|Summary:||Plugging in usb wireless adapter immediately hangs system|
|Product:||[Fedora] Fedora||Reporter:||Mike C <mike.cloaked>|
|Component:||kernel||Assignee:||John W. Linville <linville>|
|Status:||CLOSED CURRENTRELEASE||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Fixed In Version:||kernel-2.6.25-0.234.rc9.git1.fc9||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2008-04-16 12:24:04 UTC||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Mike C 2008-04-08 08:04:09 UTC
Description of problem:Plugging in Edimax EW-7318UG (version V3.0B) usb wireless adapter immediately hangs the system. Alt-SysRq-b is needed to reboot. Version-Release number of selected component (if applicable):kernel-2.6.25-0.200.rc8.git3.fc9.i686 (also .201 and .204) How reproducible:Every time Steps to Reproduce: 1. Boot machine without wireless adapter plugged in 2. Plug in wireless adapter 3. Actual results: System immediately hangs, and there is no response from mouse/keyboard or ctrl-alt-backspace (desktop is kde and login manager is kdm) Alt-Sysrq-b will reboot the machine. Expected results: System should continue working with the rt73usb module loaded correctly so that wireless communication can then be established using wpa_supplicant. Additional info: Kernels from .185 and earlier worked fine with this adapter. wpa_supplicant works fine with kernels up to .185 but will not work with .200 through .204 since as soon as the wireless adapter is plugged in the system crashes. With kernel .204 the only entry in /var/log/messages was: Apr 7 21:55:37 rawhide kernel: usb 1-1: new full speed USB device using uhci_hcd and address 2 The hardware is http://www.smolts.org/client/show/pub_c02c95fc-b8de-4916-85fe-cf1c96f33f7e
Comment 1 Pete Zaitcev 2008-04-08 17:40:21 UTC
It's likely the rsyslogd is unable to write the crash into files. What does happen if you're on text console when you plug it in? Please do this: <Ctrl><Alt>F1 log in as root echo 8 > /proc/sys/kernel/printk resizecons -lines 50 plug the adapter in At this point you are likely to see a traceback which can be taken with a camera (capturing it with netconsole would be even better, but that requires reading Documentation/networking/netconsole.txt which is confusing and out of date, then installing netcat (which RPM is named "nc" in Fedora)).
Comment 2 Mike C 2008-04-09 08:09:06 UTC
Created attachment 301760 [details] Screen showing output immediately after plugging in usb adapter Following #1 this is the screen a few seconds after logging in to KDE, then switching to an alternative console and logging in as root, and setting up to print diagnostics. After 20 seconds more text appears on the screen and the next image shows the further lines output.
Comment 3 Mike C 2008-04-09 08:10:22 UTC
Created attachment 301761 [details] Screen about 20 seconds after image in previous attachment About 20 seconds later there are further lines.
Comment 4 Mike C 2008-04-09 21:36:18 UTC
Created attachment 301900 [details] printk captured via netconsole (equivalent to images above) I managed to get a capture on a second machine on the same network using netconsole. Here is the capture.
Comment 5 John W. Linville 2008-04-15 20:37:39 UTC
A patch to correct this should be available in kernel-2.6.25-0.234.rc9.git1.fc9 or later...probably available tomorrow or the next day...FYI! :-)
Comment 6 John W. Linville 2008-04-15 21:28:52 UTC
Comment 7 Mike C 2008-04-16 09:40:56 UTC
Thanks John - will test this later today or tomorrow.... and report back.
Comment 8 Mike C 2008-04-16 10:37:22 UTC
kernel-2.6.25-0.234.rc9.git1.fc9 resolves this bug and wireless now works nicely again. This bug can now be closed. Thanks for working on this.