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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - screen corruption using SNA and TearFree on Intel GeminiLake"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105720#c22">Comment # 22</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - screen corruption using SNA and TearFree on Intel GeminiLake"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105720">bug 105720</a>
from <span class="vcard"><a class="email" href="mailto:clinton.a.taylor@intel.com" title="Clinton Taylor <clinton.a.taylor@intel.com>"> <span class="fn">Clinton Taylor</span></a>
</span></b>
<pre>(In reply to Martin Peres from <a href="show_bug.cgi?id=105720#c19">comment #19</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=138397" name="attach_138397" title="Diff needed to fix the issue, to be applied on top of 6c1e70ca4234a5ab23fcdb3735fc55ac7939c52c (current HEAD)">attachment 138397</a> <a href="attachment.cgi?id=138397&action=edit" title="Diff needed to fix the issue, to be applied on top of 6c1e70ca4234a5ab23fcdb3735fc55ac7939c52c (current HEAD)">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=105720&attachment=138397'>[review]</a> [review]
> Diff needed to fix the issue, to be applied on top of
> 6c1e70ca4234a5ab23fcdb3735fc55ac7939c52c (current HEAD)
>
> So, the root window is getting corrupted even when using tripple buffering,
> which means the root window would never re-use buffers created by SNA.
>
> To rule out anything related to the HW, we tried using as much fallback code
> as possible using Option "AccelMethod" "none" (Chris' suggestion).
>
> Instead of fixing the problem, it made it extremely easy to reproduce. Chris
> asked for a full debug log (--enable-debug=full), which I could not get
> because SNA would hit an assert. Once commented out, I could produce a trace
> for Chris to read.
>
> He found an issue using the trace and wrote a one-liner that seem to fix the
> problem. The only problem is that Chris does not understand why this fixes
> the issue at hand...
>
> I am still posting the information now, for other parties to try to
> reproduce.</span >
Patch does not fix the issue. Sometimes the issue can not be reproduced over
several hours.
What was your xorg.conf Options during your testing?</pre>
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