I plan to buy ASUS Xonar U7 USB sound card but don't see drivers for Linux in the ASUS site. I don't see it in the ALSA supported cards page either (http://www.alsa-project.org/main/index.php/Matrix:Vendor-Asus). Does anyone know whether its supported in Linux?
I tried the Xonar U7 on Mint 16 (based on Ubuntu 13.10) and it works fine (I haven't tried multi-channel though). Absolutely no noise, the sound is perfect with
alsamixer v22.214.171.124 and
On 29th January the alsa-wiki page provided in the first post was updated, and now the Xonar U7 is supported. With the alsamixer is also possible to change the gain setting.
To fix the broken pipe error, add
options snd-usb-audio ignore_ctl_error=1 at the end of
sudo gedit /etc/modprobe.d/alsa-base.conf
options snd-usb-audio ignore_ctl_error=1, save and close.
press F6 and select "Xonar U7", now you can change the "Speaker Front" value to increase/decrease the headphone output gain.
To make the Xonar U7 analogic multichannel playback fully work on lubuntu, you need to do the following:
1- in file /etc/modprobe.d/alsa-base.conf, change the line options snd-usb-audio index=-2 to options snd-usb-audio index=0 in order to set the U7 as your default sound card
2-in home file /.config/openbox/lubuntu-rc.xml
set the volume keys with amixer lines such as: XF86AudioRaiseVolume: amixer -c 0 sset Speaker 3+ unmute XF86AudioLowerVolume: amixer -c 0 sset Speaker 3- unmute XF86AudioMute: amixer -c 0 sset Speaker toggle using the 'Speaker' control
Hope this will help :-)
The U7 soundcard is supported, yet I've noticed on my PC that the multimedia keys (configured to use amixer) to raise or lower the volume don't work as they do with my internal xonar DX. I wonder if it's a conflict with this one already installed in my pc which (unlikely) could be resolved by removing or disabling the DX...