Your message dated Thu, 6 Oct 2011 12:14:36 +0200
with message-id <[email protected]>
and subject line Re: [Debian-eeepc-devel] Bug#644445: cpufrequtils: Doesn't
find the right kernel module on EeePC 701
has caused the Debian Bug report #644445,
regarding cpufrequtils: Doesn't find the right kernel module on EeePC 701
to be marked as done.
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If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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644445: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=644445
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Contact [email protected] with problems
--- Begin Message ---
Package: cpufrequtils
Version: 007-2
Severity: minor
User: [email protected]
Usertag: 701
By loading all possible cpufreq modules, cpufrequtils 007-1
"accidentially" loaded the right module for my EeePC 701, p4_clockmod.
Before that I wasn't even aware that I can change the CPU frequency of
my EeePC 701 so fine-grained, especially after remembering the 701
issues with SHE (see http://bugs.debian.org/559578).
After the upgrade to cpufrequtils 007-2 and a reboot, these neat
features were gone again. While trying to get cpu frequency scaling back
on my EeePC, I downgraded cpufrequtils to 007-1 and that helped. :-)
So please load p4_clockmod for the following CPU:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Celeron(R) M processor 900MHz
stepping : 8
cpu MHz : 900.000
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx up bts
bogomips : 1259.92
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management:
(Before loading p4_clockmod and running "/etc/init.d/loadcpufreq start"
the "cpu MHz" is usually around 630 MHz which interestingly is no more
available in
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies:
112500 225000 337500 450000 562500 675000 787500 900000)
For myself I've worked around this issue by explicitly stating
FREQDRIVER=p4_clockmod in /etc/default/loadcpufreq.
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (990, 'unstable'), (900, 'testing'), (600, 'stable'), (400,
'oldstable'), (110, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 3.1.0-rc7-686-pae (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages cpufrequtils depends on:
ii debconf [debconf-2.0] 1.5.41
ii libc6 2.13-21
ii libcpufreq0 007-2
ii lsb-base 3.2-28
cpufrequtils recommends no packages.
cpufrequtils suggests no packages.
-- debconf information:
cpufrequtils/enable: true
--- End Message ---
--- Begin Message ---
Hi Ben,
Ben Armstrong wrote:
> > I don't think that actually is the right module. The model 701
> > does not support frequency scaling. If cpuinfo shows different
> > values after loading the modules,
It does.
> > it lies.
Oh, ok. That also explain why it doesn't get hotter and doesn't feel
faster, either. :-)
> > There are two ways to scale frequency, [...] use S.H.E.
Yeah, with regards to early EeePC models there was only SHE for me,
too. So I was surprised that p4_clockmod had some effects at all.
> > which the 701 does badly.
Yeah, that's what I meant in my initial report:
| [...] remembering the 701 issues with SHE (see
| http://bugs.debian.org/559578).
> So yes, you can make cpuinfo *say* 900, but if you do benchmarks,
> you'll find speed has not actually increased. I seem to recall, all
> you can do is further slow things down below 630 with p4_clockmod,
Definitely. Running at claimed 115 MHz makes the box horribly slow and
at least the 2xx, 3xx, and 4xx MHz rates are accordingly faster.
> and I believe others measured actual power consumption and it wasn't
> affected.
That's a pity. Thanks for the information.
> So p4_clockmod is useless on this model.
Meh. ;-) Closing the bug herewith. Thanks again for all the information!
Regards, Axel
--
,''`. | Axel Beckert <[email protected]>, http://people.debian.org/~abe/
: :' : | Debian Developer, ftp.ch.debian.org Admin
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--- End Message ---
