[Bug 96767] ThinkPad T450: RetroArch refuses to go back into windowed mode after fullscreen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96767

--- Comment #26 from Diego Viola <diego.viola at gmail.com> ---
(In reply to Chris Wilson from comment #14)
> 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?

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