Linux Archive

Linux Archive (http://www.linux-archive.org/)
-   Debian User (http://www.linux-archive.org/debian-user/)
-   -   ac adapter serious problem (http://www.linux-archive.org/debian-user/19452-ac-adapter-serious-problem.html)

roberto 12-14-2007 09:19 AM

ac adapter serious problem
 
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


--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

Benjamin Schmidt 12-14-2007 11:30 AM

ac adapter serious problem
 
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

Benjamin Schmidt 12-14-2007 02:34 PM

ac adapter serious problem
 
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

roberto 12-14-2007 08:13 PM

ac adapter serious problem
 
On Dec 14, 2007 4:34 PM, Benjamin Schmidt <schmidi2@directbox.com> 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.

i hardly know how to do it ...
--
roberto
OS: GNU/Linux, Debian


--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

Jude DaShiell 12-14-2007 11:31 PM

ac adapter serious problem
 
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




--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org


All times are GMT. The time now is 01:40 PM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.