Same issue on 2.6.28-15-generic (x64_64). System is a Lenovo Thinkpad R500. $ uname -a Linux dragon 2.6.28-15-generic #48-Ubuntu SMP Wed Jul 29 08:53:35 UTC 2009 x86_64 GNU/Linux
$ grep 'model name' /proc/cpuinfo model name : Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz model name : Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz $ lspci | grep Display 00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 9.04 Release: 9.04 Codename: jaunty The issue appears a bit after boot. Grepping kern.log and kern.log*.gz shows it happens between 18 minutes after boot and 16 hours after boot (in that case the system had been suspended most of the time). Sometimes the issue doesn't show up at all, but I often can't have the computer on for very long. The slowdown seems to take quite a long time to happen, often 10 or 20 minutes between each message. Due to needing to use the laptop I have rebooted the system before it reached the "freeze" point. $ grep 'CE: hpet increasing' /var/log/kern.log Aug 18 15:34:39 dragon kernel: [ 1730.000181] CE: hpet increasing min_delta_ns to 15000 nsec Aug 18 17:23:06 dragon kernel: [ 8237.000181] CE: hpet increasing min_delta_ns to 22500 nsec $ zgrep 'CE: hpet increasing' /var/log/kern.log*.gz /var/log/kern.log.1.gz:Aug 8 12:30:23 dragon kernel: [47063.324131] CE: hpet increasing min_delta_ns to 15000 nsec /var/log/kern.log.1.gz:Aug 8 12:41:31 dragon kernel: [47731.328128] CE: hpet increasing min_delta_ns to 22500 nsec /var/log/kern.log.1.gz:Aug 8 17:51:33 dragon kernel: [60907.304634] CE: hpet increasing min_delta_ns to 33750 nsec /var/log/kern.log.1.gz:Aug 11 16:25:07 dragon kernel: [ 3228.519471] CE: hpet increasing min_delta_ns to 15000 nsec /var/log/kern.log.3.gz:Jul 29 13:54:22 dragon kernel: [ 7023.052581] CE: hpet increasing min_delta_ns to 15000 nsec /var/log/kern.log.3.gz:Jul 31 15:26:47 dragon kernel: [14533.853801] CE: hpet increasing min_delta_ns to 15000 nsec /var/log/kern.log.3.gz:Jul 31 16:22:44 dragon kernel: [17891.160635] CE: hpet increasing min_delta_ns to 22500 nsec /var/log/kern.log.4.gz:Jul 25 23:31:12 dragon kernel: [ 1130.392139] CE: hpet increasing min_delta_ns to 15000 nsec Haven't yet tried any of the listed workarounds. -- lockups with default (hpet) clocksource on 2.6.27-2-generic 64-bit https://bugs.launchpad.net/bugs/270798 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
