Skip to contentSkip to conversation

cpu won't stay in powersave mode

DISCUSSION Tom Bruno 2 participants 3 messages Dec 15, 2003 – Dec 20, 2003

lore
Share & tools
lore

Tom Bruno

author
#0 lore raw

Sorry, accendtly hit reply instead of send to list.

Quoted 3 lines · Thomas Renninger
Quoted 1 line · Tom Bruno

Like i said above if I change it via hand using echo, /proc/cpuinfo

is

Quoted 9 lines
Quoted 9 lines

correct, and the cputest reports the correct speed constantly.

performance mode: 2.4ghz
powersave mode: 1.2ghz
Intel P4-M 2.4ghz
Dell Inspiron 8500 - Bios A05
kernel-2.6.0-test11

Quoted 4 lines

/proc/cpu_info didn't work for me, too.
However it seems to work now(after I changed the governors to be compiled as modules(or the way around?)).

I've now tried both as modules, and compiled in, /proc/cpuinfo works niether report correctly.

Quoted 2 lines

If you want to detemine the current real speed of your machine use the procspeed prog I posted some days ago(04.12, 09.12).

yes, that is the program i spoke of. However, like i said, when /proc/cpuinfo is reporting wrong, my system works it's way back to full speed even though powersave is in the /sys scaling_governor.

It will report the changed speed (clockdown to 1.2ghz) for about 10 seconds, and then will start to report again at 2.4ghz even though the setting haddn't changed.

Signature · 7 lines
Vwords.com Technology Services
 PC and Network Services for Southern Illinois
  Phone: 618-713-6896
-- 
Vwords.com Technology Services
 PC and Network Services for Southern Illinois
  Phone: 618-713-6896
#1 lore raw
Quoted 26 lines · Tom Bruno

Sorry, accendtly hit reply instead of send to list.

Quoted 3 lines · Thomas Renninger
Quoted 1 line · Tom Bruno

Like i said above if I change it via hand using echo, /proc/cpuinfo

is

Quoted 9 lines
Quoted 9 lines

correct, and the cputest reports the correct speed constantly.

performance mode: 2.4ghz
powersave mode: 1.2ghz
Intel P4-M 2.4ghz
Dell Inspiron 8500 - Bios A05
kernel-2.6.0-test11

Quoted 4 lines

/proc/cpu_info didn't work for me, too.
However it seems to work now(after I changed the governors to be compiled as modules(or the way around?)).

I've now tried both as modules, and compiled in, /proc/cpuinfo works niether report correctly.

Quoted 2 lines

If you want to detemine the current real speed of your machine use the procspeed prog I posted some days ago(04.12, 09.12).

Quoted 7 lines

yes, that is the program i spoke of. However, like i said, when /proc/cpuinfo is reporting wrong, my system works it's way back to full speed even though powersave is in the /sys scaling_governor.

It will report the changed speed (clockdown to 1.2ghz) for about 10 seconds, and then will start to report again at 2.4ghz even though the setting haddn't changed.

I think the BIOS is meddling with the speedstep setting [this is more common for older systems, but obviously some vendors still think it's a good idea] . If it were cpufreq, the value in /proc/cpuinfo would be updated as well.

Do you run an ACPI-enabled kernel?

Dominik

_______________________________________________
Cpufreq mailing list
[email protected]
http://www.linux.org.uk/mailman/listinfo/cpufreq

author
#2 lore raw
Quoted 35 lines · Dominik Brodowski
Quoted 26 lines · Tom Bruno

Sorry, accendtly hit reply instead of send to list.

Quoted 3 lines · Thomas Renninger
Quoted 1 line · Tom Bruno

Like i said above if I change it via hand using echo, /proc/cpuinfo

is

Quoted 9 lines
Quoted 9 lines

correct, and the cputest reports the correct speed constantly.

performance mode: 2.4ghz
powersave mode: 1.2ghz
Intel P4-M 2.4ghz
Dell Inspiron 8500 - Bios A05
kernel-2.6.0-test11

Quoted 4 lines

/proc/cpu_info didn't work for me, too.
However it seems to work now(after I changed the governors to be compiled as modules(or the way around?)).

I've now tried both as modules, and compiled in, /proc/cpuinfo works niether report correctly.

Quoted 2 lines

If you want to detemine the current real speed of your machine use the procspeed prog I posted some days ago(04.12, 09.12).

Quoted 7 lines

yes, that is the program i spoke of. However, like i said, when /proc/cpuinfo is reporting wrong, my system works it's way back to full speed even though powersave is in the /sys scaling_governor.

It will report the changed speed (clockdown to 1.2ghz) for about 10 seconds, and then will start to report again at 2.4ghz even though the setting haddn't changed.

Quoted 8 lines

I think the BIOS is meddling with the speedstep setting [this is more common for older systems, but obviously some vendors still think it's a good idea] . If it were cpufreq, the value in /proc/cpuinfo would be updated as well.

Do you run an ACPI-enabled kernel?

Dominik

Yes, I have acpi enabled, and to the best of my knowledge, it is
functioning correclty, at least "externally" /proc/acpi/events works and returns events and stuff. Don't know about non visiable internals though.

New stats:
Dell Inspiron 8500

Bios: A05
Cpu:  Pentium-M 2.4ghz

Gentoo Linux
Kernel: 2.4.23, 2.6.0

_______________________________________________
Cpufreq mailing list
[email protected]
http://www.linux.org.uk/mailman/listinfo/cpufreq