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<body><span class="vcard"><a class="email" href="mailto:dufresnep@gmail.com" title="Paul Dufresne <dufresnep@gmail.com>"> <span class="fn">Paul Dufresne</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - sony vaio with ati graphics flashing flikering"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97986">bug 97986</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">See Also</td>
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<td>https://bugs.freedesktop.org/show_bug.cgi?id=108514
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - sony vaio with ati graphics flashing flikering"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97986#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - sony vaio with ati graphics flashing flikering"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97986">bug 97986</a>
from <span class="vcard"><a class="email" href="mailto:dufresnep@gmail.com" title="Paul Dufresne <dufresnep@gmail.com>"> <span class="fn">Paul Dufresne</span></a>
</span></b>
<pre>I suspect it could be the same problem as in <a class="bz_bug_link
bz_status_NEW "
title="NEW - heavy screen flickering with Mobility Radeon X1600 and kernel version 3.15rc2 onward"
href="show_bug.cgi?id=108514">bug #108514</a>.
Best workaround known would be to boot with nomodeset kernel parameter.
Adding drm.debug=4 (kernel mode setting messages) to kernel parameters
would give more usefull dmesg output.
Suspected problem for #108514 would be related to compute_avivo_pll_[something]
in gpu/drm/radeon/radeon_display.c.
Possibly the max pll clock frequency.
I hope to be able to investigate beginning of next week.</pre>
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