<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [IT6506 Display Receiver] DP hotplug fails (display and audio) with i915/kernel 3.11.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70301#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [IT6506 Display Receiver] DP hotplug fails (display and audio) with i915/kernel 3.11.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70301">bug 70301</a>
from <span class="vcard"><a class="email" href="mailto:ken.lin@advantech.com.tw" title="Ken Lin <ken.lin@advantech.com.tw>"> <span class="fn">Ken Lin</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=70301#c12">comment #12</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=70301#c10">comment #10</a>)
> > (In reply to <a href="show_bug.cgi?id=70301#c8">comment #8</a>)
> > > Please try v3.12-rc4 which should have
> > >
> > > commit bc86625a4ff7574d4d4dba79723457711eb784e0
> > > Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> > > Date: Sun Jul 21 16:00:03 2013 +0100
> > >
> > > drm/i915: Retry DP aux_ch communications with a different clock after
> > > failur
> > >
> > > which changes the divider and adds a retry with another divider.
> >
> > 1. The DP display issue(which may have to do with aux timeout) was gone with
> > commit bc86625a4ff7574d4d4dba79723457711eb784e0 (please see the kernel log
> > that I attached to this thread).
> >
> > 2. The DP display issue still exists in the commit prior to commit
> > bc86625a4ff7574d4d4dba79723457711eb784e0.
>
> Daniel, we need to consider backporting Chris' fix to stable kernels.
>
> > 3. The DP audio issue exists in commit
> > bc86625a4ff7574d4d4dba79723457711eb784e0 (no card codec interface was found
> > in /proc/asound/)
>
> From the logs:
>
> [ 8.878426] ALSA sound/pci/hda/hda_intel.c:3807 Haswell must build in
> CONFIG_SND_HDA_I915
> [ 8.878428] ALSA sound/pci/hda/hda_intel.c:3836 Error request power-well
> from i915
>
> Do you have CONFIG_SND_HDA_I915=y instead of =m?</span >
>
=> Sorry, tt might be my mistake to use the incorrect kernel configuration. I
will update it later.
<span class="quote">> Also, I'm confused by your dmesg in <a href="show_bug.cgi?id=70301#c9">comment #9</a> having "Linux version
> 3.11.0-rc2+" and the line numbers above match that kernel version. Were you
> running some frankenstein combination of 3.11-rc2 and 3.12-rc4 or what?</span >
=> I used git reset --hard bc86625a4ff7574d4d4dba79723457711eb784e0 (VERSION =
3, PATCHLEVEL = 11, SUBLEVEL = 0 EXTRAVERSION = -rc2 in Makefile)</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>