Arch Linux

indianahorst

Member

Registered: 2008-08-23

Posts: 133

System doesn't suspend with USB Soundcard

Hello,

I am confronted with a strange problem: since a few days I'm using a external USB soundcard (Behringer UCA 222) instead of the onboard sound. The soundcard uses the module  snd_usb_audio.

When the soundcard is connected and I do a systemctl suspend or systemctl hibernate, the system goes down, the harddisk stops spinning, and immediately the disk restarts and the system wakes up again.
Without the soundcard connected, the system goes properly into suspend/hibernation mode.

I have already tried to adapt the sleep hooks:

[Unit]
Description=User suspend actions
Before=sleep.target

[Service]
User=%I
Type=forking
Environment=DISPLAY=:0
ExecStart=/bin/modprobe -r snd_usb_audio

[Install]
WantedBy=sleep.target

and

[Unit]
Description=User resume actions
After=suspend.target

[Service]
User=%I
Type=simple
ExecStart=/bin/modprobe snd_usb_audio

[Install]
WantedBy=suspend.target

but it doesn't change anything.

Any help would be appreciated!

Last edited by indianahorst (2014-04-12 01:43:01)

MadTux

Member

Registered: 2009-09-20

Posts: 553

Re: System doesn't suspend with USB Soundcard

Do you use pm-utils? If yes, you could try to add the kernel module to the SUSPEND_MODULES as described here:

https://wiki.archlinux.org/index.php/Pm … figuration

indianahorst

Member

Registered: 2008-08-23

Posts: 133

Re: System doesn't suspend with USB Soundcard

No, I don't use pm-utils (not installed). pm-utils seem to be deprecated for systemd users.