'Twas brillig, and Daniel Chen at 02/06/10 15:36 did gyre and gimble:
> On Wed, Jun 2, 2010 at 10:17 AM, Bill Cox <waywardgeek at gmail.com> wrote:
>> Blind users of Ubuntu Lucid, and Vinux 3.0, are reporting that on many
>> machines, volume is muted at the initial boot, both for the LiveCD and
>
> For Ubuntu, do you mean that the volume setting at the gdm greeter is
> both muted and zero? Does Vinux use gdm, and if yes, does the previous
> question resolve to "both muted and zero"?
>
>> Naturally, the first suggestion I heard from a blind developer was to
>> disable PulseAudio's volume-restore function, as this seems related to
>
> Indeed that's a pretty gross hack.
>
>> problems, rather than disable functionality. Apparently these
>> problems are due to various problems with various sound cards and
>> drivers. What would I need to change to detect and resolve this
>> situation?
>
> Find where in the boot sequence the default card's volume setting is
> being twiddled to muted and zero. The culprits are:
>
> via the alsa-utils initscript called by the udev rule responsible; see
> the start stanza and note the alsactl restore;
>
> via the greeter's saved sink setting.
Does Ubuntu use the alsa provided init db ("alsactl init 0" - where 0 is
card number IIRC) or it's own system? I seem to recall it had it's own
system at some point, but not really sure (either if I'm remembering
correctly or if it's still used). Perhaps alsactl init 0 will help?
Col
--
Colin Guthrie
gmane(at)colin.guthr.ie
http://colin.guthr.ie/
Day Job:
Tribalogic Limited [http://www.tribalogic.net/]
Open Source:
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PulseAudio Hacker [http://www.pulseaudio.org/]
Trac Hacker [http://trac.edgewall.org/]
