[alsa-devel] alsactl restore: unknown hardware: ymf724f

Jaroslav Kysela perex at perex.cz
Thu Feb 25 09:25:28 CET 2010

On Thu, 25 Feb 2010, Angel Tsankov wrote:

> Hello,
> I run 'alsactl restore' on a machine with 2 sound cards -- a built-in
> Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev
> 02) and a non-built-in Yamaha Corporation YMF-724F [DS-1 Audio
> Controller] (rev 03) -- and get the following message:
> Unknown hardware: "YMF724F" "SigmaTel STAC9700,83,84" "AC97a:83847600"
> "0x1073" "0x000d"
> Hardware is initialized using a guess method
> As a consequence the volume levels of the Yamaha card do not get
> restored to the levels stored in /etc/asound.state.  The volume levels
> of the built-in card however are properly restored.  The asound.state
> file has been created by executing 'alsactl store'.
> The kernel has been built with support for ALSA.  I've built and
> installed the kernel modules for both cards (not the ones in the
> alsa-driver package but those that come with kernel version
> Any ideas why alsactl cannot find the hardware it has previously
> identified as "YMF724F", "SigmaTel STAC9700,83,84", and so on?

The logic of alsactl is to restore the state from /etc/asound.state if it 
is valid. It seems like the set_controls() function in alsactl/state.c 
returns an error code for a reason.

Could you try to compile the latest alsa-utils snapshot 
(http://www.alsa-project.org/snapshot/) and run './alsactl -d restore' in 
alsa-utils/alsactl directory? A warning (fail reason) should be printed.


Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.

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