2010/2/22 Stefano Z. <mie.iscrizioni@xxxxxxxxx>: > 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@xxxxxxxxx> wrote: >> nothing, the problem still exist, also with i915.modeset=0. >> >> On Mon, Feb 22, 2010 at 11:30 AM, Andrea Fagiani <andfagiani@xxxxxxxxx> 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@xxxxxxxxx> >>>> 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@xxxxxxxxx> >>>>>>> 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. >>> >> > http://bugzilla.kernel.org/show_bug.cgi?id=14742 and I quote: http://bugzilla.kernel.org/show_bug.cgi?id=14742#c4 "ok so there is something very interesting here: your system, for some reason, seems to exit the C2 state immediately when it gets entered. (C2 is only available because the bios announces its presence). This is a hardware/BIOS bug, and a bad one at that. In the old code, for some reason, C2 is not used in practice. With the new code, the governor will try to use C2, repeatedly. I think the real solution is not to change the governor, but to make a quirk for your system so that Linux will just not use C2 on your system... Can you attach the output of "dmidecode"; we'll need that to make a quirk." and, a little further down: http://bugzilla.kernel.org/show_bug.cgi?id=14742#c8 "[ A request for people who see a similar issue: Please file a seperate bug for each different machine. So unless you have a HP PAvilion zv5000, you need a different bug]" They assumed that this issue would not rise on many different systems but apparently more are showing. I would definately suggest you guys to take this upstream. -- msn: stefan_wilkens@xxxxxxxxxxx e-mail: stefanwilkens@xxxxxxxxx blog: http://www.stefanwilkens.eu/ adres: Lipperkerkstraat 14 7511 DA Enschede
