REG_WAIT timeout / dce110_stream_encoder_dp_blank)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107978

--- Comment #14 from Shmerl <shtetldik at gmail.com> ---
(In reply to Nicholas Kazlauskas from comment #13)
> 
> If I had to guess I would say this is an issue specific to that monitor - DP
> 1.2 should generally work without issue.

It did work fine before in DP 1.2 mode (like with kernel 4.17.x), so there must
have been some regression which caused this behavior.

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