Red Hat Bugzilla – Bug 244024
2.6.9-55 breaks USB on W2100z so unusable
Last modified: 2007-11-16 20:14:56 EST
Description of problem:
The latest kernel, 2.6.9-55, breaks USB on Sun Java Workstation W2100z's.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Keyboard and mouse don't work (though kudzu does not detect the USB controllers
as missing). The machine is therefore unusable.
Keyboard and mouse work, users are able to also.
I suspect this is due to a conflict with having 2 different USB hubs in the
[root@poisson ~]# lspci | grep USB
01:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b)
01:00.1 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b)
01:03.0 USB Controller: NEC Corporation USB (rev 43)
01:03.1 USB Controller: NEC Corporation USB (rev 43)
01:03.2 USB Controller: NEC Corporation USB 2.0 (rev 04)
It is possible to turn off the USB 2.0 controller in the BIOS setup (and then
the fifth output line above disappears), but not to turn off either all NEC or
all AMD controllers.
However, kernels up to 2.6.9-42.0.3.EL work fine, so the bug has been introduced
recently. I did not try 2.6.9-42.0.10.EL yet, but can do so if it would help.
Can you be more specific and tell us the exact version of the last working kernel?
Sure, but it will have to be Monday now as the machines have jobs running and
it's the weekend here. I'll post when I have the results.
Well, 2.6.9-42.0.10.EL works - but so does 2.6.9-55.0.2.EL so consider this fixed.
Hmm, very odd. I wonder if it has something to do with with HCD load