> I have a powerbook 12", and I'm running kernel 2.6.8-powerpc, Debian > Sarge PPC. If i use the USB port for my external hard-drive it goes > up to 15MB speed, which is fine. But, if I plug it out, use the usb > mouse, and plug the HD again, it goes like a USB 1 speed, that's no > more than 900 Kb/sec. > > Any idea why?
IIRC - the USB spec says that if you have devices of multiple speeds on the same bus/hub, the ENTIRE hub drops in speed to that of the slowest device. It is not clear from your description if you get the 900 kb/s with the mouse AND hard drive plugged-in together, or if it is with just the hard drive after you use and remove the mouse. If it is the former, that's just the behaviour of USB according to the spec. If it is the latter, it means the bus/hub still thinks there is a USB low-speed device attached, has not reset itself properly, and is still running in the low-speed mode. cheers vinai -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
