Dear Jasper, Sorry I took so long to answer. I tried your suggestion for speaker-test but got the following:
///////////////////////////////////////////////////////////// # speaker-test -D hw:1,0 -t sine -f 440 -c 2 speaker-test 1.0.23 Playback device is hw:1,0 Stream parameters are 48000Hz, S16_LE, 2 channels Sine wave rate is 440.0000Hz Rate set to 48000Hz (requested 48000Hz) Buffer size range from 64 to 16384 Period size range from 32 to 8192 Using max buffer size 16384 Periods = 4 was set period_size = 4096 was set buffer_size = 16384 0 - Front Left Write error: -5,Input/output error xrun_recovery failed: -5,Input/output error Transfer failed: Operation not permitted //////////////////////////////////////////////////////////// The only file I found in /etc/modprobe.d that isn't devoted to blacklisting was alsa-base.com. But there is no info entry for that file, so I don't know how to proceed with that. In /proc/asound there are a number of files and directories that deal with sound, but all of them are 'read only', even for root. The modules file contains two entries for sound drivers, both of them being for snd-hda-intel. If I try to run 'modprobe -r snd-hda-intel' I get that it is in use, so maybe my card 0 is satisfied with that driver. Unloading the driver by putting an option in alsa-base.conf with an index of -2 and rebooting turns off the system beeps ( which have always worked). Since the module seems to be determined by the entries in /proc/asound/modules, which is apparently unmodifiable, even by root, I can't test out the other candidate driver, snd-hda-codec-ca0110 Does anyone have an idea how to proceed?
