Talk:How to get SpeedStep working on Coppermine-piix4-smi based ThinkPads
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speedstep-smi fails to load if CONFIG_CPU_FREQ_DEBUG is not set
On a ThinkPad T22 I was not able to use speedstep-smi if CONFIG_CPU_FREQ_DEBUG is not set. See this bug report: http://bugzilla.kernel.org/show_bug.cgi?id=5553
RELAXED_CAP_CHECK on T20
On a Thinkpad T20 using Debian unstable and a stock kernel.org kernel 2.6.11.6, building the kernel with CONFIG_X86_SPEEDSTEP_RELAXED_CAP_CHECK=y doesn't seem to show the error you're experiencing while loading speedstep-smi. So that means loading speedstep-smi module results to no error at all.
Jan Alonzo 23:25 23-12-2024
From the kernel config:
┌────────────────────── Relaxed speedstep capability checks ──────────────────────┠│ CONFIG_X86_SPEEDSTEP_RELAXED_CHECK: │ │ │ │ Don't perform all checks for a speedstep capable system which would │ │ normally be done. Some ancient or strange systems, though speedstep │ │ capable, don't always indicate that they are speedstep capable. This │ │ option lets the probing code bypass some of those checks if the │ │ parameter "relaxed_check=1" is passed to the module. │ │ │
this option only lets you use relaxed_check=1, it doesn't solve anything. this may mean that your model isn't affected at all, or that you have the described file in /etc/modprobe.d
ondemand t22
I would like to know if ondemand is possible on a t22. Also I'm wondering why cpu speed is only either 700mhz or 900mhz.
In /proc/acpi/processor/CPU/throttling there are 7 states defined, but changing them seem to does not do anything. Also cpudynd -acpi tells me there is no interface. I tried also to use acpi-cpufreq but it won't run because 'no such device'. How to use it?
Thx in advance, nusse.
no cpufreq interface found ?
I had a hard time to figure out that for cpufreq you also have to install (at least a subset of?) the modules
freq_table proc_intf
I used modconf where I found these modules listet under "kernel/drivers/cpufreq" tagged as "not installed".
I am a newby using Debian Sarge on a Fujitsu Siemens Amilo D, with a Pentium III (Coppermine). However this information might also apply to thinkpads.
Trouble with 2.6.15
I am using linux-image-2.6.15-1-686 and speedstep-smi won't load anymore. Again 'no such device' error. No idea why yet. User:Daniel_X21
Yep, there is a new bug with new kernels... See the link to bug at the begin of this page. The 2.6.16 resolve the bug for me. (On a ThinkPad X20). --Julienbras 10:24, 10 April 2006 (CEST)
Did not work on A21e
I tried following this guide on my A21e and had no luck.
I got the following in the log using boot param cpufreq.debug=7
speedstep-lib: x86: 6, model: 8 speedstep-lib: Coppermine: MSR_IA32_EBL_CR_POWERON is 0x46c80020, 0x0 speedstep-lib: Coppermine: MSR_IA32_PLATFORM ID is 0x0, 0x5c370000 speedstep-smi: signature:0x47534943, command:0x008200b2, event:0x00c000b3, perf_level:0x07d00000. cpufreq-core: trying to register driver speedstep-smi cpufreq-core: adding CPU 0 speedstep-smi: trying to obtain ownership with command 47534982 at port b2 speedstep-smi: result is 2 speedstep-smi: fails in aquiring ownership of a SMI interface. cpufreq-core: initialization failed cpufreq-core: no CPU initialized for driver speedstep-smi cpufreq-core: unregistering CPU 0