no sound after suspend/resume

Question

I have no audio on lubuntu 12.04 after resuming from suspend. I tried

sudo alsa force-reload

to no avail. Sound works after reboot. Please help.

Does `sudo alsa force-reload` output anything? It might help to get some more information about your system, like your sound card: `lspci | grep -i audio` — zerwas, May 05 '13 at 19:05
It's really sad that it's almost 3 years later and this is still an issue (i3-5010u brix on Ubuntu 15.04). I usually shut down, and I'm on an SSD so a full reboot is about 10-15 seconds, but having to re-open what I happened to have open isn't fun. This is on my HTPC, if it were my desktop it would really piss me off. — Tracker1, Aug 12 '15 at 04:29
Upvoted because **`sudo alsa force-reload`** solved my problem. Thanks! — Zaz, Mar 23 '17 at 00:41

score 5 · Answer 1 · edited Apr 13 '17 at 12:23

For some systems it is necessary to kill the pulseaudio process and prevent it from re-loading before restarting ALSA. If the following procedure works, it can be automated.

Set up Pulseaudio so it does not respawn automatically:

mkdir ~/.pulse
echo "autospawn = no" >> ~/.pulse/client.conf

Suspend your computer and wake him up
Restart ALSA:
```
sudo alsa force-reload
```
Start pulseaudio:
```
pulseaudio --start
```

To revert the changes, delete the file ~/.pulse/client.conf

score 3 · Answer 2 · answered Mar 23 '14 at 21:10

After consulting some posts, what I've done to get mine to work again:

Set pulseaudio not to respawn by creating config file at home directory:
```
mkdir ~/.pulse
echo "autospawn = no" >> ~/.pulse/client.conf
```
Create a file (50alsa) to automate after system suspend.
```
sudo gedit /etc/pm/sleep.d/50alsa
```

Add the following to the file. Notice 'pulseaudio --kill' added.

case "$1" in
        hibernate|suspend)
                # Stopping is not required
                ;;
        thaw|resume)
                pulseaudio --kill                
                /sbin/alsa force-reload
                pulseaudio --start
                ;; 
        *) exit $NA
                ;;
esac

score 2 · Answer 3 · edited Sep 19 '12 at 08:01

2

Try pressing CTRL+ALT+F1 to change tty screens then press CTRL+ALT+F7 to go back to desktop.

This sometimes brings back sound but failing that, change screen resolution and change it back for a different fix. This works for HDMI audio as well.

edited Sep 19 '12 at 08:01

Peachy

7,077
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answered Sep 19 '12 at 07:43

TenPlus1

29
1

This worked for me, while I got disappointed after applying other solutions. – hamidi Dec 27 '21 at 04:19

score 1 · Answer 4 · answered Apr 29 '17 at 10:43

1

I tried this, but that didn't help.

To solve this without restart or another suspend, I solved it with simply

pulseaudio --kill
pulseaudio --start

answered Apr 29 '17 at 10:43

rubo77

31,573
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score 0 · Answer 5 · answered Oct 25 '16 at 02:25

0

Try running

pulseaudio -k && sudo alsa force-reload

answered Oct 25 '16 at 02:25

steoiatsl

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no sound after suspend/resume

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