[fwd] CPUFreq chokes on Sempron

[fwd] CPUFreq chokes on Sempron

[Andi Kleen]

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FYI.


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From: Matthew Trent <t3rmin@gmail.com>
Subject: CPUFreq chokes on Sempron
Date: Sun, 9 Jan 2005 00:09:01 -0800

When loading the powernow-k8 module on any recent kernel (I've tried
2.6.8 through 2.6.10) on my Sempron laptop, I see:
powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09e)
powernow-k8:    0 : fid 0x8 (1600 MHz), vid 0x6 (1400 mV)
powernow-k8:    1 : fid 0x0 (800 MHz), vid 0x18 (950 mV)
cpu_init done, current fid 0x8, vid 0x4
powernow-k8: vid trans failed, vid 0x3, curr 0x4
powernow-k8: transition frequency failed
powernow-k8: vid trans failed, vid 0x3, curr 0x4
powernow-k8: transition frequency failed

... and many more of those 'vid trans failed' errors (one every time
there's an attempted freq change).

There is a small patch available at...
http://ubuntuforums.org/archive/index.php/t-3585.html
...which seems to fix the problem. Should this be included into the
kernel officially?
-- 
Matthew Trent

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Re: [fwd] CPUFreq chokes on Sempron

[Dominik Brodowski]

> From: Matthew Trent <t3rmin@gmail.com>
> Subject: CPUFreq chokes on Sempron
> Date: Sun, 9 Jan 2005 00:09:01 -0800
> 
> When loading the powernow-k8 module on any recent kernel (I've tried
> 2.6.8 through 2.6.10) on my Sempron laptop, I see:
> powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09e)
> powernow-k8:    0 : fid 0x8 (1600 MHz), vid 0x6 (1400 mV)
> powernow-k8:    1 : fid 0x0 (800 MHz), vid 0x18 (950 mV)
> cpu_init done, current fid 0x8, vid 0x4
> powernow-k8: vid trans failed, vid 0x3, curr 0x4
> powernow-k8: transition frequency failed
> powernow-k8: vid trans failed, vid 0x3, curr 0x4
> powernow-k8: transition frequency failed
> 
> ... and many more of those 'vid trans failed' errors (one every time
> there's an attempted freq change).
> 
> There is a small patch available at...
> http://ubuntuforums.org/archive/index.php/t-3585.html
> ...which seems to fix the problem. Should this be included into the
> kernel officially?

It is already "queued" in Dave Jones' cpufreq bitkeeper tree for inclusion
into the mainline kernel, and thus is already in 2.6.10-mm2.

Thanks,
	Dominik