I have never had a sound problem in years of using Linux, but it finally happened to me after patching my system. It was working fine before, but now I have no sound and no speaker icon in my system tray.
I ran this command
su -c ‘speaker-test -Dplug:front -c2 -l5 -twav’
, but did not hear anything.
Here is the output:
speaker-test 1.0.16
Playback device is plug:front
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 16 to 16384
Period size range from 8 to 8192
Using max buffer size 16384
Periods = 4
was set period_size = 4096
was set buffer_size = 16384
0 - Front Left
1 - Front Right
Time per period = 2.737711
0 - Front Left
1 - Front Right
Time per period = 3.071437
0 - Front Left
1 - Front Right
Time per period = 2.901649
0 - Front Left
1 - Front Right
Time per period = 3.071864
0 - Front Left
1 - Front Right
Time per period = 3.071255
Very strange. I will think twice next time before updating my system. This is the first (and possibly the last) time I have ever tried using the automatic update program on my system.
There may very well be a bug in the latest updates.