Re: sound stopped working after upgrade

[<briand@aracnet.com>]

On Mon, 3 Aug 2015 09:16:16 -0700
Mike Izbicki <mike@izbicki.me> wrote:

> 
> I also just ran the `alsaloop` program, which gave the following
> output not related to /dev/dsp:
> ```
> ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
> playback hw:0,0 open error: No such file or directory
> Loopback initialization failure.
> ```

sure looks like a device not presest error.  that could still be that the right module isn't getting loaded.  but how to figure that out i'm not sure.

> >
> > Do they show that the channels are unmuted ?
> 
> Yes

ok . i get caught by that one all the time :-(

> 
> > Do you have 1 and only 1 audio "sink" ? If not you may have a problem with pulseaudio not sending audio to the correct sink.
> 
> How do I check this?  When I run alsamixer and hit F6 to select the
> sound card I get two options: default and "enter device name".

well i've done just the way you did- see if alsamixer allows selection of more than one device.

also too. 

aplay -L
pacmd list-sinks

> 
> > Also check dmesg for any references to audio devices.
> 
> Running `dmesg | grep -i audio` gives no output.  (The -i makes grep
> case insensitive.)
> 

well, sorry to say I don't have any other ideas.  I have provided a list of all the modules loaded in my system just for reference.

generally the on-board audio chipsets are not too much trouble.

i guess you're just lucky.

Brian

snd_usb_audio         135354  2 
snd_usbmidi_lib        23388  1 snd_usb_audio
snd_rawmidi            26806  1 snd_usbmidi_lib
snd_seq_device         13132  1 snd_rawmidi
snd_hda_codec_hdmi     45118  1 
snd_hda_codec_realtek    67127  1 
snd_hda_codec_generic    63181  1 snd_hda_codec_realtek
snd_hda_intel          26327  8 
snd_hda_controller     26646  1 snd_hda_intel
snd_hda_codec         104463  5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
snd_hwdep              13148  2 snd_usb_audio,snd_hda_codec
snd_pcm                88662  5 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
snd_timer              26614  1 snd_pcm
snd_mixer_oss          22042  1 
snd                    65244  31 snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_rawmidi,snd_hda_codec_generic,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_mixer_oss
soundcore              13026  3 snd,snd_hda_codec
usbcore               195340  6 snd_usb_audio,snd_usbmidi_lib,ehci_hcd,ehci_pci,usbhid,xhci_hcd