[Bug 55500] [sna gen4] corrupt rendering (and flickering on redraw)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=55500

--- Comment #89 from Zdenek Kabelac <zdenek.kabelac at gmail.com> ---
Hmm - after doing some more experiments -  the  high load on GPU seems to be
pretty much the thing which make the problem visible.

Another interesting thing is - it's usually enough to just 'reload' the very
same page in Firefox and the load goes down to ~1% and everything is ok.

Also the kernel perf top doesn't seem to be showing anything interesting.

And a side note - when  intel_gpu_top is running - the laptop is actually
giving some whistling noise not really pleasant for longterm usage ;)....

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