Re: sound stopped working after upgrade

[Mike Izbicki <mike@izbicki.me>]

The list of modules helped a bunch!  I modprobed them one-by-one and
after running `modprobe snd_hda_intel` a bunch of new devices showed
up and sound started working.

Thanks!

On Mon, Aug 3, 2015 at 12:00 PM,  <briand@aracnet.com> wrote:
> 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