Processor frequency control on ASUS laptops
Hi,
I've been recently reminded about the GFRQ/SFRQ methods in some ASUS notebooks DSDT's, which apparently are used by the Windows ASUS driver to manage processor performance. Before adding "just another cool way to control processor performance", I'd like to ask if there is _anybody_ running an ASUS laptop, for whom the processor performance control doesn't work either with ACPI performance driver, or the updated ports of speedstep driver (the one that supports K7 and is said to support Pentium-M)? Best regards,
Signature · 9 lines
Karol 'sziwan' Kozimor sziwan-DETuoxkZsSqrDJvtcaxF/[email protected] ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01
A message that is not in the archive (sent off-list or not yet received): 20030725181031.GA19588-DETuoxkZsSqrDJvtcaxF/[email protected]
Well, the cpufreqd daemon/cpufreq patch (for 2.4.21) managed to give my L2D (Mobile Athlon 4 1.600+) only some hard hangs, and random locks... I had to give up on them. And since I was unable to get 2.6.0-test1 to work acceptably with devfsd...
I also have the latest acpi patches for 2.4.21, and that didn't help too.
Too bad, because the powernow windows driver manages to squeeze a few hours out of the battery.
---
Jose Bernardo B R Silva | Source Mage GNU/Linux Section Guru
[email protected] | http://www.sourcemage.org
http://counter.li.org #245602
http://cosmos.oninetspeed.pt/jose.bernardo
jbs-RxTL4PDuTKm/RHH9vPZxQFaTQe2KTcn/@public.gmane.org
---------- Original Message -----------
From: Karol Kozimor <sziwan-DETuoxkZsSqrDJvtcaxF/[email protected]>
To: [email protected], [email protected]
Cc: Sebastian Henschel <[email protected]>, "Rainer M." <rmuehlhoff-52dn/[email protected]>, "Carlo E. Prelz" <[email protected]>
Sent: Fri, 25 Jul 2003 20:10:31 +0200
Subject: [Acpi4asus-user] Processor frequency control on ASUS laptops
Quoted 19 lines
Hi,
I've been recently reminded about the GFRQ/SFRQ methods in some ASUS notebooks DSDT's, which apparently are used by the Windows ASUS driver to manage processor performance. Before adding "just another cool way to control processor performance", I'd like to ask if there is _anybody_ running an ASUS laptop, for whom the processor performance control doesn't work either with ACPI performance driver,
or the updated ports of speedstep driver (the one that supports K7
and is said to support Pentium-M)? Best regards,Signature · 8 lines
Karol 'sziwan' Kozimor sziwan-DETuoxkZsSqrDJvtcaxF/[email protected] ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET.
http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01
Quoted 4 lines
_______________________________________________
Acpi4asus-user mailing list [email protected]
https://lists.sourceforge.net/lists/listinfo/acpi4asus-user
------- End of Original Message -------
-------------------------------------------------------
This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET.
http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01
Re: Processor frequency control on ASUS laptops. And, how to switch video outputs?
In reply to a message not in the archiveSubject: Processor frequency control on ASUS laptops Date: ven, lug 25, 2003 at 08:10:31 +0200
Quoted 7 lines · Karol Kozimor
I've been recently reminded about the GFRQ/SFRQ methods in some ASUS notebooks DSDT's, which apparently are used by the Windows ASUS driver to manage processor performance. Before adding "just another cool way to control processor performance", I'd like to ask if there is _anybody_ running an ASUS laptop, for whom the processor performance control doesn't work either with ACPI performance driver, or the updated ports of speedstep driver (the one that supports K7 and is said to support Pentium-M)?
Your mail gave me the motivation to have a look at the cpu-freq stuff that is present on the 2.6.0test kernel. This also required that I make contact with this 'sysfs' virtual filesystem, that I had earlier never heard about. I do happily announce that on my Asus M3700N (centrino-based) the /sys/class/cpu/cpu0/cpufreq interface indeed works, and I can set the CPU frequency to any frequency between 600000 and 1500000 Hz (at least, /proc/cpuinfo shows appropriately modified speed and bogomips fields).
The acpi interface is a bit more obscure for me. I can echo a number between 0 and 7 to /proc/acpi/processor/CPU1/throttling, and the setting apparently changes accordingly, although I have no idea about how to verify what really is happening. The 'power' file contains the following:
active state: C1
default state: C1
bus master activity: 00000000
states:
*C1: promotion[C2] demotion[--] latency[000] usage[00000000]
C2: promotion[C3] demotion[C1] latency[001] usage[00000000]
C3: promotion[--] demotion[C2] latency[101] usage[00000000]but it is a read-only file, and I could not modify the active state. And the info file contains this:
processor id: 0 acpi id: 1 bus mastering control: yes power management: yes throttling control: yes performance management: no limit interface: yes
which seems to indicate to me that I cannot do performance management through acpi.
I don't know if this is of help to you. Ask me if you need that I do some specific check.
I do have another asus-related question, though. I read somewhere that the method to switch video output between LCD and an external CRT was to send specific numbers to /proc/acpi/asus/disp. Well, in my case the content of this file is always 65535, and nothing happens whatever number I send to the file. There is another file in the directory, called lcd. It contains 1, and if I try to send other numbers to it, the number does not change, and I find the following message:
Asus ACPI: Error switching LCD
in the log file. I am afraid the problem has to be traced to the framebuffer driver: the person who developed the driver for Linux 2.4 (David Dawes) told me that he has no plans to do the conversion to the new fb architecture in 2.6, and I am thus using the sub-optimal vesa driver (and in 2.4 Dawes' driver did not work with the Intel 855GM chip that is included in my laptop (freezing at boot when it should have switched to framebuffer usage)).
But maybe there is some acpi magic that can perform the output switch...
In all cases, have a good day. There is nothing urgent here.
Carlo
Signature · 10 lines
* Se la Strada e la sua Virtu' non fossero state messe da parte, * K * Carlo E. Prelz - [email protected] che bisogno ci sarebbe * di parlare tanto di amore e di rettitudine? (Chuang-Tzu) ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01