No sound, kmix indicates dummy output

Bug #674741 reported by Paul Abrahams
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)
Expired
Undecided
Unassigned

Bug Description

I've been regularly updating the alsa-driver package, and it appears to be quite unstable. Each update behaves differently than the previous one, it seems.

Here's what I have now, according to the Synaptic history:

linux-alsa-driver-modules-2.6.35-22-generic (2.6.35-22.201011071600) to 2.6.35-22.201011111600

Now I get no sound at all and kmix indicates only a single playback device: "dummy output". My sound chip is a VIA VT1708S, according to alsamixer. I cannot find anything about how to change from a dummy output to a real one. alsamixer shows nothing muted, and I get this behavior whether Independent HP is on or off.

I'm running Kubuntu Meerkat on an Asus K60I laptop.

Revision history for this message
Paul Abrahams (abrahams) wrote :
Revision history for this message
Paul Abrahams (abrahams) wrote :
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Paul Abrahams (abrahams) wrote :

I rebooted and the sound was working for perhaps half an hour, but then it died. alsamixer was running at the time, and a snapshot of alsamixer, showing the error messages, might be helpful. The error message began with "Connection to PulseAudio daemon closed".

Revision history for this message
Daniel T Chen (crimsun) wrote : Re: [Bug 674741] Re: No sound, kmix indicates dummy output

The daily driver builds can be (and sometimes should be expected to be)
unstable - they're bleeding-edge, tracking master HEAD of upstream sound-2.6
stable. It would be more helpful to attach alsa-info.sh and verbose pulse
output for each problematic session. (However, there is no need to attach
multiple examples/sessions per daily driver build.)

Revision history for this message
Marcus Tomlinson (marcustomlinson) wrote :

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

Changed in alsa-driver (Ubuntu):
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for alsa-driver (Ubuntu) because there has been no activity for 60 days.]

Changed in alsa-driver (Ubuntu):
status: Incomplete → Expired
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