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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - weston-launch no output - black screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75761#c29">Comment # 29</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - weston-launch no output - black screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75761">bug 75761</a>
from <span class="vcard"><a class="email" href="mailto:ppaalanen@gmail.com" title="Pekka Paalanen <ppaalanen@gmail.com>"> <span class="fn">Pekka Paalanen</span></a>
</span></b>
<pre>Hmm, a third remote possibility came to mind. If the timestamp delivered with
the DRM pageflip event does not advance, I suppose Weston's fade-in animation
might not advance either and therefore it never fades in. However this is hard
for me to believe, as I think it would have caused problems with Xorg, too...
wouldn't it?
Or maybe Xorg is only looking at the vblank counters, and you'd actually need a
program using GLX_OML_sync_control to even see the timestamps?
One could check the timestamps by:
weston_log("%s: time %u.%06u frame %u\n", __func__, sec, usec, frame);
in compositor-drm.c page_flip_handler() function.
Mm, I'd like to see a weston log with that when you have the black screen
problem.</pre>
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