[20:36] <deffrag> Hello! I've been noticing abnormal behavior in Ubuntu 12.04. My system's GUI and keyboard suddenly freezes but it doesn't freezes movement of mouse, audio playback and ssh access. I cannot click on anything, change to tty0-6, caps lock on/off gives no indication. I'm not able to understand this type of behavior. Can anyone help me identify the problems and fix them please?
[20:38] <deffrag> I'm faced with the problem again and currently I'm connected to the problem system from netbook via ssh. I can see top/htop giving an also increase/decrease volume using alsamixer. I don't know how it sounds or what I'm missing here ...
[20:39] <deffrag> ..I can see top/htop listing processes and can also increase/decrease... *
[20:40] <deffrag> But not able to get anything working directly on the problem system
[20:56] <JanC> deffrag: does the screen still update (e.g. the clock)?
[20:56] <deffrag> JanC: No, nothing really update.
[20:56] <deffrag> s
[20:56] <deffrag> Clock is 40 minutes behind
[20:58] <JanC> no heavy swapping going on?
[20:58] <deffrag> Sec, let me give you mem info
[20:58] <JanC> although 40 minutes is long
[20:59] <deffrag> System is still running as per top from ssh and I can only have cursor movement on the problem system
[20:59] <JanC> and most likely that would cause audio to stutter too
[20:59] <JanC> could be a graphics driver issue...
[21:00] <deffrag> No, no distortion at all. The music is playing as if nothing happened
[21:00] <JanC> or in theory also a compositor (compiz) issue, I suppose
[21:00] <deffrag> And the graphics card is disabled using bumblebee, as I'm using gfx with optimus
[21:01] <JanC> if this has anything to do with graphics, you probably better ask in #ubuntu-x (or on their mailing list)
[21:02] <deffrag> I forgot how to fetch MemInfo and SwapInfo parameters form commandline, somewhere in /sys/proc if I;m right
[21:03] <deffrag> $ cat /proc/meminfo 
[21:03] <deffrag> MemTotal:        6005648 kB
[21:03] <deffrag> MemFree:          215700 kB
[21:03] <deffrag> SwapTotal:       5235708 kB
[21:03] <deffrag> SwapFree:        4849064 kB
[21:04] <deffrag> .. in reply to what you asked initially about swapping
[21:04] <deffrag> If that help. Thanks, I'll try asking in #ubuntu-x
[21:34] <deffrag> JanC: With help from #bumblebee identified the issue to be very close to https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1015015
[21:34] <ubot2> Ubuntu bug 1015015 in xserver-xorg-video-intel "Xorg freezes once a day, mouse and SSH still works" [High,Incomplete]
[21:36] <JanC> deffrag: certainly sounds like an issue for the X team then
[21:36] <deffrag> Yes, thank you