I continue to have this problem. I think it is related to putting my laptop on standby. So far the standby mode has been far more reliable than the previous Ubuntu version (Hardy LTS would often not wake up at all), but on some startups I get flooded with messages at the console ("bad scheduling from the idle thread!"), and that appears to be flooding the logs.

This issue is happening right now. When relatively idle and running top, the top [user:commands usage] are { root:dd 61%, klog:klogd 42%, syslog:syslogd 25% } ... which could be expected from the rate at which the logs fill up.

I'm running a Dell M1330 with Intel(R) Core(TM)2 Duo Processor T9300 - 2.5GHz, 6MB Cache, 800 MHz FSB.

I'll provide lspci output and the last 50 lines of the three log files that have been giving me difficulty. Hopefully this information will be useful to someone in identifying this issue. Again, I'm available to provide any other information necessary on request.

~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c)
00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 0c)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 02)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f2)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02)
01:00.0 VGA compatible controller: nVidia Corporation GeForce 8400M GS (rev a1)
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
03:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
03:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
03:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev ff)
09:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express (rev 02)
0c:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
0d:00.0 Multimedia controller: Philips Semiconductors Device 7160 (rev 03)

/var/log# tail -n50  kern.log
Nov 17 22:55:26 cams-laptop kernel: [71562.659679]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:55:26 cams-laptop kernel: [71562.659682]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:55:26 cams-laptop kernel: [71562.659685]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:55:26 cams-laptop kernel: [71562.659688]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:55:26 cams-laptop kernel: [71562.659690]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:55:26 cams-laptop kernel: [71562.659693]  [<c014d3bb>] ? sched_clock_tick+0x7b/0xb0
Nov 17 22:55:26 cams-laptop kernel: [71562.659696]  [<c0153dcc>] ? tick_nohz_stop_idle+0x5c/0x70
Nov 17 22:55:26 cams-laptop kernel: [71562.659699]  [<c0153e15>] ? tick_nohz_restart_sched_tick+0x35/0x180
Nov 17 22:55:26 cams-laptop kernel: [71562.659702]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:55:26 cams-laptop kernel: [71562.659705]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:55:26 cams-laptop kernel: [71562.659708]  =======================
Nov 17 22:55:26 cams-laptop kernel: [71562.659772] bad: scheduling from the idle thread!
Nov 17 22:55:26 cams-laptop kernel: [71562.659774] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:55:26 cams-laptop kernel: [71562.659775]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:55:26 cams-laptop kernel: [71562.659778]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:55:26 cams-laptop kernel: [71562.659781]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:55:26 cams-laptop kernel: [71562.659784]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:55:26 cams-laptop kernel: [71562.659786]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:55:26 cams-laptop kernel: [71562.659789]  [<c014d3bb>] ? sched_clock_tick+0x7b/0xb0
Nov 17 22:55:26 cams-laptop kernel: [71562.659792]  [<c0153dcc>] ? tick_nohz_stop_idle+0x5c/0x70
Nov 17 22:55:26 cams-laptop kernel: [71562.659795]  [<c0153e15>] ? tick_nohz_restart_sched_tick+0x35/0x180
Nov 17 22:55:26 cams-laptop kernel: [71562.659799]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:55:26 cams-laptop kernel: [71562.659801]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:55:26 cams-laptop kernel: [71562.659804]  =======================
Nov 17 22:55:26 cams-laptop kernel: [71562.659821] bad: scheduling from the idle thread!
Nov 17 22:55:26 cams-laptop kernel: [71562.659824] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:55:26 cams-laptop kernel: [71562.659825]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:55:26 cams-laptop kernel: [71562.659828]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:55:26 cams-laptop kernel: [71562.659831]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:55:26 cams-laptop kernel: [71562.659834]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:55:26 cams-laptop kernel: [71562.659836]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:55:26 cams-laptop kernel: [71562.659839]  [<c014d3bb>] ? sched_clock_tick+0x7b/0xb0
Nov 17 22:55:26 cams-laptop kernel: [71562.659842]  [<c0153dcc>] ? tick_nohz_stop_idle+0x5c/0x70
Nov 17 22:55:26 cams-laptop kernel: [71562.659845]  [<c0153e15>] ? tick_nohz_restart_sched_tick+0x35/0x180
Nov 17 22:55:26 cams-laptop kernel: [71562.659849]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:55:26 cams-laptop kernel: [71562.659851]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:55:26 cams-laptop kernel: [71562.659854]  =======================
Nov 17 22:55:26 cams-laptop kernel: [71562.659920] bad: scheduling from the idle thread!
Nov 17 22:55:26 cams-laptop kernel: [71562.659922] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:55:26 cams-laptop kernel: [71562.659924]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:55:26 cams-laptop kernel: [71562.659926]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:55:26 cams-laptop kernel: [71562.659929]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:55:26 cams-laptop kernel: [71562.659932]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:55:26 cams-laptop kernel: [71562.659934]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:55:26 cams-laptop kernel: [71562.659937]  [<c014d3bb>] ? sched_clock_tick+0x7b/0xb0
Nov 17 22:55:26 cams-laptop kernel: [71562.659941]  [<c0153dcc>] ? tick_nohz_stop_idle+0x5c/0x70
Nov 17 22:55:26 cams-laptop kernel: [71562.659943]  [<c0153e15>] ? tick_nohz_restart_sched_tick+0x35/0x180
Nov 17 22:55:26 cams-laptop kernel: [71562.659947]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:55:26 cams-laptop kernel: [71562.659949]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:55:26 cams-laptop kernel: [71562.659952]  =======================

