[Bug 83677] [HSW] GPU hang on ctx load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83677

--- Comment #34 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to comment #33) 
> Without drm.debug=7, this gives me the VT race that ends in X logging:
> 
> [    79.069] (++) using VT number 1
> 
> [    79.070] (WW) xf86OpenConsole: setpgid failed: Operation not permitted
> [    79.070] (WW) xf86OpenConsole: setsid failed: Operation not permitted
> [    79.070] (EE) 
> Fatal server error:
> [    79.070] (EE) xf86OpenConsole: VT_ACTIVATE failed: Input/output error

Not my fault! It's a race entirely in the VT layer. It's been plaguing my
machines for many months but I haven't decyphered enough of the VT code to
understand what it is trying to do, let alone why it is failing.

If you try to start X again, it will work - it's purely a timing issue afaict.

Would be good to know if the machine runs stable without the drm.debug, and
what happens without i915.enable_rc6=0.

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