Comment 71 for bug 882566

I tested this again today. No problems in Quantal live session using GUI.
Although, when I first time started to suspend by closing the lid, soon this sound problem could be heard for about a second before suspending advanced and the music stopped. It might be relevant, that during this first suspend stuff was read from DVD, which did not happen during following suspend tests.

So, then I woke up the machine and continued the testing.

Interesting was that after pressing Fn + F3 music jammed for five seconds. Fn+F3 should mean "Switch output display device", but actually there is not a second display attached to this laptop. The five seconds jam (both sound and graphical jam) occured every time those keys were pressed. The jam lasted for five seconds even if I pressed some keys or touched touchpad.

If I went to text based user interface (tty1) and pressed Fn+F3 then this jam was like before: it could last more than five seconds and was "randomly" repeated. On this occasion, touching touchpad or pressing something on the keyboard released the jam.

All the above is at least double checked today.

If I first did not suspend, the jams could not be started. Pressing Fn+F3 caused only a minor disturbance to music that was playing.

It might be relevant to point that iwl4965 Microcode SW error are detected as the jam starts. There is some syslog attached.

Just to mention, the Ubuntu graphics shown during loading the OS, is shown without disturbance/corruption when booting to Quantal.