[Bug 70301] [IT6506 Display Receiver] DP hotplug fails (display and audio) with i915/kernel 3.11.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70301

--- Comment #16 from Ken Lin <ken.lin at advantech.com.tw> ---
(In reply to comment #14)
> (In reply to comment #13)
> > (In reply to comment #12)
> > > (In reply to comment #10)
> > > > (In reply to comment #8)
> > > > > Please try v3.12-rc4 which should have
> > > > > 
> > > > > commit bc86625a4ff7574d4d4dba79723457711eb784e0
> > > > > Author: Chris Wilson <chris at chris-wilson.co.uk>
> > > > > 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?
> > >
> > 
> > => Sorry, tt might be my mistake to use the incorrect kernel configuration.
> > I will update it later.
> > 
> >  
> > > Also, I'm confused by your dmesg in comment #9 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?
> > 
> > => I used git reset --hard bc86625a4ff7574d4d4dba79723457711eb784e0 (VERSION
> > = 3, PATCHLEVEL = 11, SUBLEVEL = 0 EXTRAVERSION = -rc2 in Makefile)
> 
> That doesn't do what you think it does. Use git checkout.

1.  The kernel version would be 3.11.0-rc2 (referring to VERSION =3, PATCHLEVEL
= 11 SUBLEVEL = 0, EXTRAVERSION = -rc2 in Makefile) when I used git git
checkout bc86625a4ff7574d4d4dba79723457711eb784e0


2. The DP display/audio functions are working with this commit
bc86625a4ff7574d4d4dba79723457711eb784e0 (please check the attachment 87638 for
the kernel log info; the audio issue was gone if I used the correct kernel
config)

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20131015/6c7ad5ef/attachment.html>