Time to take action - US-carrier whitelisting (Verizon and AT&T) in General Discussion Posted February 26 · Edited February 26 by claude0001 1 hour ago, VaZso said: However, I don't know why there are a plenty of capture / playback devices there Indeed. I cannot use any of the standard ALSA tools like aplay for doing anything with these devices. I am testing from a rooted GNU/Linux chroot. In contrast, if I connect a standard USB sound device, I can control it normally via ALSA. So I assume that proprietary driver is just behaving differently. Edit: Better be careful when messing with the sound interfaces directly. I remember that, on the N900, one could break the internal speakers that way (as one was able to bypass some software filters in the driver, I think).