I've pasted my debug log here : http://pastebin.com/m15aa14a0 The result is kind of chinese for me :) Here is what I did. Before shutting down my system I set up default recording card in pavucontrol to "Intel" soundcard and "Line In". I want my system to fix with this as default. Line 2527 : I open pavucontrol to see if default is still "Intel" "Line In". But I see that it's selected to "Intel" "microphone1". Then I change it back to "Line In" (line 2585) There are also weird things between lines 550 and 1150 (lots of "failed"). Thanks :) Le jeudi 11 f?vrier 2010 ? 02:01 +0100, Lennart Poettering a ?crit : > On Wed, 10.02.10 18:11, Daniel Chen (seven.steps at gmail.com) wrote: > > > > > On Wed, Feb 10, 2010 at 5:02 PM, Lennart Poettering > > <lennart at poettering.net> wrote: > > > Hmm, my educated guess is that some weird suspend script might > > > unload some device/driver on suspend and reload it afterwards. In PA > > > this might cause a different default device to be chosen. > > > > To clarify, Ubuntu does not unload sound drivers for suspend-to-*. > > Maybe a sysfs driver bind/unbind? > > I guess the debug logs should tell us more. > > Lennart >