WiFi permanently disappeared after booting test kernel

Mike Fleetwood mike.fleetwood at googlemail.com
Thu Jan 31 22:19:40 UTC 2013


Hi,

On my netbook I booted a test kernel 3.8.0-rc4+ I compiled.  Now after
booting back into my regular Fedora kernel 3.6.11-5.fc17.i686.PAE my
wifi network device remains permanently disappeared.  No wifi networks
displayed in Network Manager gui.  Also the Network Manager syslog
messages make it look like the device has completely disappeared.

Suggestions for restoring wifi welcome.

Thanks
Mike


Fragment of Network Manager syslog messages when working before
--8<--
Jan 18 23:01:53 edge NetworkManager[479]: <info> monitoring kernel
firmware directory '/lib/firmware'.
Jan 18 23:01:53 edge NetworkManager[479]: <info> rfkill2: found WiFi
radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.3/0000:01:00.0/ieee80211/phy0/rfkill2)
(driver ath9k)
Jan 18 23:01:53 edge NetworkManager[479]: <info> rfkill0: found WiFi
radio killswitch (at /sys/devices/platform/eeepc/rfkill/rfkill0)
(platform driver eeepc)
Jan 18 23:01:53 edge NetworkManager[479]: <info> rfkill4: found WWAN
radio killswitch (at /sys/devices/platform/eeepc/rfkill/rfkill4)
(platform driver eeepc)
Jan 18 23:01:53 edge NetworkManager[479]: <info> WiFi enabled by radio
killswitch; enabled by state file
Jan 18 23:01:53 edge NetworkManager[479]: <info> WWAN enabled by radio
killswitch; enabled by state file
Jan 18 23:01:53 edge NetworkManager[479]: <info> WiMAX enabled by
radio killswitch; enabled by state file
Jan 18 23:01:53 edge NetworkManager[479]: <info> Networking is enabled
by state file
...
Jan 18 23:01:53 edge NetworkManager[479]: <info> (wlan0): using
nl80211 for WiFi device control
Jan 18 23:01:53 edge NetworkManager[479]: <warn> (wlan0): driver
supports Access Point (AP) mode
Jan 18 23:01:53 edge NetworkManager[479]: <info> (wlan0): new 802.11
WiFi device (driver: 'ath9k' ifindex: 3)
Jan 18 23:01:53 edge NetworkManager[479]: <info> (wlan0): exported as
/org/freedesktop/NetworkManager/Devices/1
Jan 18 23:01:53 edge NetworkManager[479]: <info> (wlan0): now managed
Jan 18 23:01:53 edge NetworkManager[479]: <info> (wlan0): device state
change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jan 18 23:01:53 edge NetworkManager[479]: <info> (wlan0): bringing up device.
...
Jan 18 23:01:59 edge NetworkManager[479]: <info> Activation (wlan0)
successful, device activated.
Jan 18 23:01:59 edge NetworkManager[479]: <info> Activation (wlan0)
Stage 5 of 5 (IPv4 Commit) complete.


Fragment of Network Manager syslog messages when broken after
--8<--
Jan 28 18:43:26 edge NetworkManager[466]: <info> monitoring kernel
firmware directory '/lib/firmware'.
Jan 28 18:43:26 edge NetworkManager[466]: <info> rfkill0: found WiFi
radio killswitch (at /sys/devices/platform/eeepc/rfkill/rfkill0)
(platform driver eeepc)
Jan 28 18:43:26 edge NetworkManager[466]: <info> rfkill2: found WWAN
radio killswitch (at /sys/devices/platform/eeepc/rfkill/rfkill2)
(platform driver eeepc)
Jan 28 18:43:26 edge NetworkManager[466]: <info> WiFi disabled by
radio killswitch; enabled by state file
Jan 28 18:43:26 edge NetworkManager[466]: <info> WWAN enabled by radio
killswitch; enabled by state file
Jan 28 18:43:26 edge NetworkManager[466]: <info> WiMAX enabled by
radio killswitch; enabled by state file
Jan 28 18:43:26 edge NetworkManager[466]: <info> Networking is enabled
by state file

No (wlan0) related NetworkManager syslog messages afterwards at all.


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