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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - ThinkPad T450: RetroArch refuses to go back into windowed mode after fullscreen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96767#c14">Comment # 14</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - ThinkPad T450: RetroArch refuses to go back into windowed mode after fullscreen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96767">bug 96767</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>The chvt will cause a modeset which will flush the vblank queue (more evidence
that is a "lost" event in the kernel as opposed to userspace missing the event
enitrely). This will be very noisy, but I wonder if a drm.debug=0xff dmesg will
have a clue (you will probably also need to increase the dmesg to say
log_buf_len=10M) when you hit the hang and then chvt.</pre>
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