Further tests:
If I use a Logitech USB headphone set (usb-audio), and use OSS emulation, I do get sound. No other combination appears to give sound (other an a couple of seconds, then blockage).
Further tests:
If I use a Logitech USB headphone set (usb-audio), and use OSS emulation, I do get sound. No other combination appears to give sound (other an a couple of seconds, then blockage).