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<body><span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BSW Bisected]System fails to find eDP monitor."
href="https://bugs.freedesktop.org/show_bug.cgi?id=84265">bug 84265</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>ASSIGNED
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BSW Bisected]System fails to find eDP monitor."
href="https://bugs.freedesktop.org/show_bug.cgi?id=84265#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BSW Bisected]System fails to find eDP monitor."
href="https://bugs.freedesktop.org/show_bug.cgi?id=84265">bug 84265</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=84265#c5">comment #5</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=84265#c2">comment #2</a>)
> > (In reply to <a href="show_bug.cgi?id=84265#c1">comment #1</a>)
> > > Have you perhaps upgraded the BIOS on the machine recently?
> >
> Both BIOS V35 and V36 fail to detect eDP.
> > That's my question as well. I had another report of eDP going missing on one
> > machine and there the HDMIC/DP_C registers report the port as not detected.
> > My own RVP board with the latest BIOS seems to work just fine however.
> >
> > What does this say on the failing machine?
> > intel_reg_read 0x1e1140 0x1e1160 0x1e116c 0x1e4100 0x1e4200 0x1e4300
>
> root@x-bsw02:~# intel_reg_read 0x1e1140 0x1e1160 0x1e116c 0x1e4100 0x1e4200
> 0x1e4300
> 0x1E1140 : 0x81C
> 0x1E1160 : 0x1A
> 0x1E116C : 0x82000B5E
> 0x1E4100 : 0x1C
> 0x1E4200 : 0xA0010018
> 0x1E4300 : 0x1C</span >
And what do you get if you run intel_reg_read before loading i915.ko?
The detect bits seem to be read-only on my BSW at least so this seems like a
board/BIOS issue. And that makes the the bisect result really unexpected.</pre>
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