Messages in this thread | | | Date | Sun, 24 Aug 2003 18:48:29 +0200 | From | Daniele Venzano <> | Subject | Athlon XP-M and cpufreq freezing Asus laptop to death |
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I don't know if I'm hunting a bug or I have to add support for my hardware somewhere. I succeded in making C2 work adjusting the DSDT table, I'm uploading the new one on acpi.sf.net under Asus/L3100D
Now for cpufreq: I'm using the powernow-k7 driver, since the acpi P-state is not supported. Whenever I try to change the governor by echoing "powersave" in /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor everything stops and a hard reset is required. It seemes to fall in some tight loop since after a few seconds the fan goes on as if there is heavy processor usage.
With some printk I have verified that it halts inside wrmsrl() at line 199, file powernow-k7.c (2.6.0-test4). The call trace is: powernow_target/change_speed/change_FID/wrmsrl
For what is my knowledge (very, very little) the frequency passed to powernow_target is right, but I can't say nothing on all other parameters...
Full dmesg and .config available here[2] and here[3], /proc/cpuinfo and /proc/acpi/processor/CPU0/{power,info} follows.
/proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 8 model name : mobile AMD Athlon(tm) XP-M 2000+ stepping : 1 cpu MHz : 1673.782 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow bogomips : 3309.56
/proc/acpi/processor/CPU0/power active state: C2 default state: C1 bus master activity: 00000000 states: C1: promotion[C2] demotion[--] latency[000] usage[00653320] *C2: promotion[--] demotion[C1] latency[090] usage[04958506] C3: <not supported>
/proc/acpi/processor/CPU0/info processor id: 0 acpi id: 1 bus mastering control: no power management: yes throttling control: yes performance management: no limit interface: yes
Using the acpi p state driver I get a message saying something about 'unsupported address space' (see [1] for details) and the machine stops working also by echoing 'performance' (that is already there) in sysfs.
I don't know what to do next, someone here can give me any hint ?
Thanks for any help on this matter.
[1] http://www.ussg.lu.edu/hypermail/linux/kernel/0308.2/1892.html [2] http://digilander.libero.it/webvenza/download/kpatches/dmesg-cpufreq [3] http://digilander.libero.it/webvenza/download/kpatches/config-cpufreq
-- ---------------------------------------- Daniele Venzano Web: http://digilander.iol.it/webvenza/
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