Ouch! That sounds like a problem we may need to look at. It's
possible it's already fixed for future OS releases. As you can
imagine error handling during enumeration failures can be difficult
to test (unless you have a device failing enumeration!). Is the
port only "stuck" at one speed? (ie, Hi-speed doesn't work, but
Full-speed/Low-speed does?)
There are no significant differences in HW with your new 17"
Powerbook, but the software could be different.
Regards,
David Ferguson
USB Software Team
Apple Computer
At 10:53 PM -0500 2/22/05, Juan Pablo Pertierra wrote:
I am developing a high speed device which will work primarily with
macs. I have been using as test hosts a PC and my old powerbook 17"
1.33Ghz. Whenever there was any problem in negotiation or
setup/enumeration, i could just unplug the device, fix the bug and
the plug it back in and the computer attempted to enumerate as
normal. This is also the way it works with the PC.
However, I just purchased a new powerbook 17" 1.67Ghz. Now,
whenever my device does not respond correctly or there is any
problem in enumeration, when i disconnect the device and connect it
again, the port is 'frozen' and doesn't do anything at all. I've
tried other devices and port will not work with anything. I have to
reboot the entire system for it to work again.
I've tried the exact same device on the PC, and it has no problem
attempting enumeration again simply by unplugging it and plugging it
back in.
Are there any changes in the hardware/software of this new powerbook
that could cause this? I had the latest upgrade of OSX on my old
powerbook, i was under the impression that the software is the same
on this machine. Maybe the USB controller/phy are different now?
Thanks!
Juan
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