I've experienced a problem which may be related to this but it is on a Sager NP2090, not NP2092. I've been able to run Hardy for months without the problem manifesting itself but for the past month or so I've experienced quasi-freezes on Hardy and the same on Intrepid. At this point, I'm pretty convinced that I did not do anything wrong and that there is a real bug somewhere.
All of my Ubuntu partitions are encrypted. If I let the kernel boot normally and issue: $ dd if=/dev/zero of=~/tmp/garbage bs=500M count=10 Pretty soon the system becomes unusable. The GUI freezes (applets no longer update their information) except for the mouse pointer which moves but with a huge lag. Keyboard response is also severely lagged as evidenced by the fact that it takes several seconds for a "CapsLock" toggle to register. Eventually the system gets out of that quasi-freeze but it takes a while. At the time the test is run, the following appears in the syslog: Nov 1 11:06:26 bodhi kernel: [ 608.405383] CE: hpet increasing min_delta_ns to 15000 nsec Nov 1 11:10:26 bodhi kernel: [ 848.045122] CE: hpet increasing min_delta_ns to 22500 nsec Nov 1 11:20:43 bodhi kernel: [ 1465.497279] CE: hpet increasing min_delta_ns to 33750 nsec Nov 1 11:36:14 bodhi kernel: [ 2396.253626] CE: hpet increasing min_delta_ns to 50624 nsec Nov 1 11:37:05 bodhi kernel: [ 2447.124177] CE: hpet increasing min_delta_ns to 75936 nsec Nov 1 12:31:06 bodhi kernel: [ 5688.448082] CE: hpet increasing min_delta_ns to 113904 nsec Nov 1 13:21:01 bodhi kernel: [ 8682.672764] CE: hpet increasing min_delta_ns to 170856 nsec In cases where the problem occurred by itself even after more than 5 minutes the system could still be hung. If I boot with clocksource=jiffies then the same command above the system is still responsive. The GUI does not freeze: the applets I use to report CPU usage and temperature continue to update as normal. The system is a bit laggy but still usable. Also, the "hpet increasing" messages are absent from the syslog. $ uname -a Linux bodhi 2.6.27-7-generic #1 SMP Thu Oct 30 04:12:22 UTC 2008 x86_64 GNU/Linux I'm suspecting the problems may be related because the NP2090's hardware is very similar to that of the NP2092 and the solution in either case is to set clocksource=jiffies Quentin, have you ever run into the "hpet increasing" message? Can you try the "dd" command above and see what happens without and with the clocksource=jiffies parameter? -- Hardy 64-bit beta and nightly alternate installation stalls https://bugs.launchpad.net/bugs/217849 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
