USB2 trouble: EHCI HCD died

[Michael J Gruber]

Sorry for cross-posting, but this refers to FC3 and FC4 alike:

I have an external USB2 hard disk and a PCMCIA USB2 controller. With 
kernel 2.6.5 (Knoppix) both are recognized, EHCI picks up the device and 
runs it at "high speed" (USB2 speed); on two different laptops (Dell and 
Toshiba, both Intel 32 architecture).

With FC3 and the standard kernel-2.6.9-1.667, the USB2 controller is 
recognized and EHCI picks up. When I plug in the USB2 hard disk, EHCI 
gives up on it (ehci_hcd 0000:03:00.2: fatal error, ehci_hcd 
0000:03:00.2: HC died; cleaning up), OHCI picks up instead and drives 
the device at "full speed" (USB1 speed). Of course the drive works this 
way, but about 20 to 40 times slower than with kernel 2.6.5. This 
happens with kernel .681 as well, on the two different laptops mentioned 
above.

I hoped 2.6.10 would cure this, but the same happens when I run FC3 with 
the FC4 kernel 2.6.10-1.1063_FC4; that's why I am cross-posting to the 
test-list. (The FC4 kernel works nicely on FC3 otherwise.)

Has anyone experienced symptoms like these? Is anyone driving USB2 
devices at high speed successfuly with FC3/4?

Thanks for any hints!
Michael
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