/var/log# tail -n50  messages
Nov 17 22:59:19 cams-laptop kernel: [71796.106518]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:59:19 cams-laptop kernel: [71796.106521]  =======================
Nov 17 22:59:19 cams-laptop kernel: [71796.108755] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:59:19 cams-laptop kernel: [71796.108757]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:59:19 cams-laptop kernel: [71796.108760]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:59:19 cams-laptop kernel: [71796.108762]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.108765]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:59:19 cams-laptop kernel: [71796.108767]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:59:19 cams-laptop kernel: [71796.108770]  [<c014a72d>] ? enqueue_hrtimer+0x7d/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.108773]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:59:19 cams-laptop kernel: [71796.108776]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:59:19 cams-laptop kernel: [71796.108778]  =======================
Nov 17 22:59:19 cams-laptop kernel: [71796.113715] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:59:19 cams-laptop kernel: [71796.113716]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:59:19 cams-laptop kernel: [71796.113720]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:59:19 cams-laptop kernel: [71796.113722]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.113724]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:59:19 cams-laptop kernel: [71796.113727]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:59:19 cams-laptop kernel: [71796.113730]  [<c014a72d>] ? enqueue_hrtimer+0x7d/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.113733]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:59:19 cams-laptop kernel: [71796.113735]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:59:19 cams-laptop kernel: [71796.113738]  =======================
Nov 17 22:59:19 cams-laptop kernel: [71796.118749] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:59:19 cams-laptop kernel: [71796.118750]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:59:19 cams-laptop kernel: [71796.118754]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:59:19 cams-laptop kernel: [71796.118756]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.118759]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:59:19 cams-laptop kernel: [71796.118761]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:59:19 cams-laptop kernel: [71796.118764]  [<c014a72d>] ? enqueue_hrtimer+0x7d/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.118767]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:59:19 cams-laptop kernel: [71796.118769]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:59:19 cams-laptop kernel: [71796.118772]  =======================
Nov 17 22:59:19 cams-laptop kernel: [71796.120681] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:59:19 cams-laptop kernel: [71796.120682]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:59:19 cams-laptop kernel: [71796.120686]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:59:19 cams-laptop kernel: [71796.120688]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.120690]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:59:19 cams-laptop kernel: [71796.120693]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:59:19 cams-laptop kernel: [71796.120696]  [<c014a72d>] ? enqueue_hrtimer+0x7d/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.120699]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 22:59:19 cams-laptop kernel: [71796.120701]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 22:59:19 cams-laptop kernel: [71796.120704]  =======================
Nov 17 22:59:19 cams-laptop kernel: [71796.125665] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 22:59:19 cams-laptop kernel: [71796.125667]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 22:59:19 cams-laptop kernel: [71796.125670]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 22:59:19 cams-laptop kernel: [71796.125673]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.125675]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 22:59:19 cams-laptop kernel: [71796.125678]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 22:59:19 cams-laptop kernel: [71796.125680]  [<c014a72d>] ? enqueue_hrtimer+0x7d/0x130
Nov 17 22:59:19 cams-laptop kernel: [71796.125684]  [<c01028cd>] cpu_idle+0xbd/0x140

