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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - ThinkPad T450: RetroArch refuses to go back into windowed mode after fullscreen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96767#c30">Comment # 30</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - 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:diego.viola@gmail.com" title="Diego Viola <diego.viola@gmail.com>"> <span class="fn">Diego Viola</span></a>
</span></b>
<pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=96767#c27">comment #27</a>)
<span class="quote">> (In reply to Diego Viola from <a href="show_bug.cgi?id=96767#c26">comment #26</a>)
> > (In reply to Chris Wilson from <a href="show_bug.cgi?id=96767#c14">comment #14</a>)
> > > 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.
> >
> > Chris, you mentioned this was a possible kernel bug, but I got that commit
> > that is causing this in xf86-video-intel.
> >
> > Do you have any suggestions please?
>
> I've run over 96hours on xf86-video-intel/test/dri2-race that captures all
> of the issues you have hit so far and more. Both xorg-1.18.0 (as
> demonstrated earlier and fixed) and xorg-1.19-rc are buggy. That change just
> moves a spurious early signal to the later pending flip, i.e. expanding the
> race window. It is not the culprit you think it is.</span >
I think you're right, I went back to Aug. 2015 and I still get these hangs,
going back further I get compile time errors and I can't test anymore.
It's interesting though that some of those commits are OK and don't hang. I'm
out of ideas. :(</pre>
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