This also affects me. Sometime jbd2 just freeze my laptop for 5 minutes. CPU usage is mostly sy(stem) in "top" output. Look the attached screenshot.
** Attachment added: "top output" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/607560/+attachment/1741641/+files/Screenshot.png -- jbd2 writing block every 5 - 10 seconds, preventing disk spin-down and making noise https://bugs.launchpad.net/bugs/607560 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
