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alsa-project / alsa-lib

The Advanced Linux Sound Architecture (ALSA) - library
GNU Lesser General Public License v2.1
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Unable to connect KEF X300A USB speakers #189

Closed simba-tlk closed 2 years ago

simba-tlk commented 2 years ago

I'm trying to use a pair of KEF X300A speakers. They work with aplay on Ubuntu 20.04 server, but fail on Ubuntu 18.04, 20.04 and 21.10 desktop.

Here is output from pulseaudio -vvv: pulse.log

And here is output from alsa-info.sh: alsa-info.txt

Anyone who know how to solve this issue? :)

perexg commented 2 years ago

It looks like a general USB issue. Check your kernel logs.

EDIT: Apparently, the USB device reconnects.

simba-tlk commented 2 years ago

It works on windows 10 and ubuntu 20.04 server without any problems, so think usb connection is ok.

Here is output from dmesg when pulseaudio isn't running: dmesg.log

perexg commented 2 years ago

There are a log of errors for usb-1.8 bus. It may be a problem somewhere in hardware or kernel or a timing issue (which is a bit problematic to debug). You may check the kernel version and report the issue at https://bugzilla.kernel.org or better using the distribution specific reporting system (all distributions modify kernels a bit). They'll work with you to resolve this issue.

simba-tlk commented 2 years ago

Ok, thanks! :)

perexg commented 2 years ago

Also, it may be worth to try to connect PC and speakers to one phase (one socket).

simba-tlk commented 2 years ago

They already are, and the speakers works on the same usb port if I pass it to windows 10 with virtualbox. :o