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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [Intel NUC] HDMI1 sometimes stops working after resuming from s3 (a single monitor setup)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106182#c30">Comment # 30</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [Intel NUC] HDMI1 sometimes stops working after resuming from s3 (a single monitor setup)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106182">bug 106182</a>
from <span class="vcard"><a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> <span class="fn">Imre Deak</span></a>
</span></b>
<pre>(In reply to Imre Deak from <a href="show_bug.cgi?id=106182#c29">comment #29</a>)
<span class="quote">> (In reply to Imre Deak from <a href="show_bug.cgi?id=106182#c27">comment #27</a>)
> > (In reply to Robert Liu from <a href="show_bug.cgi?id=106182#c26">comment #26</a>)
> > > Created <span class=""><a href="attachment.cgi?id=139458" name="attach_139458" title="dmesg for outb and inb commands #2">attachment 139458</a> <a href="attachment.cgi?id=139458&action=edit" title="dmesg for outb and inb commands #2">[details]</a></span>
> > > dmesg for outb and inb commands #2
> > >
> > > Well, the screen now is off. However, I cannot recover it by poweroff.
> > > A removal of the adapter is required to make the screen back.
> > >
> > > It looks to me the behavior is slightly different from the issue has.
> >
> > Yes, the sequence you tried just keeps the chip in reset you also need to
> > remove the reset condition to re-enable the display. If the following blanks
> > and unblanks the display for you when it's enabled properly, could you try
> > it again from the stuck state?
> >
> > v=$(outb 0x66 0x80; outb 0x62 0x1a; inb 0x62)
> > echo $v
> > outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v | 9 ))
> > outb 0x66 0x80; outb 0x62 0x1a; inb 0x62
> >
> > sleep 0.1
> >
> > outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v & ))
>
>
> > outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v | 1 ))
>
>
> > outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $v
>
> Err, sorry made a mistake the sequence correctly:
>
> v=$(outb 0x66 0x80; outb 0x62 0x1a; inb 0x62)
> echo $v
> outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v | 9 ))
> outb 0x66 0x80; outb 0x62 0x1a; inb 0x62
>
> sleep 0.1
>
> outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v | 1 ))
> outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $v</span >
But please run the above after powering off/on the machine, reboot is not
enough.</pre>
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