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Description of problem:
I own two wireless adapters. A PCI one and an USB one. The USB one is a TP-LINK TL-WN321G model. I didn't install other modules or use NDISwrapper as everything was identified correctly and available (wlan2 for the USB adapter) for use.
I can use the USB adapter to connect to different wireless networks, so that's not the issue.
Problems that I encountered:
1. This one I couldn't replicate: I started to get errors while booting, ending with "Disabling IRQ19". Once I unplugged the USB adapter, the message was gone. The message was gone even when I plugged it back, in the same USB socket - I tried other, with same results - I couldn't get the kernel to show that message again.
2. If I use the USB adapter to connect to a wireless network, shutdown/restart will freeze. I get "Stopping NetworkManager... failed", than a couple of "Stopping XX... OK", and everything hangs when reaching "rpcbind". CTRL+ALT+DEL doesn't work. If I unplug the USB adapter, the process will resume.
3. If I use the PCI card to connect to a wireless network, leaving the USB one plugged, but unused, everything works fine.
And one more thing: when I was getting the "Disabling IRQxx" message from the kernel, the Avahi service also failed to stop and I was getting an extra notification, "Timer expired".
I use NetworkManager to connect to configure and connect to the wireless network.
Version-Release number of selected component (if applicable):
kernel-220.127.116.11-85.fc8 NetworkManager-0.7.0-0.6.7.svn3370.fc8 avahi-0.6.21-8.fc8
Steps to Reproduce:
1. Plug a wireless USB adapter.
2. Configure it and connect to a wireless network using NetworkManager.
3. Try to reboot/shutdown the computer.
The reboot/shutdown procedure will freeze.
To resume the reboot/shutdown process, just unplug the USB wireless adapter.
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