Pankaj Jangid <pan...@codeisgreat.org> writes: > When I boot system afresh, the card is visible in the ‘alsamixer’ and in > Gnome settings as well. Shown as “Blue” S/PDIF input and output > devices. But when system wakes up from sleep (suspended), it doesn’t > show the devices. > > However, ‘lsusb’ shows it and ‘/proc/asound/cards’ has an entry. But > these devices (mic and speaker) are not taking any input or producing > sound. Because they are not visible to Gnome and ‘alsamixer’. > > pankaj@anant:~$ lsusb > ... > Bus 001 Device 003: ID 046d:0ab7 Logitech, Inc. Blue Microphones > ... > pankaj@anant:~$ cat /proc/asound/cards > ... > 3 [Microphones ]: USB-Audio - Blue Microphones > Generic Blue Microphones at usb-0000:2a:00.1-2, high > speed > ...
I am trying to make it work; so here is the update. I tried to experiment with my machine and found that if I plug-out and plug-in the USB sound card again, it is not shown by "aplay -l" command as normal user. But when I do "sudo aplay -l" it lists the USB device. But I am part of "audio" group. "groups" command output: --8<---------------cut here---------------start------------->8--- ankaj@anant:~$ groups pankaj cdrom floppy sudo audio dip video plugdev netdev bluetooth scanner docker --8<---------------cut here---------------end--------------->8--- I don’t know what other configuration is required to list my card using "aplay -l" as a normal user? It lists the card when I reboot the machine. But not when I plug-out and plug-in again. Any hints for this? This could be root cause of my original problem i.e. no sound after sleep and wake-up.