Applespider said:Strangely, it's the newer Powerbooks that seem to have problems. They seem to be the ones where, under Tiger, the system brightness isn't working (does it not work even if on auto-brightness?), the trackpad can go a little loopy, the kernel task takes up too much CPU etc.
My old Powerbook, like Munkle's, seems to be just fine.
it's a little bit of a wild guess. but remember when 10.3.8 fixed the wake from sleep bug on powerbooks. this bug was really fixed for some, but it appeared for others (incl. me) only with 10.3.8.
probably the components in the pb's are not exactly the same. maybe there are different versions or firmwares of a certain chip controlling the pb hardware. so when the let tiger control hardware stuff the either do it right for one group or the other.
i never got my fax modem to work properly under panther, no matter what install or version. since tiger it works perfect. maybe i have a chip version that never was set up right in panther.
apple not necessarily knows all this production details. who knows what exact chip the solder in the pb's anyway
as i said, just a guess. but it would explain why it is so hard for apple to get that basic hardware stuff right.