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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110954#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110954">bug 110954</a>
from <span class="vcard"><a class="email" href="mailto:nathan.d.ciobanu@linux.intel.com" title="Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com>"> <span class="fn">Nathan Ciobanu</span></a>
</span></b>
<pre>On Wed, Aug 21, 2019 at 08:26:34AM +0000, <a href="mailto:bugzilla-daemon@freedesktop.org">bugzilla-daemon@freedesktop.org</a>
wrote:
<span class="quote">> <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor"
href="show_bug.cgi?id=110954">https://bugs.freedesktop.org/show_bug.cgi?id=110954</a>
>
> --- <a href="show_bug.cgi?id=110954#c17">Comment #17</a> from Stanislav Lisovskiy <<a href="mailto:stanislav.lisovskiy@intel.com">stanislav.lisovskiy@intel.com</a>> ---
> (In reply to Nathan Ciobanu from <a href="show_bug.cgi?id=110954#c16">comment #16</a>)
> > On Tue, Aug 20, 2019 at 10:02:48AM +0000, <a href="mailto:bugzilla-daemon@freedesktop.org">bugzilla-daemon@freedesktop.org</a>
> > wrote:
> > > <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor"
href="show_bug.cgi?id=110954">https://bugs.freedesktop.org/show_bug.cgi?id=110954</a>
> > >
> > > --- <a href="show_bug.cgi?id=110954#c15">Comment #15</a> from Stanislav Lisovskiy <<a href="mailto:stanislav.lisovskiy@intel.com">stanislav.lisovskiy@intel.com</a>> ---
> > > (In reply to Nathan Ciobanu from <a href="show_bug.cgi?id=110954#c13">comment #13</a>)
> > > > (In reply to Stanislav Lisovskiy from <a href="show_bug.cgi?id=110954#c12">comment #12</a>)
> > > > > What do you mean by "that if you wait for the this reprobing to finish and
> > > > > then play the video the flash will not occur"?
> > > > >
> > > > > So it does not happen once you start playback, but at some point before this?
> > > >
> > > > The flash happens if you play the video (with audio) before the reprobe, If
> > > > you play the video after reprobe it doesn't occur.
> > >
> > > But when does reprobe occur? Does it occur on its own or after you replug it or
> > > some other action?
> > It always occurs regardless of my actions.
>
> That is weird then. It should occur only once you do hotplug/change display
> configuration. It should not happen on its own, probably that might be origin
> of this issue.</span >
That is my suspicion as well. I don't know how hda behaves in MST situations
but maybe it isn't "ready" right away when the displays finish training but may
become "ready" a few seconds later and thus trigger a reprobe. To prove this
which register do I need to print?
Thanks,
Nathan
<span class="quote">>
> >
> > >
> > > --
> > > You are receiving this mail because:
> > > You are on the CC list for the bug.
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.</span ></pre>
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