Date: Thu, 24 May 2007 00:08:46 +0530 From: "Tank Abbot" <tabbot@gmail.com> To: freebsd-acpi@freebsd.org Subject: Re: CPU temp AC vs Battery Message-ID: <8e29d9830705231138s2b2ef7c7ubb8001ef37dc297c@mail.gmail.com> In-Reply-To: <46542EF3.7030809@freebsd.org> References: <4630BCC4.10601@freebsd.org> <4637860D.8060603@freebsd.org> <46378F75.6020007@root.org> <4637944C.5000709@freebsd.org> <46379F42.3040700@freebsd.org> <46542EF3.7030809@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
I had a same problem on my old dell and i never quite figured what the problem was. cpufreq_load="YES" solved it for me. Thank you. tabbot http://www.yosumiru.com/ On 5/23/07, Eric Anderson <anderson@freebsd.org> wrote: > On 05/01/07 15:12, Eric Anderson wrote: > > On 05/01/07 14:26, Eric Anderson wrote: > >> On 05/01/07 14:05, Nate Lawson wrote: > >>> Eric Anderson wrote: > >>>> On 04/26/07 09:52, Eric Anderson wrote: > >>>>> Hi everyone, > >>>>> > >>>>> I've just noticed something very odd. On my Dell D820 laptop, when > >>>>> running off AC power from boot, by idle CPU temperature sits around 58C. > >>>>> > >>>>> If I unplug the power, and then plug it back in again, it will drop > >>>>> down to around 49-50C within a minute or two. It will stay there. > >>>>> With or without powerd running. > >>>> Another note: > >>>> > >>>> If I boot up without the AC adapter plugged in, it still runs hot. Only > >>>> the transition from AC -> battery seems to make a difference. > >>>> > >>>> Anyone with some ideas?? > >>> Does the temp change at all or is it stuck at 58C? If stuck, maybe the > >>> reading is incorrect and something in the AC line transition kicks the > >>> EC back into operation. > >> The temp does change, about 10C. > > > > > > Hmm.. Seems also that my performance is reduced quite a bit. Doing some > > rather lame CPU benchmarks (ubench -c -s), seems that I get a score of > > around 200k on AC before unplugging, and about 104k after > > unplugging/plugging back in. It definitely feels slower too.. > > > > I don't see any speed changes or anything obvious in sysctl output. > > > > > >>> If it changes, then perhaps something is generating a lot of interrupts > >>> (perhaps SMI or SCI irqs). More debug prints from the acpi-ca Notify > >>> routine caller would help zero in. > >>> > >> Just add some printfs in there and recompile/reboot? > > Turns out that adding this to my /boot/loader.conf resolves it: > > cpufreq_load="YES" > > > Eric > > > > _______________________________________________ > freebsd-acpi@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-acpi > To unsubscribe, send any mail to "freebsd-acpi-unsubscribe@freebsd.org" >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?8e29d9830705231138s2b2ef7c7ubb8001ef37dc297c>