/var/log# tail -n50  syslog
Nov 17 23:00:01 cams-laptop kernel: [71837.344074]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 23:00:01 cams-laptop kernel: [71837.344077]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 23:00:01 cams-laptop kernel: [71837.344080]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 23:00:01 cams-laptop kernel: [71837.344082]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 23:00:01 cams-laptop kernel: [71837.344085]  [<c0380ff5>] ? notifier_call_chain+0x35/0x70
Nov 17 23:00:01 cams-laptop kernel: [71837.344089]  [<c0151b55>] ? clockevents_notify+0x35/0x80
Nov 17 23:00:01 cams-laptop kernel: [71837.344094]  [<f8859a43>] ? ticks_elapsed_in_us+0xb/0x4d [processor]
Nov 17 23:00:01 cams-laptop kernel: [71837.344100]  [<f885a2d7>] ? acpi_state_timer_broadcast+0x36/0x39 [processor]
Nov 17 23:00:01 cams-laptop kernel: [71837.344105]  [<c0153d82>] ? tick_nohz_stop_idle+0x12/0x70
Nov 17 23:00:01 cams-laptop kernel: [71837.344108]  [<c0153e15>] ? tick_nohz_restart_sched_tick+0x35/0x180
Nov 17 23:00:01 cams-laptop kernel: [71837.344112]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 23:00:01 cams-laptop kernel: [71837.344114]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 23:00:01 cams-laptop kernel: [71837.344117]  =======================
Nov 17 23:00:01 cams-laptop kernel: [71837.351650] bad: scheduling from the idle thread!
Nov 17 23:00:01 cams-laptop kernel: [71837.351654] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 23:00:01 cams-laptop kernel: [71837.351656]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 23:00:01 cams-laptop kernel: [71837.351660]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 23:00:01 cams-laptop kernel: [71837.351663]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 23:00:01 cams-laptop kernel: [71837.351666]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 23:00:01 cams-laptop kernel: [71837.351669]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 23:00:01 cams-laptop kernel: [71837.351672]  [<c014d3bb>] ? sched_clock_tick+0x7b/0xb0
Nov 17 23:00:01 cams-laptop kernel: [71837.351676]  [<c0153dcc>] ? tick_nohz_stop_idle+0x5c/0x70
Nov 17 23:00:01 cams-laptop kernel: [71837.351679]  [<c0153e15>] ? tick_nohz_restart_sched_tick+0x35/0x180
Nov 17 23:00:01 cams-laptop kernel: [71837.351682]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 23:00:01 cams-laptop kernel: [71837.351684]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 23:00:01 cams-laptop kernel: [71837.351687]  =======================
Nov 17 23:00:01 cams-laptop kernel: [71837.356048] bad: scheduling from the idle thread!
Nov 17 23:00:01 cams-laptop kernel: [71837.356051] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 23:00:01 cams-laptop kernel: [71837.356053]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 23:00:01 cams-laptop kernel: [71837.356056]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 23:00:01 cams-laptop kernel: [71837.356058]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 23:00:01 cams-laptop kernel: [71837.356061]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 23:00:01 cams-laptop kernel: [71837.356064]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 23:00:01 cams-laptop kernel: [71837.356067]  [<c0380ff5>] ? notifier_call_chain+0x35/0x70
Nov 17 23:00:01 cams-laptop kernel: [71837.356071]  [<c0151b55>] ? clockevents_notify+0x35/0x80
Nov 17 23:00:01 cams-laptop kernel: [71837.356075]  [<f8859a43>] ? ticks_elapsed_in_us+0xb/0x4d [processor]
Nov 17 23:00:01 cams-laptop kernel: [71837.356082]  [<f885a2d7>] ? acpi_state_timer_broadcast+0x36/0x39 [processor]
Nov 17 23:00:01 cams-laptop kernel: [71837.356088]  [<c0153d82>] ? tick_nohz_stop_idle+0x12/0x70
Nov 17 23:00:01 cams-laptop kernel: [71837.356091]  [<c0153e15>] ? tick_nohz_restart_sched_tick+0x35/0x180
Nov 17 23:00:01 cams-laptop kernel: [71837.356094]  [<c01028cd>] cpu_idle+0xbd/0x140
Nov 17 23:00:01 cams-laptop kernel: [71837.356096]  [<c036edd3>] rest_init+0x53/0x60
Nov 17 23:00:01 cams-laptop kernel: [71837.356099]  =======================
Nov 17 23:00:01 cams-laptop kernel: [71837.356357] bad: scheduling from the idle thread!
Nov 17 23:00:01 cams-laptop kernel: [71837.356361] Pid: 0, comm: swapper Tainted: P        W 2.6.27-7-generic #1
Nov 17 23:00:01 cams-laptop kernel: [71837.356362]  [<c037c406>] ? printk+0x1d/0x1f
Nov 17 23:00:01 cams-laptop kernel: [71837.356366]  [<c0122b8a>] dequeue_task_idle+0x2a/0x40
Nov 17 23:00:01 cams-laptop kernel: [71837.356369]  [<c012107f>] dequeue_task+0xcf/0x130
Nov 17 23:00:01 cams-laptop kernel: [71837.356372]  [<c012112a>] deactivate_task+0x1a/0x30
Nov 17 23:00:01 cams-laptop kernel: [71837.356374]  [<c037ca23>] schedule+0x4b3/0x790
Nov 17 23:00:01 cams-laptop kernel: [71837.356377]  [<c014d3bb>] ? sched_clock_tick+0x7b/0xb0