I am considering purchasing AMD PHENOM II x6 1055T box.
I want to install the latest ubuntu.
Does anyone know if Ubuntu works smoothly on the Phenom II machines ?
thanks
Dag

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--Dagg

Yes.......

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More Advanced Micro Devices than Intel

My Phenom II x6 1055T is "out for delivery" today. I just did a quick search and found this article:

http://www.ubuntu-user.com/lay...ontent/view/full/1098

AMD has floated a fix for it but the best I was able to determine was that it's in the 2.6.35 version of the kernel. My Unbuntu right now is at 2.6.32 (and I think the kernel just updated yesterday).

Anybody know where the fix for this sits in the kernel version tree and if/when Ubuntu will pick it up?

Looks like we'll see it in the 2.6.34 kernel:
http://www.h-online.com/open/n...nder-Linux-993127.html

Interesting information ColonelPackage. I know Ubuntu works well with the X4 but did not realize the performance issue with the X6 Turbocore function. Keep us posted on how it goes for you.

Cheers.

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The CPU is "in the house". Installing now...

I'm going to go out on a limb and guess that Ubuntu propagated the AMD patch.

This site:http://www.ubuntu-user.com/lay...content/view/full/1098 says this:

"AMD has already sent a relevant patch upstream. The chipmaker is encouraging distro maintainers to update with this patch as soon as possible. The patch should be included in the next Ubuntu 10.04 kernel update. To determine if the issue affects your system, use the following command:

dmesg | grep "pstate 0"

If the maximum frequency (pstate 0) is shown as 3600 MHz for the 1090T or 3300 MHz for the 1055T, the system's performance is reduced."

I try it and get:

[ 1.524386] powernow-k8: 0 : pstate 0 (2800 MHz)

I don't see anything else that looks wrong and I left the Cool 'n Quiet enabled in the bios.

Looks like its all good.

FWIW, the stock fan/heatsink that comes with it is pretty noisy. I went from and Athlon II X2 250 that was basically silent so its really noticeable.

Have fun!

Hi.

I brought this up i while ago on this forum and was told i was wrong that my 1055T was running all cores at 3.3ghz. ( my posts are still here somewhere )

I've tried doing this (dmesg | grep "pstate 0") in terminal but i don't get any result it just goes back to the prompt.

Anyone know of an app for Ubuntu that shows the cpu speed live for ALL CORES as i haven't been able to find anything that works.

This being an AMD forum i had hoped there would be some Official Tech help from them.

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PPL this is a user forum:

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The opinions expressed above do not represent those of Advanced Micro Devices or any of their affiliates.

Physics? Ha! This is clearly magic and devilry at work. Prepare firewood! We have witches to burn!


MODERATOR

PPL,

What version of Ubuntu are you running? Could be part of the problem. From what I've read, when you are experiencing the problem you'll get the bogus 3.3ghz value.

I'm running 10.04. There is a applet you can add to the panel (bar) across the top of screen that tracks the CPU clock speed. Its pretty cool, it allows you set the mode (ie. conservative, Ondemand, Performance, Powersave) and it must set the associated setting the bios. Its called "CPU Frequency Scaling Monitor".

Hope that helps.

I meant to say that the applet also displays the CPU clock speed in realtime. Also I think all the cores are locked to the same speed. ie. They aren't individually clocked at different speeds.

I have that app setup on my computer too.

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The opinions expressed above do not represent those of Advanced Micro Devices or any of their affiliates.

Physics? Ha! This is clearly magic and devilry at work. Prepare firewood! We have witches to burn!


MODERATOR

Ubuntu handles almost anything you throw at it hardware wise, the hex cores are troublesome for some but it will improve as Linux developers are pretty good at patching in fixes.