Getting AMD64 powernow up and working under Gentoo

[infirit]

Ok I didn't read all Sites only the beginning.

I'm wondering why people do all this things with cpudyn. Ich simply ermerged the powernowd, added it to default runlevel and everything is working beautiful..

The problem is not in userspace, cpudyn and powernowd both work without problem.

Ususally the bad guy is badly implemented c&q in the mobo's bios. Upgrade to the latest version or even a beta might help. Also kernels pre 2.6.11 have issues with powernow on Athlon 64 so upgrading the kernel is recomended.

[zinion]

Ok I didn't read all Sites only the beginning.

I'm wondering why people do all this things with cpudyn. Ich simply ermerged the powernowd, added it to default runlevel and everything is working beautiful..

The problem is not in userspace, cpudyn and powernowd both work without problem.

Ususally the bad guy is badly implemented c&q in the mobo's bios. Upgrade to the latest version or even a beta might help. Also kernels pre 2.6.11 have issues with powernow on Athlon 64 so upgrading the kernel is recomended.

Uhm. hm?

Don't exactly know why you quote me and then tell this. It's running fine on my system. From the beginning. Like I said in the quoted Post.

??

[perry]

is there still no solution for "vid trans failed, vid 0x3, curr 0x4"?

Just started messing around w/ the powernow-k8 stuff today on my Winchester 3000+ on a Gigabyte K8N Ultra-9 (nForce4 Ultra chipset). I was getting those errors so I hit the kernel bugzilla and found this bug. The patch seems to have fixed the problem on 2.6.11-gentoo-r7 for me.

As reported by sensors and /proc/cpuinfo

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Idle:
vCPU:      +1.12 V
cpu MHz         : 1005.165

With cpuburn going:
vCPU:      +1.44 V
cpu MHz         : 1809.297

[Tshwala]

Hi all

Is there any way to make the ondemand governer unresponsive to certain processes? I run seti@home at 19 nice and the CPU stays at max freq.

[movrev]

I did a quick test comparing the userspace cpudyn and the ondemand governor from the kernel.

Both worked perfectly and scaled almost instantly up to the maximun frequency (2200 MHz for 3500+) and then reduced the frequency as load dissapeared to the minimun frequency (1000 MHz).

As I said, the scaling up was almost instantaneous, but the scaling down showed the biggest difference. The ondemand governor took almost 15 seconds to scale from 2200 to 2000, then another 15 secs to get to 1800, and yet another 15 secs to reach 1000 (45 secs total approx). This seems quite slow in comparison with cpudyn (with the standard configuration) that took approx 4 secs to go from 2200 to 1000.

I don't know how much does a userspace utility such as cpudyn can affect the performance overall in comparison to the ondemand governor, but it seems that for what it is supposed to do, it works better. Please correct me if I am wrong.

[strites]

Hi all

GA-K8NF-9

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powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09e)
powernow-k8:    0 : fid 0xa (1800 MHz), vid 0x6 (1400 mV)
powernow-k8:    1 : fid 0x2 (1000 MHz), vid 0x12 (1100 mV)

switching to ondemand

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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
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
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
powernow-k8: vid trans failed, vid 0x3, curr 0x4
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed
ignoring illegal change in lo freq table-2 to 0x2
powernow-k8: transition frequency failed

etcetera


any ideas? I'm using the last gentoo-sources


EDIT: I tried this

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# lspci
0000:00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev a2)
0000:00:01.0 ISA bridge: nVidia Corporation: Unknown device 0050 (rev a2)                                <<<<<WHAT IS THIS???
0000:00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
0000:00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2)
0000:00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a2)
0000:00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2)
0000:00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev a2)
0000:00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev a2)
0000:00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev a2)
0000:00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2)
0000:00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a2)
0000:00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a2)
0000:00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a2)
0000:00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a2)
0000:00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a2)
0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
0000:01:0a.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b Link Layer Controller (rev 01)
0000:05:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6200] (rev a2)

[strites]

Today I worked to understand how precisely this problem is happening.

I set the governor to userspace

my cpu supports 1800000 & 1000000 (Amd 3000+ on 939) (from now I will use "18" and "10")

default is 18.

I changed it to 10 (echo 10 > scaling_setspeed )

It worked and I could see the new value on scaling_cur_freq AND on /proc/cpuinfo.

I so rechanged to 18

Here problems arrives as described up.

AND scaling_cur_freq stays at 10, while /proc/cpuinfo displays 18

form now on, everything i put on scaling_setspeed gives dmesg error.

So the first scaling goes well (seems) but something after is broken. [/code]

[strites]

WHO HAD THE SCALING PROBLEM PLEASE READ THIS!!!

please go to http://bugzilla.kernel.org/show_bug.cgi?id=4392#c1 and download the patch

follow the patch instruction ftom http://www.linuxhq.com/patch-howto.html and try!

(after applying the patch you need to do "make" and copy the bzImage to /boot , change the bootloader accordingly and reboot the new kernel)


This solved the problem for me

[tam]

Works here with my AMD64 3200+ Winchester, too. Because this patch still isn't in the official kernel, could this patch be part of the gentoo kernel ebuild?

