Please remove all linux-backports-modules-alsa* and linux-alsa-driver-modules*, and verify that -19 has audible sound whereas -20 is not.
Alternately, dowload and boot a live cd of the most current daily-live Lucid desktop and reproduce this symptom.
Please remove all linux-backports -modules- alsa* and linux-alsa- driver- modules* , and verify that -19 has audible sound whereas -20 is not.
Alternately, dowload and boot a live cd of the most current daily-live Lucid desktop and reproduce this symptom.