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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - 24Hz (&23.976Hz) modes broken with recent drivers"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87112#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - 24Hz (&23.976Hz) modes broken with recent drivers"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87112">bug 87112</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Yes, xrandr switches mode correctly. Then something tells to switch back. Do
you have a display manager running in the background responding to RandR
notifications?
What you might like to try is gdb Xorg and "b __sna_crtc_set_mode" to see where
the mode resets are originating from (i.e. whether they are due to client
requests or internal). I suspect external requests, like a display manager
applying its configuration everytime it notices a change.</pre>
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