Have same problem:
Sound works in all applications except browsers; firefox & chromium
Sound worked fine in Ubuntu 11.04, but stopped working in browsers following upgrade to Ubuntu 11.10.
kernel: 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:50:42 UTC 2011 i686 athlon i386 GNU/Linux
Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
"killall pulseaudio" made no difference
"alsamixer" surround set to 00 will not increase marked "shared"
Have same problem:
Sound works in all applications except browsers; firefox & chromium
Sound worked fine in Ubuntu 11.04, but stopped working in browsers following upgrade to Ubuntu 11.10.
kernel: 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:50:42 UTC 2011 i686 athlon i386 GNU/Linux
Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
"killall pulseaudio" made no difference
"alsamixer" surround set to 00 will not increase marked "shared"