I also experience the same bug on notebook with i945 chipset with Ubuntu Jaunty. Symptoms are the same - at some point system becomes irresponsive, disk activity is such high that the only option is to power-off the notebook.
As I was experiencing it rather frequently I had open consoles with dstat, htop and atop running. dstat show that activity is completely "read", not "write". htop shows load average near to 25/18/8 with lot of processed in "D" state (waiting for IO, AFAIK). Memory is about 500 Mb consumed (+1Gb cache) of 1.5 Gb total. Atop show me that there were *several* programs fighting to read the disk - the most prominent was okular (actually right in this case bug was triggered by fast listing the 400 page 2Mb pdf), but firefox, thunderbird and X were also having a high read activity! After killing okular (took a minute to quit from htop to bash) normal desktop responsivenes returned. But bug is *not* in okular - different times different programs trigger this behaviour. My systems is jaunty, i386 arch. The behaviour is the same with kde4.2.2 and kde4.2.3 (installed from kubuntu-experimental ppa). I upgraded the xserver-xorg-video-intel from xorg-edgers ppa - still the same. And I did not not touch the xorg - right now it is UXA, see the attached xorg.log. I don't know the default for pure jaunty. PS now i know for sure - it is not a beagle to blame, as i expected ** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/27007852/Xorg.0.log -- High load average, disk read, no apparent reason - 2.6.28-11 https://bugs.launchpad.net/bugs/367377 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
