linux-kernel - Re: 2.6.29 regression: left audio channel broken after resume from suspend with Intel HDA

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <s5hr5z12jn5.wl%tiwai@suse.de>
Date:	Thu, 07 May 2009 14:16:14 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	ncunningham-lkml@...a.org.au
Cc:	Tino Keitel <tino.keitel@....de>, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org
Subject: Re: 2.6.29 regression: left audio channel broken after resume from suspend with Intel HDA

At Thu, 07 May 2009 21:54:40 +1000,
Nigel Cunningham wrote:
> 
> Hi.
> 
> On Thu, 2009-05-07 at 12:45 +0200, Takashi Iwai wrote:
> > The problem is that BIOS on your machine sets this pin both for
> > input and output.  Since it's set as input, the driver respects
> > the BIOS setup and skips to override.
> 
> 'scuse the ignorance, but this makes me ask: Are pins logically
> unrelated to jacks?

Yes, they are.

> I have a Dell M1530, and it has some jacks that can
> work as either inputs or outputs. Under M$, when I plug something in, a
> dialog box pops up asking me whether I connected a mic, line in or an
> output jack (I forget the details). Sounds like Tino's problem is what
> I'd expect from my BIOS. But I'm probably completely ignorant :)

The problem there is that the BIOS sets the current pin direction for
both input and output, but you can't play and record at the same time
on a jack.  It's not about the capability. 

BIOS is supposed to set all the pins properly ready for use, but it's
not so on Mac.


Takashi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/