CPU temp AC vs Battery

[Eric Anderson]

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??

Eric





> Here's some info:
> 
> # uname -a
> FreeBSD 7.0-CURRENT FreeBSD 7.0-CURRENT #51: Tue Apr 24 10:24:43 CDT 
> 2007     snip at snip:/usr/obj/usr/src/sys/NEUTRINO  i386
> 
> 
> # kldstat
> Id Refs Address    Size     Name
>   1   36 0xc0400000 77d33c   kernel
>   2    3 0xc0b7e000 23398    linux.ko
>   3    1 0xc0ba2000 118dc    snd_hda.ko
>   4    2 0xc0bb4000 3c114    sound.ko
>   5    1 0xc0bf1000 6d3e68   nvidia.ko
>   6    1 0xc12c5000 4bb8     atapicam.ko
>   7    6 0xc12ca000 c6d4     netgraph.ko
>   8    1 0xc12d7000 79c8     ng_ubt.ko
>   9    1 0xc12df000 5868     vkbd.ko
> 10    1 0xc12e5000 1d294    kqemu.ko
> 11    1 0xc1303000 2ffa4    ipl.ko
> 12    1 0xc1333000 13544    geom_journal.ko
> 13    1 0xc1347000 5d420    acpi.ko
> 14    1 0xc5b02000 6000     linprocfs.ko
> 15    1 0xc5b33000 e000     ext2fs.ko
> 16    4 0xc5d27000 2000     ng_bluetooth.ko
> 17    1 0xc5d29000 c000     ng_hci.ko
> 18    1 0xc5d35000 e000     ng_l2cap.ko
> 19    1 0xc5d43000 15000    ng_btsocket.ko
> 20    1 0xc5d61000 4000     ng_socket.ko
> 21    1 0xc5e4a000 7000     aio.ko
> 
> both before and after power plugging:
> # sysctl dev.cpu
> dev.cpu.0.%desc: ACPI CPU
> dev.cpu.0.%driver: cpu
> dev.cpu.0.%location: handle=\_PR_.CPU0
> dev.cpu.0.%pnpinfo: _HID=none _UID=0
> dev.cpu.0.%parent: acpi0
> dev.cpu.0.freq: 1985
> dev.cpu.0.freq_levels: 1985/-1 1736/-1 1488/-1 1240/-1 992/-1 744/-1 
> 496/-1 248/-1
> dev.cpu.0.cx_supported: C1/1 C2/1 C3/57
> dev.cpu.0.cx_lowest: C1
> dev.cpu.0.cx_usage: 100.00% 0.00% 0.00%
> dev.cpu.1.%desc: ACPI CPU
> dev.cpu.1.%driver: cpu
> dev.cpu.1.%location: handle=\_PR_.CPU1
> dev.cpu.1.%pnpinfo: _HID=none _UID=0
> dev.cpu.1.%parent: acpi0
> dev.cpu.1.cx_supported: C1/1 C2/1 C3/57
> dev.cpu.1.cx_lowest: C1
> dev.cpu.1.cx_usage: 100.00% 0.00% 0.00%
> 
> 
> Eric
> 
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