My duplicate of this appears linked to the network, not to sound, and in particular when the system goes into hibernation (when I close the lid), although it reconnects to wireless net when I reopen the lid. Only occurs once after each reboot (subsequent hibernations do not reproduce it without a reboot), and appears to have vanished (for now) when I changed to fixed IP instead of DHCP. Once, I saw it reconnect to wireless after unhibernate but not get an IP address (remained at 0.0.0.0), but I've not been able to reproduce that. HTH. Laptop is Acer Aspire 5740G.
My duplicate of this appears linked to the network, not to sound, and in particular when the system goes into hibernation (when I close the lid), although it reconnects to wireless net when I reopen the lid. Only occurs once after each reboot (subsequent hibernations do not reproduce it without a reboot), and appears to have vanished (for now) when I changed to fixed IP instead of DHCP. Once, I saw it reconnect to wireless after unhibernate but not get an IP address (remained at 0.0.0.0), but I've not been able to reproduce that. HTH. Laptop is Acer Aspire 5740G.