Comment # 41 on bug 101691 from Michel Dänzer

(In reply to Ethan Hsieh from comment #40)
> Cannot reproduce corruption issue with SNA_POWERSAVE enabled.

Interesting find. That can explain why the corruption is only reproducible with
the power supply connected with xf86-video-intel, but reproducible regardless
with the modesetting driver instead.

At this point, I think we really need someone at Intel to look into this in
more detail, reassigning.