зависание в режиме работы on demand

[Vladimir Smagin]

есть такая штука как динамическое изменение частоты. когда выставляю
режим on demand, частота падает с 1.7 до 216, а потом вообще колом
встает. где копать?

проц Celeron M 1.7

vlad на vlad-laptop:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile GME965/GLE960 Memory
Controller Hub (rev 0c)
00:02.0 VGA compatible controller: Intel Corporation Mobile
GME965/GLE960 Integrated Graphics Controller (rev 0c)
00:02.1 Display controller: Intel Corporation Mobile GME965/GLE960
Integrated Graphics Controller (rev 0c)
00:19.0 Ethernet controller: Intel Corporation 82562GT 10/100 Network
Connection (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #4 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
Port 2 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
Port 5 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface
Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E)
SATA IDE Controller (rev 03)
10:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN
(rev 02)
vlad на vlad-laptop:~$ uname -a
Linux vlad-laptop 2.6.24-19-generic #1 SMP Wed Aug 20 22:56:21 UTC 2008
i686 GNU/Linux
vlad на vlad-laptop:~$ cat /etc/issue
Ubuntu 8.04.1 \n \l
vlad на vlad-laptop:~$ cpufreq-info 
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux на brodo.de, please.
analyzing CPU 0:
  driver: p4-clockmod
  CPUs which need to switch frequency at the same time: 0
  hardware limits: 217 MHz - 1.73 GHz
  available frequency steps: 217 MHz, 433 MHz, 650 MHz, 867 MHz, 1.08
GHz, 1.30 GHz, 1.52 GHz, 1.73 GHz
  available cpufreq governors: userspace, powersave, ondemand,
conservative, performance
  current policy: frequency should be within 217 MHz and 1.73 GHz.
                  The governor "performance" may decide which speed to
use
                  within this range.
  current CPU frequency is 1.73 GHz.