Wireless network dies

[Peter Reed]

On Mon, 30 Jan 2012 19:07:03 -0600
Steven Stern <subscribed-lists at sterndata.com> wrote:

> Since installing the latest kernel,  3.2.2-1.fc16.i686.PAE, my
> wireless connection dies after several hours.  The access point is
> functioning normally -- all other devices continue to work.
> 
> Once this happens, NetworkManager shows that wireless is enabled, but
> shows no available networks. Stopping and restarting the service
> doesn't help. It's necessary to reboot to restore the network
> connection.
> 
> Here's /var/log/messages at the time it went away.
> 
> Jan 30 18:15:04 sds-desk kernel: [107165.004357] ath5k_hw_get_isr:
> ISR: 0x00000400 IMR: 0x00000000
> Jan 30 18:17:04 sds-desk kernel: [107285.004581] ath5k_hw_get_isr:
> ISR: 0x00000400 IMR: 0x00000000
> Jan 30 18:20:01 sds-desk systemd-logind[1047]: New session 229 of
> user root. Jan 30 18:20:01 sds-desk systemd-logind[1047]: Removed
> session 229. Jan 30 18:23:04 sds-desk kernel: [107645.004350]
> ath5k_hw_get_isr: ISR: 0x00000400 IMR: 0x00000000
> Jan 30 18:27:01 sds-desk systemd-logind[1047]: New session 230 of
> user root. Jan 30 18:27:02 sds-desk systemd-logind[1047]: Removed
> session 230. Jan 30 18:30:01 sds-desk systemd-logind[1047]: New
> session 231 of user root. Jan 30 18:30:01 sds-desk
> systemd-logind[1047]: Removed session 231. Jan 30 18:30:01 sds-desk
> systemd-logind[1047]: User root logged out. Jan 30 18:30:08 sds-desk
> kernel: [108068.152401] ath5k phy0: gain calibration timeout (2422MHz)
> Jan 30 18:30:08 sds-desk kernel: [108068.486736] ath5k phy0:
> calibration of channel 3 failed
> Jan 30 18:30:10 sds-desk kernel: [108070.521094] cfg80211: Calling
> CRDA to update world regulatory domain
> Jan 30 18:30:10 sds-desk kernel: [108070.806151] cfg80211: World
> regulatory domain updated:
> Jan 30 18:30:10 sds-desk kernel: [108070.806157] cfg80211:
> (start_freq
> - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
> Jan 30 18:30:10 sds-desk kernel: [108070.806162] cfg80211:   (2402000
> KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> Jan 30 18:30:10 sds-desk kernel: [108070.806168] cfg80211:   (2457000
> KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> Jan 30 18:30:10 sds-desk kernel: [108070.806172] cfg80211:   (2474000
> KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> Jan 30 18:30:10 sds-desk kernel: [108070.806177] cfg80211:   (5170000
> KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> Jan 30 18:30:10 sds-desk kernel: [108070.806182] cfg80211:   (5735000
> KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> Jan 30 18:30:10 sds-desk NetworkManager[1021]: <info> (wlan0):
> supplicant interface state: completed -> disconnected
> Jan 30 18:30:10 sds-desk NetworkManager[1021]: <info> (wlan0):
> supplicant interface state: disconnected -> scanning
> 
> and it repeats like this until I reboot.
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=785951
> 

You will have to revert to the previous kernel to get this to work
properly see the previous threds on this.  Seems to be a known problem.
Peter