[ltp] ACPI and CPU issues on Thinkpad X220 running Debian
GNU/Linux
Oscar Frasciello
linux-thinkpad@linux-thinkpad.org
Fri, 2 Sep 2011 14:58:31 +0200
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Dear Kumar=2C
thanks for your prompt reply.
Kernel version is 2.6.39-2-amd64 and it does see all cores=2C indeed at bo=
ot time
it loads CPU0=2C CPU1=2C CPU2=2C CPU3. The same=2C however=2C happens also =
with kernel
3.0.
Thanks again
Oscar
> From: a.kumar@alumni.iitm.ac.in
> To: linux-thinkpad@linux-thinkpad.org
> Subject: Re: [ltp] ACPI and CPU issues on Thinkpad X220 running Debian GN=
U/Linux
> Date: Fri=2C 2 Sep 2011 07:33:17 -0500
>=20
> Dear Oscar=2C
>=20
> On Fri=2C Sep 02=2C 2011 at 12:29:07PM +0200=2C Oscar Frasciello wrote:
> > First: Anything else working good=2C during hibernation with pm-hibe=
rnate
> > i get in kernel and in console:" ACPI: Unable to dock!" but Hibernat=
ion
> > works good
> > even after resume=3B only somtimes i've to unload/reload wifi kernel=
module
> > in order
> > to make it work. Don't know if it's a related issue. The Bios is upg=
raded
> > to the las 1.19
> > release.
>=20
> Could you please tell me the kernel version you use? (uname -r)
>=20
> > Second: In powetop i see two missing idle state for the CPU=2C namel=
y C3 and
> > C4 which i was
> > expected to found there. Is it a wrong guess from me or is there any
> > problem (which could be
> > obscure for me)? If those idle states miss=2C i guess it would be a =
trouble
> > for the CPU and the
> > whole system=2C 'cause maybe the CPU stays more time on unrequested =
powerful
> > states so determining
> > also resource consumption=2C overheating and fan noise.
>=20
> I don't know for sure about this one=2C but I'd still want you to tell
> me the kernel version. Could this happen because your kernel doesn't
> see all the cores? This may happen on x86 kernels=2C but I may be wrong
> again. Generally=2C this shouldn't indicate a CPU problem.
>=20
> Kumar
> --=20
> Kumar Appaiah
> --=20
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
=
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Dear Kumar=2C<br>thanks for your prompt reply.<br>Kernel version is =3B=
2.6.39-2-amd64 and it does see all cores=2C indeed at boot time<br>it load=
s CPU0=2C CPU1=2C CPU2=2C CPU3. The same=2C however=2C happens also with ke=
rnel<br>3.0.<br>Thanks again<br>Oscar<br><div>>=3B From: a.kumar@alumni.i=
itm.ac.in<br>>=3B To: linux-thinkpad@linux-thinkpad.org<br>>=3B Subject=
: Re: [ltp] ACPI and CPU issues on Thinkpad X220 running Debian GNU/Linux<b=
r>>=3B Date: Fri=2C 2 Sep 2011 07:33:17 -0500<br>>=3B <br>>=3B Dear O=
scar=2C<br>>=3B <br>>=3B On Fri=2C Sep 02=2C 2011 at 12:29:07PM +0200=
=2C Oscar Frasciello wrote:<br>>=3B >=3B First: Anything else workin=
g good=2C during hibernation with pm-hibernate<br>>=3B >=3B i get in=
kernel and in console:" ACPI: Unable to dock!" but Hibernation<br>>=3B &=
gt=3B works good<br>>=3B >=3B even after resume=3B only somtimes =
i've to unload/reload wifi kernel module<br>>=3B >=3B in order<br>&g=
t=3B >=3B to make it work. Don't know if it's a related issue. The Bio=
s is upgraded<br>>=3B >=3B to the las 1.19<br>>=3B >=3B relea=
se.<br>>=3B <br>>=3B Could you please tell me the kernel version you us=
e? (uname -r)<br>>=3B <br>>=3B >=3B Second: In powetop i see two m=
issing idle state for the CPU=2C namely C3 and<br>>=3B >=3B C4 which=
i was<br>>=3B >=3B expected to found there. Is it a wrong guess fro=
m me or is there any<br>>=3B >=3B problem (which could be<br>>=3B =
>=3B obscure for me)? If those idle states miss=2C i guess it would be=
a trouble<br>>=3B >=3B for the CPU and the<br>>=3B >=3B whol=
e system=2C 'cause maybe the CPU stays more time on unrequested powerful<br=
>>=3B >=3B states so determining<br>>=3B >=3B also resource c=
onsumption=2C overheating and fan noise.<br>>=3B <br>>=3B I don't know =
for sure about this one=2C but I'd still want you to tell<br>>=3B me the =
kernel version. Could this happen because your kernel doesn't<br>>=3B see=
all the cores? This may happen on x86 kernels=2C but I may be wrong<br>>=
=3B again. Generally=2C this shouldn't indicate a CPU problem.<br>>=3B <b=
r>>=3B Kumar<br>>=3B -- <br>>=3B Kumar Appaiah<br>>=3B -- <br>>=
=3B The linux-thinkpad mailing list home page is at:<br>>=3B http://mailm=
an.linux-thinkpad.org/mailman/listinfo/linux-thinkpad<br></div> =
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