[SAngeli]

Sorry for the silly question:

Fan speed is part of scaling?
I have implemented the kernel settings and all I do is echo ondemand > /sys.......... _governor....
The CPU speed goes down to about 1,000MHz, but the fan still speeds up to its max.

What is that I should do?
Is the patch part of this issue?
Thank you,
Spiro

[ripperd]

Sorry for the silly question:

Fan speed is part of scaling?
Spiro

No, the fan speed is part of "cool n quiet" in your bios, it is not software controlled.

[SAngeli]

sorry for keep asking questions, but wish to finalize my research/decision:

Is it or is not possible to allow somewhat package to adapt dynamically both cup and cpu fan speed?

If yes, please advice me which way to go. ( i am aware of cpudyn. Coud it be? )
If no, please advice me which way to go.

I appeal to you advices because I spent quite a few hours reading on the Internet and there are so many people try/fails ways of doing so.

I thank you so much for your time and help,
Spiro

[crazycat]

If anyone want to get pwm (fan speed) working on it87 , there is a patch availible. Check this post http://archives.andrew.net.au/lm-sensors/msg28629.html .

[SAngeli]

Hi crazycat,

as you kindly shared this info with us, could I ask you further questions?

Here they are:

1) I see you have a watercooled system. How quiet is it, in dBA and how many total fans are present?
2) I have Gentoo kernel version 2.6.11-r11 and lm_sensors version 2.8.7. My it87 module reports a broken BIOS (on my ASUS A8N-SLI Deluxe mobo); consequently, I am unable to get any kind of readings off the "sensors" command, but with gkrellm I see all info. Quite strange. I this available patch (dated Wed, 08 Dec 2004) already inplementer or not in my current kernel version (which is greater than what the patch refers to?
3) Are you able through the ondemand (or any other governor) to dinamically manage both cup and cpu-fan speed, accordingly? If now, how do you manage this issue?
4) Have you heard anything about cpudyn? Any good to implement, for Cool N Quite? I got this off this Gentoo Forum thread.

Thank you for your reply,
Spiro

[Cryogen Glacien]

I've got the San Diego core 3700+ and am getting the same error (No PSB or ACPI _PSS objects) as Opteron users are supposedly getting. I'm using the 2.6.12-r2 kernel with CK patches, and have the conservative, userspace, and ondemand governors compiled directly into the kernel. There's nothing past /sys/devices/system/cpu/cpu0; no governors, no speed information, nothing. My CPU seems to be set statically to 2245 MHz (204 x 11 as set in BIOS). My mainboard is an Abit AV8 Third Eye, which is notorious for problems with temperature monitoring and not having a LM-Sensors package. Anyone know what's going on and how I get PowerNow working?

[crazycat]

Hi crazycat,

as you kindly shared this info with us, could I ask you further questions?

Here they are:

1) I see you have a watercooled system. How quiet is it, in dBA and how many total fans are present?
2) I have Gentoo kernel version 2.6.11-r11 and lm_sensors version 2.8.7. My it87 module reports a broken BIOS (on my ASUS A8N-SLI Deluxe mobo); consequently, I am unable to get any kind of readings off the "sensors" command, but with gkrellm I see all info. Quite strange. I this available patch (dated Wed, 08 Dec 2004) already inplementer or not in my current kernel version (which is greater than what the patch refers to?
3) Are you able through the ondemand (or any other governor) to dinamically manage both cup and cpu-fan speed, accordingly? If now, how do you manage this issue?
4) Have you heard anything about cpudyn? Any good to implement, for Cool N Quite? I got this off this Gentoo Forum thread.

Thank you for your reply,
Spiro

1) The only fan is in my enermax power supply. I will mod it sometime. It is summer now so I enabled one extra 9cm fan on top of the case because I have passive cooling and it coolls my 3 hds more effectively. The devices that are watercooled are: oc'ed gf6800le +cpu + one of hd's.
with cat /sys/bus/i2c/drivers/it87/1-0290/temp2_input I have ca 45 celcius on ly cpu and ~53 on gpu after playing gta in windows and then booting into linux. No matter what you will hear the water pump if you won't kind of isolate it.

2) You can try to read the temperatures directly, just browse /sys/bus/i2c/drivers/it87/ and check the insides of *_input files. my temp2_input shows cpu temperature. As a matter of fact you dont have to have the right bios to change cpu frequency, you just have to write the correct msr's on the cpu. Try cpumsr program for windows to check if it works. I will try to program something myself when i have some time. If you write msr's directly you can also change voltage to watever you want. My athlon300+ can work stable at 950mv and 4x multiplier with direct msr writing but only with 1.3V through powernow.

