kern/39093: usb doesn't work anymore on IBM T43p

[ks%ub.uni-mainz.de@localhost]

>Number:         39093
>Category:       kern
>Synopsis:       usb doesn't work anymore on IBM T43p
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 03 16:40:01 +0000 2008
>Originator:     Kurt Schreiner
>Release:        i386  -current as of Jul  3 17:32 MEST
>Organization:
>Environment:
NetBSD ipaddi 4.99.69 NetBSD 4.99.69 (PADDI) #337: Thu Jul  3 17:48:37 MEST 
2008  ks@ipaddi:/u/NetBSD/arch/i386/obj/sys/arch/i386/compile/PADDI i386
>Description:
Since some days (June 27 to be precise) I see the following in 
/var/log/messages:
Jul  3 18:12:00 ipaddi /netbsd: uhci3: host controller process error
Jul  3 18:12:00 ipaddi /netbsd: uhci3: host controller halted
Jul  3 18:12:00 ipaddi /netbsd: uhci1: host controller process error
Jul  3 18:12:00 ipaddi /netbsd: uhci1: host controller halted
Jul  3 18:12:00 ipaddi /netbsd: uhci2: host controller process error
Jul  3 18:12:00 ipaddi /netbsd: uhci2: host controller halted
Jul  3 18:12:02 ipaddi /netbsd: uhci0: host controller process error
Jul  3 18:12:02 ipaddi /netbsd: uhci0: host controller halted

The system feels verry sluggish to use (in- and output stalls for seconds to 
minutes) hanging hard (power button needed to reset) after some time. 
Additionally system gets very hot being eventually powered down by BIOS (if 
power button isn't used before).

Note: Only the kernel is changed. There are no modifications done to the 
hardware or BIOS settings!

Playing w/ BIOS settings has no effect, btw.


>How-To-Repeat:
Take an IBM T43p, use a -current kernel w/ uhci and have "fun"...
>Fix:
There's no real fix that I know of, but there are at least 2 workarounds:

 a) use an older kernel! Last good one I have is from Jun 14.

 b) comment out uhci from your config file and compile a kernel w/o
    uhci! (Thats what I'm running now.)