Messages in this thread | | | Date | Wed, 30 Jan 2002 09:58:26 +0100 (CET) | From | Daniel Nofftz <> | Subject | Re: [patch] amd athlon cooling on kt266/266a chipset |
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> System feels fast normally, and feels noticable slower with disconnected > feature. The problem with vlc is it's timing fragility to get smooth video > and synchronous audio output. (I also need alsa > 0.9.0 and XVideo scaling > on my Matrox G450 to get there, btw).
hi hans-peter
i have uploaded a new testing version of the patch to the webserver. you can get it from: http://cip.uni-trier.de/nofftz/linux/amd_cool_new.diff it is only a testing version and an attempt to fix this skippy behavior on video and audio playback. after some searching through athlon references i found some hints, how to set up the athlon processor to perform better when reconnected to the system bus. so i figgured out a way to make this processor setup from within the kernel (normaly it should be done by the bios). i am not sure whether it does that what i wanted, cause i have no sound video problems, so i need someone who tests this with a computer which has problems with the patch. maybee you could do this ? the new patch will modify a msr (mashine specific register) on the athlon cpu, which is used to reset the clock to the right value, when the bus is reconnected. i used a different setting, i found in one of the reference guides. i am not sure whether this is the right value to fix the problem, cause the documentation for the processor bug is only acessable by registerd bios programmer (i think ... i didn't find it until yet) ... so -... please give it a try and report whether the problems are going better with this new testing version. as befor, you have to enable acpi and acpi-processor ... then you have to enter amd_discconet=yes at lilo prompt and this time you also have to enter force_amd_clk=yes .... at booting time (dmesg) linux will say something like: Athlon/Duron CLK_Ctrl Value found : 6003d22f Enabling disconnect in VIA northbridge: KT266/266A chipset found. and ... when you have force_amd_clk enabed it will say something like "Athlon/Duron CLK_Ctrl Value set to: ....." ... please include this output in the replay ti me :)
if someone else with or without the problems want do give the patch a try: please include this output lines (the values that are found) in the posting .... expecialy i am interested to get the values from the people who have no problems with the patch :)
thanks ...
daniel
# Daniel Nofftz # Sysadmin CIP-Pool Informatik # University of Trier(Germany), Room V 103 # Mail: daniel@nofftz.de
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