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    <body><span class="vcard"><a class="email" href="mailto:preining@logic.at" title="Norbert Preining <preining@logic.at>"> <span class="fn">Norbert Preining</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - [sna gen4 w/a] corrupt rendering (including wrong rendering of characters and flickering on redraw)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=55500">bug 55500</a>
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            <th>What</th>
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           <td style="text-align:right;">CC</td>
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           <td>preining@logic.at
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        <div>
            <b><a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - [sna gen4 w/a] corrupt rendering (including wrong rendering of characters and flickering on redraw)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=55500#c193">Comment # 193</a>
              on <a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - [sna gen4 w/a] corrupt rendering (including wrong rendering of characters and flickering on redraw)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=55500">bug 55500</a>
              from <span class="vcard"><a class="email" href="mailto:preining@logic.at" title="Norbert Preining <preining@logic.at>"> <span class="fn">Norbert Preining</span></a>
</span></b>
        <pre>Dear all,

since 4.4-rc series I am again seeing this kind of corruption, especially after
return from sleep (suspend to ram).

This happens on a Sony VAIO Pro, 

00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 09) (prog-if 00 [VGA controller])
    Subsystem: Sony Corporation Device 90b6
    Flags: bus master, fast devsel, latency 0, IRQ 40
    Memory at f5c00000 (64-bit, non-prefetchable) [size=4M]
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at f000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [d0] Power Management version 2
    Capabilities: [a4] PCI Advanced Features
    Kernel driver in use: i915

Switching to 4.3 resolves the issue.

Software is Debian/sid uptodate, that is xorg 7.7, driver-intel 2.99.917

Is this a known problem on the new kernels?

Thanks

Norbert</pre>
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