[Bug 109806] [REGRESSION] X fails to start properly in 4.20.13

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109806

Maarten Lankhorst <bugs at mblankhorst.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |REOPENED

--- Comment #24 from Maarten Lankhorst <bugs at mblankhorst.nl> ---
Not a bug in the kernel, xorg's modesetting driver needs to set all
connectors/crtc's directly when using atomic. The legacy path disabled crtc B
for you if you stole all its connectors for a different crtc. In the atomic
case you need to disable it yourself.

This is a bug in x.org's modesetting driver.

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