cpuspeed stuck in lowest speed after hibernate ?
Chris Jones
jonesc at hep.phy.cam.ac.uk
Fri Jul 14 07:44:43 UTC 2006
Hi,
I have just noticed that sometimes (not everytime...) after a hibernate/resume
cycle, my machine seems to be stuck in its lowest cpu speed state. It has
worked fine for quite some time (although I have only had hibernate working
since FC5).
Has anyone else seen anything like this ? I include below extracts
from /proc/. I have searched around in the logs but not really found
anything, but then I'm not sure what to look for or where.
I thought it might be a 2.6.17 kernel issue, since I recently updated to
2.6.17-1.2145_FC5, but I see the same thing with 2.6.16-1.2133_FC5
cheers Chris
jonesc at localhost ~ > cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 9
model name : Intel(R) Pentium(R) M processor 1500MHz
stepping : 5
cpu MHz : 600.000
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr mce cx8 mtrr pge mca cmov pat clflush
dts acpi mmx fxsr sse sse2 tm pbe est tm2
bogomips : 1200.12
jonesc at localhost ~ > cat /proc/acpi/processor/CPU0/*
processor id: 0
acpi id: 0
bus mastering control: yes
power management: yes
throttling control: yes
limit interface: yes
active limit: P0:T0
user limit: P0:T0
thermal limit: P0:T0
active state: C2
max_cstate: C8
bus master activity: 12347887
states:
C1: type[C1] promotion[C2] demotion[--] latency[000]
usage[00000010]
*C2: type[C2] promotion[C3] demotion[C1] latency[001]
usage[00703531]
C3: type[C3] promotion[C4] demotion[C2] latency[085]
usage[00000039]
C4: type[C3] promotion[--] demotion[C3] latency[185]
usage[00000757]
state count: 8
active state: T0
states:
*T0: 00%
T1: 12%
T2: 25%
T3: 37%
T4: 50%
T5: 62%
T6: 75%
T7: 87%
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