Xilinx Wiki Zynq Ultra. Document History. Description of Revisions Sept 1. Upender Cherukupally. Ubuntu usb sound card sometimes recognized and sometimes not at boot. Up vote 3 down vote favorite. Ubuntu drivers audio usb. Creative Sound Blaster 5. USB(Sound card)sudo gedit /etc/pulse/daemon. This enables 6 channels (5. If you plug the sound card after fresh system boot, only stereo.
I have a linux ubuntu 12.04 server machine which works with an usb sound card. When rebooting the machine, sometimes the usb sound card is recognized and sometimes not, I cannot figure out a reason for this. I understand when the sound card is recognized because when I issue the command: cat /proc/asound/modules I can see listed or not the line snd_usb_audio. Analyzing the /var/log/kernel.log I can see sometimes (when it works) kernel: [ 6.236564] usbcore: registered new interface driver snd-usb-audio and other times (when it is not recognized and listed): kernel: [ 7.126855] snd-usb-audio: probe of 2-1.2:1.0 failed with error -5 kernel: [ 7.126876] usbcore: registered new interface driver snd-usb-audio Does anybody know how to ensure that the usb sound card is always recognized?
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