Messages in this thread |  | | From | Keith Owens <> | Subject | Re: [bug] usb-uhci locks up on boot half the time | Date | Thu, 09 Nov 2000 12:12:54 +1100 |
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On Wed, 08 Nov 2000 16:35:36 -0800, David Ford <david@linux.com> wrote: >Ok, in test10, for every 2 out of 5 boots, this particular workstation >locks up hard as it reaches the following: > >usb.c: registered new driver usbdevfs >usb.c: registered new driver hub >usb-uhci.c: $Revision: 1.242 $ time 15:53:47 Nov 8 2000 >usb-uhci.c: High bandwidth mode enabled >usb-uhci.c: USB UHCI at I/O 0xb400, IRQ 9 >usb-uhci.c: Detected 2 ports ><locks here, hard reset required>
Apply the kernel debugger patch[*], select "APIC and IO-APIC support on uniprocessors" then "NMI watchdog active for uniprocessors". Compile, install, reboot. When the machine hangs, NMI should drop into kdb after 5 seconds, 'bt' gives a backtrace.
ftp://oss.sgi.com/projects/kdb/download/ix86/kdb-v1.5-2.4.0-test10.gz
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