Red Hat Bugzilla – Bug 248783
USB input death then system freeze
Last modified: 2007-11-30 17:12:10 EST
All the info is in the upstream bug
*** Bug 248556 has been marked as a duplicate of this bug. ***
I continue to have USB loss and eventual system freeze with all kernels after
kernel-PAE-2.6.23-0.15.rc0.git1.fc8, including today's
kernel-PAE-2.6.23-0.41.rc0.git14.fc8. (0.15.rc0.git1 is the last stable kernel
I do not see any pattern in /var/log messages.
My system is a Thinkpad X60.
What info/debugging can I provide?
upstream devs want usbmon traces. look at the bugzilla.kernel.org bug
OK. Read instructions....
Will setup and collect....
I've been applying the patch filed upstream for the past several kernel
packages. 'Fixes for me'.
For me, the issue seems to be 'slow USB' devices (e.g., mouse/keyboard) on EHCI
The patch refers to nVidia controllers, although I believe I have 'slow devices'
connected to Intel ICH7 EHCI through the Thinkpad X60 dock.
Both upstream and Fedora patches attached here:
I'm not sure what more to do to push this upstream, or if this is already
working its way through the process.
This appears to 'work for me' with kernel-2.6.23-0.129.rc3.git4.fc8.
That likely, or am I just seeing random stuff....
I don't think you're seeing stuff, that's the first post 2.6.22 rawhide kernel
that seems to work here (but this bug didn't always trigger fast on my system,
so it's a bit early to declare the bug closed)
The matter is being worked upon by Stuart. Linus backed out his original
fix for EHCI losing data when CPU frequency changed, so this is probably
what you two are seeing.
Start around here and navigate down thread:
I hit something similar to this recently, on a 2.6.23-rc7 kernel. The upstream
bug is months old and still in NEW. Is this thought to be fixed upstream, or are
we still waiting for a patch to land?
Err, of course, there is another possible explanation: I am seeing something
entirely different and should file that bug elsewhere. I checked the logs and
the telltale "drivers/hid/usbhid/hid-core.c: input irq status -75 received"
message is not there. So probably I'm seeing something else.
Still, I'd like to know if this is supposed to be CLOSED UPSTREAM or if it's
still an open issue.
IMHO it's closed upstream or at least I'm not hitting it anymore on my system
(both on mm and fedora kernels)
Will, this bug tracks what was happening to Nicolas, e.g. the fallout from
Stuart's attempts to fix EHCI coughing up a lung upon a CPU frequence change.
If you hit a specific issue with USB, please file a new bug. Likely the root
cause is different.
I'll close this bug now to avoid confusion.