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I run Arch Linux using Systemd and ALSA on a Thinkpad X200 and I have an USB sound card connected, which I use for audio output.

The audio is fine until I suspend my machine with $ systemctl suspend. After resuming, the USB sound card’s audio output is broken and irregularly produces crackling noises.

What is possibly causing this? How can I fix this?

Plugging the USB sound card in and out neither produces this issue nor does it solve it. I don’t have a ~/.asoundrc.


Some information. Here is the dmesg output

Here’s my kernel:

$ uname -srvo
Linux 4.18.6-gnu-1 #1 SMP PREEMPT Sat Sep 8 14:43:46 UTC 2018 GNU/Linux

The USB sound card is actually a DAC, namely FiiO E10. Here’s how ALSA sees it:

$ aplay --list-devices
…
card 1: Audio [DigiHug USB Audio], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
…

The sound driver I use for the card is apparently snd_usb_audio according to $ lsmod | grep snd.

Let me know if you need more information and output.

I run Arch Linux using Systemd and ALSA on a Thinkpad X200 and I have an USB sound card connected, which I use for audio output.

The audio is fine until I suspend my machine with $ systemctl suspend. After resuming, the USB sound card’s audio output is broken and irregularly produces crackling noises.

What is possibly causing this? How can I fix this?

Plugging the USB sound card in and out neither produces this issue nor does it solve it. I don’t have a ~/.asoundrc.


Some information. Here is the dmesg output

Here’s my kernel:

$ uname -srvo
Linux 4.18.6-gnu-1 #1 SMP PREEMPT Sat Sep 8 14:43:46 UTC 2018 GNU/Linux

The USB sound card is actually a DAC, namely FiiO E10. Here’s how ALSA sees it:

$ aplay --list-devices
…
card 1: Audio [DigiHug USB Audio], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
…

The sound driver I use for the card is apparently snd_usb_audio according to $ lsmod | grep snd.

Let me know if you need more information and output.

I run Arch Linux using Systemd and ALSA on a Thinkpad X200 and I have an USB sound card connected, which I use for audio output.

The audio is fine until I suspend my machine with $ systemctl suspend. After resuming, the USB sound card’s audio output is broken and irregularly produces crackling noises.

What is possibly causing this? How can I fix this?

Plugging the USB sound card in and out neither produces this issue nor does it solve it. I don’t have a ~/.asoundrc.


Some information. Here is the dmesg output

Here’s my kernel:

$ uname -srvo
Linux 4.18.6-gnu-1 #1 SMP PREEMPT Sat Sep 8 14:43:46 UTC 2018 GNU/Linux

The USB sound card is actually a DAC, namely FiiO E10. Here’s how ALSA sees it:

$ aplay --list-devices
…
card 1: Audio [DigiHug USB Audio], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
…

The sound driver I use for the card is apparently snd_usb_audio according to $ lsmod | grep snd.

1
source | link

Crackling sound with ALSA from an USB sound card after resuming from suspend

I run Arch Linux using Systemd and ALSA on a Thinkpad X200 and I have an USB sound card connected, which I use for audio output.

The audio is fine until I suspend my machine with $ systemctl suspend. After resuming, the USB sound card’s audio output is broken and irregularly produces crackling noises.

What is possibly causing this? How can I fix this?

Plugging the USB sound card in and out neither produces this issue nor does it solve it. I don’t have a ~/.asoundrc.


Some information. Here is the dmesg output

Here’s my kernel:

$ uname -srvo
Linux 4.18.6-gnu-1 #1 SMP PREEMPT Sat Sep 8 14:43:46 UTC 2018 GNU/Linux

The USB sound card is actually a DAC, namely FiiO E10. Here’s how ALSA sees it:

$ aplay --list-devices
…
card 1: Audio [DigiHug USB Audio], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
…

The sound driver I use for the card is apparently snd_usb_audio according to $ lsmod | grep snd.

Let me know if you need more information and output.