seems this is my same problem: http://bugs.archlinux.org/task/17771 On Mon, Feb 22, 2010 at 10:42 AM, Stefano Z. <mie.iscrizioni@gmail.com> wrote:
nothing, the problem still exist, also with i915.modeset=0.
On Mon, Feb 22, 2010 at 11:30 AM, Andrea Fagiani <andfagiani@gmail.com> wrote:
On 02/22/2010 09:04 AM, Stefano Z. wrote:
no, my dual celeron su2300 dosen't support speedstep, it stay fixed to 1.2ghz but i have found the problem, i think this problem have to do with KMS... I have istalled kernel26 2.6.31.6-1 and the problem disappered but obviously this is not the solution i want ;-) If i install 2.6.32+ kernel the problem reappear. Another thing that happens is that the cpu(s) Temperature with kernels
2.6.31 stay
about on 53+C while with kernel<2.6.32 stays on 42C...
On Mon, Feb 22, 2010 at 9:43 AM, Andrea Fagiani<andfagiani@gmail.com> wrote:
On 02/22/2010 04:53 AM, Brendan Long wrote:
On 02/21/2010 04:55 PM, Xavier Chantry wrote:
On Mon, Feb 22, 2010 at 12:42 AM, Stefano Z.<mie.iscrizioni@gmail.com> wrote:
> > hi > > i've bought a new notebook (hp pavilion dm1-1150sl) and installed > archlinux. > i have see a strange thing with powertop, i'm running the vanilla arch > kernel26, > and i have see this behaviour: > Cn Avg residency P-states (frequencies) > C0 (cpu occupata) (31,6%) > C0 0,0ms ( 0,0%) > C1 mwait 0,1ms ( 0,7%) > C4 mwait 0,0ms (67,8%) > Wakeups-from-idle per second : 31483,5 interval: 10,0s > --- > as you can see, i have a LOT of wakeups per seconds very low c1 states > lot of c0 and c4 states, > a wattmeter tell me that archlinux consume about 25/26watt > Then i have boot a live ubuntu distro and see this: > Cn permanenza media P-state (frequenze) > C0 (cpu occupata) ( 0,6%) > polling 0,0 ms ( 0,0%) > C1 mwait 26,7 ms (68,6%) > C4 mwait 1,2 ms (30,8%) > Wakeup-da-idle al secondo: 281,3 intervallo: 15,0s > --- > as you can see the wakeups are a LOT lower than on arch and we have > lot of c1 and c4 state, > power consumption is about 20W, the same that i have with win7 (about > 18/20w). > For meaning about cX state see here: > http://www.lesswatts.org/projects/powertop/powertop.php > > thanks! > > > >
You didn't give enough information so we will need to check the basis : - which cpufreq driver and governor are you using in both cases (check cpufreq-info) - what processes does powertop show as causes for wakeups ? - what processes does top show in term of cpu usage ?
Here is what I got in the last few minutes when i was writing this : C4 mwait 3.4ms (92.5%) 800 Mhz 98.0% Wakeups-from-idle per second : 279.4 interval: 10.0s
I have a core 2 duo with acpi-cpufreq loaded and conservative governor. $ grep cpufreq /etc/rc.conf MODULES=(acpi-cpufreq) DAEMONS=(syslog-ng net-profiles crond dbus hal alsa cpufreq storage-fixup) $ grep governor /etc/conf.d/cpufreq # valid governors: governor="conservative"
They may just not have cpu-freq-utils installed maybe? I'm using laptop-mode-tools with compiz and GNOME running (but not doing anything) and it's saying 99.2% C4, 0.8% C0. This is with another Core2 and laptop-mode is set to use the powersave governor on battery (which is how I tested). When I plug it in, it jumps up to 25%, but I don't really care how active the processor is when it's on battery.
Be sure to have cpu-freq-utils installed, as well as loading the right modules (acpi-cpufreq, cpufreq_ondemand, if you plan on using the same governor as ubuntu does), and add `cpufreq` to your DAEMONS array in rc.conf. On my system, with laptop-mode-tools the powertop output is very similar to what Brendan said. Also, the 31k+ wakeups definitely mean there's some issue on your config.
If you think it's KMS causing problems, try adding `nomodeset` to your kernel boot line and see what happens.