3) do "cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors" to list governors and "echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor" to switch. The dynamicla fan could be programmed with a script which sleeps for 10 seks and then checks for temperature and chenges it with pwc interface which is still not present since 2.5.xx for it87. Since I dont have much need in fans i am not much motivated to patch it myself nor to write a script (I cannot scrit very good). Therefore i wrote one program with my amateurish c skills to monitor cpu temperature to shut down my pc immediately if the temperature exceeds the threshold. You can see the source of it in the FAQ thread in this forum. You can also monitor the fan in the same way (If some developer would bother himself to integrate pwc stuff for it87) as you monitor cpu temperature and react to it accordinaly. In bash it would be much more easier like if[ cat /sys/bus/i2c/drivers/it87/1-0290/temp2_input > ${lasttem}] echo ${newfrequency} > /sys/bus/i2c/drivers/it87/1-0290/fan1_pwc or something like that.

4) I dont know how to use cpudyn since i use governors. But I think it's just a simple daemon , nothing of the functionlity of cpumsr or speedfan.

[BlauwVoet]

I've compiled the governors as modules (uhm, don't ask me why, but I did)
anyone knows the names of these modules?
thanks

[crazycat]

Yeah and I bought me a pair shoes (uhm, don't ask me why, but I did) , can you tell me which color they have?
.....
But just in case you are a linux newbie look in your /lib/modules and my previous post might give you a hint how to use governors.

[BlauwVoet]

... look in your /lib/modules ...

that's what I've asked for, and that's all I wanted to know
no need to be sarcastic, but thanks anyway

by the way, they are called cpufreq_ondemand, cpufreq_powersave and cpufreq_userspace

[Voyageur]

Hi all

Is there any way to make the ondemand governer unresponsive to certain processes? I run seti@home at 19 nice and the CPU stays at max freq.

Old question, but you will find this thread interesting

Here Seti@home does not trigger CPU scaling running at nice 10 (2.6.12 kernel)

[bakaohki]

Just some tips from a newbie. I use the cpufreq-set command and the userspace governor: I control everything manually via a set of bash scripts and Fluxbox hotkeys. This might sound stupid, but I found that most applications work okay with the lowest speed - so I raise the speed only for rendering and compiling. After two or three hours of playing (especially with emulators) my cpu is quite hot, but the ondemand scheduler would raise the clock speed, since the cpu usage is around 100%.

For the fan speed I use the bios, but it still is noisy, so I gave up fighting with noise. The same goes for water cooling: I had water cooling for quite a time, but it still was noisy. The psu fans and the pump made some noise, not much though, but still it was audible.

[SAngeli]

Hi,

here is what I did (I hope it can be of help):
1) Cool N Quite under Linux Suks! I do not understand why nobody has never done something serious.
2) I solved my CPU fan by purchasing a manual speed regulator. I am able to manually set fan speeds from 0 to 12V for all my internal fans. I purchased Sunbeam Rheobus 5.25'' Controller It works very well. I do not have noise anymore, even from my GPU.
As for monitoring internal thermal components, I use gkrellm which gives me all temps I wish to see. This way I am able to adapt my fan speeds to temperature reported. Moreover, by doing so, I am able to use fully my CPU speed without sacrificing performance.

Untill linux will not come out with a fully functional Cool N Quite solution (a solution where CPU fan speed automatically adapts to CPU heat - which is a consequence of CPU speed -) I refuse to even consider Cool N Quite under linux.

Hope this helps.

take care,
Spiro

[stdPikachu]

CnQ doesn't have anything to do with the fans, it only affects the clockspeed and voltage of the processor.

Scaling fan speed dependant on how hot the chip is is a function of the BIOS on some motherboards (occasionally hooking into windows software apparently).

[danyer]

CnQ doesn't have anything to do with the fans, it only affects the clockspeed and voltage of the processor.

Scaling fan speed dependant on how hot the chip is is a function of the BIOS on some motherboards (occasionally hooking into windows software apparently).

Use fancontrol if you want to adjust fan speed with temperature of cpu. It's included in package lm_sensors.

CnQ and fan control works perfectly under linux, nothing sucks

[SAngeli]

Hi danyer,

let's resume it from your advice:
1) Does fancontrol automatically adapt CPU fan speed to CPU heat? If yes, please provide a howto.
If not, for a desktop (note not for a laptop) being able to scale CPU speed is pointless if I still have the noise produced by the CPU fan.

Perhaps I misunderstood Cool N Quite technology But, why should someone, on a desktop, lower CPU speed? I believe the answer is "no need". If so, then lowering CPU speed results in less performance and less heat produced by the CPU wich would require less rpm from the fan which ultimately would release less noise, which is what users look for. Correct so far? If not please address this point so I understand where I fail to.

Now, adapting, through fancontrol, CPU fan speed manually is crazy because I should be always be monitoring CPU heat. Concluding, my only option would be to have a system where CPU and fan would be managed together. If this is possible, dynamically and without any user interaction (other than just deciding the CPU behavior) then you are correct and am wrong.

CnQ and fan control works perfectly under linux, nothing sucks

Then I would kindly ask is you could share, step by step, the entire procedure (kernel setup, packages to install, scripts, and settings) the proper installation set.

Otherwhise, the discussion remains open for openions or whatever.

thank you,
Spiro