This needs to be put on a complaint form over at consumeraffairs.com as
soon as possible.
On Fri, 14 Dec 2007, Benjamin Schmidt wrote:
roberto wrote:
hello
unfortunately, i encountered a bad problem in my laptop (Dell Latitude
D600) very frequent on these models:
sometimes, the BIOS does not recognize the ac adapter and this
seriously prevents the system performance: the CPU works at 600MHz
(instead of 2000MHz); if the battery is not at 100% then the ac
adapter cannot recharge it and so on...
now, since the current can flow inside the pc i'd like to tell Debian
to force the CPU working at full speed, without concerns about the
adapter
i post here this output since it may be helpful:
~$ cat /proc/acpi/processor/CPU0/power
active state: C2
default state: C1
bus master activity: ffffffff
states:
C1: promotion[C2] demotion[--] latency[000] usage[00198990]
*C2: promotion[C3] demotion[C1] latency[050] usage[01315600]
C3: promotion[--] demotion[C2] latency[050] usage[00000000]
thank you very much
--
roberto
OS: GNU/Linux, Debian
Hey Roberto
Best would be doing a bios upgrade, if a newer version is available.
~$ cat /proc/acpi/processor/CPU0/power
active state: C2
...
to change this state (this is probably your question), do this:
$ su
# echo 1 > /proc/acpi/processor/CPU0/power
The echo-command with the ">" does not work with sudo (or I do not know
better), so you actually have to be root.
Please note that "/proc/acpi/processor/CPU1/throttling" would also be
interesting for you.
But still a bios upgrade would be the better solution.
Best regards,
Benjamin Schmidt
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