Hi all,
We have developed an USB HID kernel driver for a basic input device. We have
also followed the driver matching criteria suggested by Apple to a greater
extent. And the driver works (driver matching also) efficiently as expected.
So far so good....
But we are facing a strange problem, due to which I had to post this query.
We have tested our driver in various machines and OS. The machines vary from
an iMac G3 350 MHz to recent G5 (and OS from MAc OS X.1.3 to Mac OS X.2.7).
The driver is fine in most of the machines except in a G4 Cube and an iMac
G3 400 MHz machine.
Considering two identical G4 Cube machines, the driver matching fails in one
of them. We have loaded fresh copy of the Mac OS X.2.0 (even the build
number) on both the machines and used the same testing device (VID, PID are
same). In one of the machines, Apple USB HID driver gets loaded instead of
vendor specific driver developed by us.
We have read through mostly all the driver matching related mails in this
mailing list. We have also tried various driver matching options in
IOPersonality. We have also tried many dumb things!
Can anyone think of any outside chance for these kind of issue? Thanks in
advance for any suggestions.....
Best Regards
Srinidhi
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Robosoft Technologies - Partners in Product Development
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