Good news.
Mifki just added an extra feature to his kernel that is automatic detection
of your FSB frequency, so you don’t need to specify it at boot time anymore :)
You should test this as some reported it works, and some not.
Feel free to post your comments here.
We are just curious to see how many MacGeek visitors are using the last 10.4.8 kernel.
Check out the poll in the right sidebar!
Check poll results by Geo location with Google Maps:
Our old school James Bond :) TomH just made a nice comparison of both semthex
and mifki modded kernel source code. Check it out!
The default value for FSB is 200 Mhz if you do not specify anything.
So you should check your motherboard spec and the CPU you are using.
I was booting with 200 Mhz but in fact needed 133 Mhz. (Pentium D805 is 533 Mhz).
Thus my clock was too slow, and sound was crap.
Let say your motherboard support 533 and 800 Mhz FSB, but your processor is 533 Mhz.
Then you should set FSB at boot to 533/4 = 133 Mhz.
It is very IMPORTANT that you set the correct FSB speed.
Mifki just released a new version of his 10.4.8 kernel.
Now you can specify the frequency of the FSB as a boot option.
fsb=<mhz>
Download here: www.filefactory.com/file/f618b4
Semthex kernel does also include the possibility at boot to choose a FSB frequency.
The default value is 200Mhz. If you want different value, you have 3 possibilities.
For 100 Mhz: use the -g boot option flag
For 133 Mhz: use the -y boot option flag
For 166 Mhz: use the -z boot option flag
Tips:
Once you know your FSB, you can put it as default value for your boot args. Just edit: /Library/Preferences/SystemConfiguration/com.apple.Boot.plist
You should set this if using semthex kernel and 133 Mhz FSB:
<key>Kernel Flags</key>
<string>-y</string>
This is for people who have rosetta crashing, mine is workin well, just tried Photoshop, Word, Powerpoint, etc…
No crash at ALL!
Seen my previous post about first boot in 10.4.8 with new kernel? Well, it seems you have to do this command at each boot (update_prebinding),
otherwise Rosetta will crash on the second PPC app you run after boot.
So guess what, JaS just got a fix for that, so it will work after every reboot
and you don’t have to worry about it anymore.
Download:
Instructions by JaS:
Read more…
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