Submit Hint Search The Forums LinksStatsPollsHeadlinesRSS
14,000 hints and counting!


Click here to return to the 'Downgrade the 10.2.5 USB drivers to end kernel panics' hint
The following comments are owned by whoever posted them. This site is not responsible for what they say.
Downgrade the 10.2.5 USB drivers to end kernel panics
Authored by: el bid on May 03, '03 03:59:17AM

Just want to report that:

a) my G4 PowerMac experienced a definite and persistent kernel
panic in 10.5.2, evidently caused by the failure of the latest
IOUSBFamily kernel extension in conjunction with the 4-way USB hub
in my CTX LCD monitor. There are many other reports of similar
kernel panics with other USB devices.

b) the problem has been definitively fixed here (as definitively as it
is possible to be in this business) by retrograding the IOUSBFamily
kernel extension as recommended by A. Brody. There's been no
sign of the kernel panic since.

I suggest this approach should be the first line of defence for any
10.2.5 users experiencing USB-related kernel panics. Buying a new
hub and/or switching to Windows XP probably won't even need to be
considered... :-)

---
--
el bid



[ Reply to This | # ]
Downgrade the 10.2.5 USB drivers to end kernel panics
Authored by: Ganymede on May 03, '03 11:22:08AM

I concur whoe-heartedly with el bin. I am steeped in the middle of a very intensive project, with dozens of customers throught my state dependent on me responding in a timely fashion; I cannot afford any downtime on my system at home (from which I work). How foolish of me to upgrade then, just because the upgrade came out...
Kernal panics started in on my 733 G4 with Belkin USB 4-port hub (Blue) immediately, non-stop, VERY consistently. Removed the hub, and all problems disappeared. Once bitten, I was twice shy to make any other changes...
(Note: there are two models of Belkin hubs, and I see that my "Blue" has been discontinued. Nonetheless, I believe the problem is in the driver - so many other USB device configurations reported problems; they're only failing on Macs? nahh..)
Finally "downgraded" the IOUSB family driver. Even then I didn't re-install the hub... until an hour ago. System is up, hub is online, with printer connected and working. No problems so far...
So now, it's back to work!

ps macosxhints is the most helpful & informative forum I have seen - by far the best! Thanks :)



[ Reply to This | # ]