I've recently purchased a 2.5" external enclosure with usb2/fw800 to use with my laptop. Its based on the Oxford 922 chipset, which I've read is very fast and very stable.
Except with Linux...
I've googled all day, and found several thousand people running into the same sort of errors I'm getting with various dozens of other devices across all 2.6 kernel versions and all distributions. This can't be entirely chipset or hardware-related, if that many people are seeing it with that many different kinds of devices.
The error I'm getting looks like this:
Apr 11 17:04:15 angst kernel: usb 5-2.6: khubd timed out on ep0in
Apr 11 17:04:15 angst kernel: usb 5-2.6: device descriptor read/8, error -110
Apr 11 17:04:15 angst kernel: usb 5-2.6: new high speed USB device using ehci_hcd and address 10
Apr 11 17:04:20 angst kernel: usb 5-2.6: khubd timed out on ep0in
Apr 11 17:04:20 angst kernel: usb 5-2.6: device descriptor read/8, error -110
Apr 11 17:04:25 angst kernel: usb 5-2.6: khubd timed out on ep0in
Over and over, until it runs out of addresses, or shuts down the bus. I've used lots of external peripherals with this particular laptop without any problems, usb1, usb2, and firewire 400. I've used the usb ports on the laptop itself, as well as the usb ports provided by an extenal Adaptec usb2/firewire combo card. Everything works great... except this enclosure.
I've tried some of the suggestions I've found, turning acpi=off in the bios (I can't run with ACPI anyway, because I require suspend, and ACPI bricks my laptop when I suspend with it; another problem for another day), and 'noacpi'. Neither of those seemed to help at all.
I also tried a 2.4.30 kernel, which failed in an almost identical way. So far, nothing at all has worked.
I don't have a fw800 card or interface yet (I ordered the wrong enclosure, I wanted the usb2/fw400 one, but I got the fw800 one instead), so I'm going to try to get it working with the usb2 connection for now, and look into getting a fw800 pcmcia card later.
Moments before I decided to post this, I found the following link:
http://www.hollants.com/external_usb_controller_chips.html
This page seems to indicate that the Oxford 922 chipset doesn't work _at all_ with Linux. I'm not sure I trust it, but its the closest thing to my results I've seen.
What should I be looking for, or checking, to see if I can make this drive work? What kind of debug or dump information would be helpful for those on this list to help diagnose the problem?
Or should I just sell this on eBay and find another enclosure? (Returning it to the vendor isn't an option, since their return policy only allows repairs of the same unit or replacement with an identical unit).
Ideas anyone?
David A. Desrosiers [EMAIL PROTECTED] http://gnu-designs.com
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