linux-kernel - Re: Linux 3.2-rc1

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Date:	Wed, 9 Nov 2011 20:03:21 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Nick Bowler <nbowler@...iptictech.com>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	Keith Packard <keithp@...thp.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 3.2-rc1

On Wed, Nov 09, 2011 at 03:40:19PM +0800, Takashi Iwai wrote:
> At Tue, 8 Nov 2011 12:23:30 -0800,
> Linus Torvalds wrote:
> > 
> > Hmm, I don't know what caused this to trigger, but I'm adding both the
> > i915 people and the HDA people to the cc, and they can fight to the
> > death about this in the HDMI Thunderdome.
> 
> It must be the new addition of ELD-passing code.

Yes, it's my fault.

> Fengguang, can the drm or i915 driver check whether ELD is changed or
> not?  Writing ELD at each time even when unchanged confuses the audio
> side, as if the monitor is hotplugged.

It's sure possible to mask out the extra events.
I'll work out a patch tomorrow.

> > Guys: One.. Two.. Three.. FIGHT!
> 
> Round two!

Three to fight!

Thanks,
Fengguang

> > On Tue, Nov 8, 2011 at 6:55 AM, Nick Bowler <nbowler@...iptictech.com> wrote:
> > >
> > > Mode switches are very noisy on an Intel G45 in 3.2-rc1:
> > >
> > >  HDMI hot plug event: Codec=3 Pin=3 Presence_Detect=1 ELD_Valid=1
> > >  HDMI status: Codec=3 Pin=3 Presence_Detect=1 ELD_Valid=1
> > >  HDMI: detected monitor W2253 at connection type HDMI
> > >  HDMI: available speakers: FL/FR
> > >  HDMI: supports coding type LPCM: channels = 2, rates = 32000 44100 48000, bits = 16 20 24
> > >
> > > These lines get printed every single switch; previously only a single
> > > line was printed once at boot (the "HDMI status" line).
> > >
> > > Cheers,
> > > --
> > > Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)
> > >
> > 
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