[Bug 97202] IvyBridge broken fonts on resume

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97202

--- Comment #14 from Nikolay <mar.kolya at gmail.com> ---
Hi.

I've noticed one thing: sometimes switching to text console and back shows
similar problem. I've see the problem after following actions:
1) Cold restart.
2) Login and start applications (notably FF with compositor enabled), wait for
many tabs to load.
3) Switch to text console - at this point screens go black - there is no text
console prompt, at this point text console is broken.
4) Switch back to X and observe broken fonts.

Unfortunately these steps do not always exhibit the problem. Also I've see text
console going bad, but fonts in X not breaking. So I'm not sure if that is
related.

But somehow I thought that following is possible: switching to text console
allocates memory somewhere and somehow fails/allocates it in wrong way. And
this breaks fonts (sometimes). Now: wake up is only related because maybe it
switches for text console for a brief moment during awakening.

Is 'text console going black' some sort of a known problem? Can it be related
to this one? Should I file a separate ticket?

Thanks!

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