acpi-cpufreq doesn't allow >800Mhz on Fujistu T4220
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Fedora) |
Won't Fix
|
Medium
|
|||
linux (Ubuntu) |
Won't Fix
|
Medium
|
Unassigned | ||
Hardy |
Won't Fix
|
Medium
|
Unassigned |
Bug Description
Binary package hint: linux-source-2.6.24
If the machine (Fujitsu T4220) is booted without any cpufreq modules it runs at 2Ghz.
Soon after I run 'modprobe acpi-cpufreq' the speed drops to 800Mhz
When I load the acpi-cpufreq module at first it reports 2001000 for cpuinfo_cur_freq but drops through each of the available frequencies at a rate of about 1 step per second.
After this no matter what I do I can't increase this (regardless of cpufreq governor used)
According to /sys/devices/
Below is data I hope is useful
# uname -a
Linux fugue 2.6.24-2-generic #1 SMP Thu Dec 13 23:21:19 GMT 2007 x86_64 GNU/Linux
root@fugue:
affected_cpus:0 1
cpuinfo_
cpuinfo_
cpuinfo_
scaling_
scaling_
scaling_
scaling_
scaling_
scaling_
scaling_
scaling_
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz
stepping : 10
cpu MHz : 800.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm ida
bogomips : 3994.31
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz
stepping : 10
cpu MHz : 800.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm ida
bogomips : 3989.97
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
Changed in linux: | |
status: | Unknown → Confirmed |
Changed in linux: | |
status: | Incomplete → Triaged |
Changed in linux (Fedora): | |
status: | Confirmed → Won't Fix |
Changed in linux (Fedora): | |
importance: | Unknown → Medium |
From Bugzilla Helper: 2.0.0.9- 1.fc9 Firefox/2.0.0.9
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.9) Gecko/20071105 Fedora/
Description of problem:
On my Santa Rosa based Fujitsu T4220 notebook the CPU frequency is permanently stuck at 800MHz (actual max is 2GHz) no matter what the load. This occurs no matter which governor is selected (userspace, ondemand, performance etc..).
On resume from suspend to ram, the frequency fluctuates between 800MHz and 1.6GHz for approx. a minute, and then goes back to being stuck at 800MHz.
Version-Release number of selected component (if applicable): 2.6.24- 0.42.rc3. git1.fc9
kernel-
How reproducible:
Always
Steps to Reproduce:
1. boot into fedora
2. check /cat/proc/cpuinfo ( will be 800MHz )
3. run something cpu intensive
3. check cpuinfo (still stuck at 800MHz)
Actual Results:
The CPU frequency doesn't change
Expected Results:
The frequency should increase to max if needed and go back to min when not.
Additional info: