[Bug 93782] [i9xx TV][BISECT] vblank wait timeout on crtc

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93782

--- Comment #18 from andram <andreas.amann at gmx.de> ---
One more data point on this:

I notice that the "vblank wait timed out on crtc 0" warning is apparently
triggered by switching from the linux console to the X server.  This is either
at booting, when the X-server starts for the first time, or when I switch to
the console and back to X manually using Ctrl-Alt-F1 followed by Alt-F7. 

For one switch I get typically three such warnings with call traces, and there
is a clear delay of about a second before X is responsive again after the
switch.  Any keys presseed during this time are swallowed. Then there is a
short flicker of the whole screen just before X is again responsive to kbd and
mouse input.

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