Red Hat Bugzilla – Bug 146187
[RHEL4RC1] chicony usb keyboard fails, with side effects
Last modified: 2007-11-30 17:07:16 EST
Description of problem:
We have a Dell Chicony USB keyboard (model KU-9985) which fails to
work when plugged in. There are ugly messages in /var/log/messages,
and "lsusb" will hang.
It turns out that this keyboard says that it has both a keyboard and
a mouse, though there really is no mouse at all (no PS/2 port, no
mouse). When Linux issues a "get_report" for the mouse reports, the
keyboard stalls, and things go downhill.
This keyboard works fine if we add it to the blacklist with
the "NOGET" quirk.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot up system.
2. Plug in KU-9985 Chicony usb hub keyboard.
Keyboard doesn't work, there are ugly messages, and "lsusb" will hang.
Keyboard should work, lsusb should work normally.
I will attach the patch.
Created attachment 110214 [details]
patch to add keyboard to blacklist with "noget" quirk
Vojtech accepted this but did not notify me. I'm going to post
this to review in a few hours. U2?
U2 is fine. Thanks!
Modified in 2.6.9-11.30.EL (actually before that, but I have verified
it on this version).
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.