[Bug] No sound in debian VM after upgrading to version 27.0.1 (58670)

E

EzraS2

Bit poster
In the previous v26 version the parallel drivers setup sound correctly in debain, since the v27 update, the sound driver and output inside the debain VM has been removed. Replaced with Dummy output.

VM: Debian Trixie.
Host: macOS 27, Macbook M4 Pro
Host sound device: Default.

Parallels driver re-installed did not resolve it.
 
I was also having issue with no sound in Ubuntu ARM64, but when i just tried again, the sound starting working. I don't know what changed.
 
RichardM16 said:
I was also having issue with no sound in Ubuntu ARM64, but when i just tried again, the sound starting working. I don't know what changed.
Click to expand...
Oh, i see, AirPods do not allow sound, but the MBP speakers do play sound from Ubuntu VM. That's why it seemed like it started working. So the problem is maybe Bluetooth sound devices.
 
Maybe it is related to this:
Below is the list of features that are no longer supported and have been removed in Parallels Desktop for Mac 27:
  • Shared Bluetooth functionality. Bluetooth devices (e.g., keyboards, mice, or game controllers) connected to your Mac will continue to work normally in virtual machines. Note: To connect a Bluetooth device directly to a virtual machine, consider using a USB Bluetooth dongle.
Click to expand...
 
Asking Claude Code about the issue

What I found
- Before the upgrade: the VM had an emulated Intel HDA sound controller. WirePlumber's saved volume settings (~/.local/state/wireplumber/default-routes) name alsa_card.pci-0000_00_01.0, and /var/lib/alsa/asound.state has a card named Intel.
- Now: that device is gone. lspci shows nothing at 00:01.0 and no audio controller of any kind. There's also no virtio sound device. So ALSA reports "no soundcards", and PipeWire can only offer "Dummy Output".
- Linux is fine.
- Your kernel (7.1.8) includes both drivers Parallels could use (snd-hda-intel and virtio_snd), and nothing in /etc/modprobe.d blocks them.
- PipeWire and WirePlumber are running normally.
- Parallels Tools updated to 27.0.2 cleanly on Sep 23.
 
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