[Bug 55500] [sna gen4] corrupt rendering (including wrong rendering of characters and flickering on redraw)

[bugzilla-daemon at freedesktop.org]

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

--- Comment #125 from Zdenek Kabelac <zdenek.kabelac at gmail.com> ---
Well here is just another one -

$ ./basic-copyarea
Opened connection to :0 for testing.
Testing setting of single pixels (root): passed [1 iterations x 4096]
Testing area sets (root): passed [1 iterations x 4096]
Testing area fills (root, using pixmap source): passed [1 iterations x 4096]
Testing area fills (root, using window source): passed [1 iterations x 4096]
Testing setting of single pixels (child): passed [1 iterations x 4096]
Testing area sets (child): passed [1 iterations x 4096]
Testing area fills (child, using pixmap source): passed [1 iterations x 4096]
Testing area fills (child, using window source): passed [1 iterations x 4096]
Testing setting of single pixels (pixmap): passed [1 iterations x 4096]
Testing area sets (pixmap): passed [1 iterations x 4096]
Testing area fills (pixmap, using pixmap source): passed [1 iterations x 4096]
Testing setting of single pixels (root): passed [2 iterations x 2048]
Testing area sets (root): failed to set pixel (0,0) to 0072dc99 [0e72dc99],
found 00000000 [00000000] instead
00000000 00000000 00000000     0e72dc99 0e72dc99 0e72dc99 
5146daef 5146daef 5146daef     0e72dc99 0e72dc99 0e72dc99 
5146daef 5146daef 5146daef     0e72dc99 0e72dc99 0e72dc99 


Unsure if it's related to anything and test seems to be lenghty -
but there seems to be some observable pattern.

Anyway - could I help here with testing some patch - or do you get same errors
yourself on your available hardware ?

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