Re: Fwd: Linux Kernel 5.12.10 Walkman USB DAC support issues

On Tue, Jul 27, 2021 at 12:37:28AM +0100, Razgriz375 (Neil) wrote:

Hello,

Since updating from 5.10.17, I have not been able to get my Walkman
A55 to work as a USB DAC with my device. My system specs are as
follows:

Surface Pro 4
Pop_OS 21.04 x86_64
Kernel 5.12.10-surface
CPU Intel i5-6300U
Mem 4GB

I can switch back to 5.10.17-surface which I have done and the USB DAC
starts working again. This issue has also been reported in
https://bbs.archlinux.org/viewtopic.php?id=264051&p=2

I'm pretty amateur at linux, but happy to help and provide more
information if required. I guess this is a niche issue as it's not
been reported as far as I can tell.

Desmg output is attached as your spam filter intercepted the raw
information in the email.

Kind regards,

Neil

[  109.668465] usb 1-1: USB disconnect, device number 2 
[  110.084429] usb 1-1: new high-speed USB device number 5 using xhci_hcd 
[  110.237963] usb 1-1: New USB device found, idVendor=054c, idProduct=0b8c, bcdDevice= 1.00 
[  110.237989] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=4 
[  110.238002] usb 1-1: Product: WALKMAN 
[  110.238011] usb 1-1: Manufacturer: Sony 
[  110.238019] usb 1-1: SerialNumber: 10458B55477916 
[  110.342104] usb 1-1: 1:7 : unsupported format bits 0x100000000 
[  110.343953] usbcore: registered new interface driver snd-usb-audio

Looks like you removed the device and then added it back?  And it says
the device is supported by the kernel now, what does not work properly?

thanks,

greg k-h