Comment 55 for bug 1408963

Happened just now. Output from 'dmesg | grep wlan' below...

[ 41.595074] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 41.853714] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 43.634835] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 325.794164] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 385.767370] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 435.449149] wlan0: authenticate with 54:67:51:4d:6f:9f
[ 435.455242] wlan0: send auth to 54:67:51:4d:6f:9f (try 1/3)
[ 435.456070] wlan0: authenticated
[ 435.460078] wlan0: associate with 54:67:51:4d:6f:9f (try 1/3)
[ 435.493153] wlan0: RX AssocResp from 54:67:51:4d:6f:9f (capab=0x511
status=0 aid=2)
[ 435.494511] wlan0: associated
[ 435.494567] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[66243.425766] wlan0: deauthenticating from 54:67:51:4d:6f:9f by local
choice (Reason: 3=DEAUTH_LEAVING)
[66243.425883] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.427107] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.440134] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.441351] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.442580] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.460145] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.462442] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.472124] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.473361] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.474414] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.475532] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.488104] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.489265] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.490403] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.491586] wlan0: Failed check-sdata-in-driver check, flags: 0x0
[66243.508265] wlan0: Failed check-sdata-in-driver check, flags: 0x0

On 2 August 2016 at 10:14, Gil Gamesh <email address hidden> wrote:

> Yes, having gone away for 15.10, I'm getting this problem again. Less
> frequently, but the only way I've found to fix it is a reboot.
>
>
> On 2 August 2016 at 08:06, Eric <email address hidden> wrote:
>
>> Confirming bug still present with kernel 4.4.0-31 on 16.04. My wifi
>> actually goes 'dormant'.
>>
>> On Aug 2, 2016 00:41, "mxyzptlk" <email address hidden> wrote:
>>
>> > As Gena said -- happens multiple times a day on 16.04 with kernel
>> > 4.4.0-31. Still occurred with kernel 4.4.0-28, but less frequently.
>> >
>> > --
>> > You received this bug notification because you are subscribed to the bug
>> > report.
>> > https://bugs.launchpad.net/bugs/1408963
>> >
>> > Title:
>> > [Xbuntu 14.04, 14.10 and 15.04] Network manager stops working: iwl3945
>> > 0000:03:00.0: BSM uCode verification failed at addr ...; wlan0:
>> > deauthenticating from... by local choice (Reason: 3=DEAUTH_LEAVING),
>> >
>> > Status in linux-firmware package in Ubuntu:
>> > Confirmed
>> > Status in network-manager package in Ubuntu:
>> > Confirmed
>> >
>> > Bug description:
>> > From time to time, the system loses all wireles networks and kubuntu
>> > network manager applet goes blank - not even one network is shown. All
>> > wifi connections are broken. Rebooting fixes the issue, switching to
>> > WICD on-the-fly enables to continue browsing without rebooting, so it
>> > seems to be no hardware issue or iwl3945 issue.
>> >
>> > What to expect: stable connections and flawless network managing.
>> > What happens: so above.
>> >
>> > Further informations about the system, the network configuration, the
>> > package version can be found in the attachment, also parts of rsyslog
>> > and dmesg.
>> >
>> > Interesting, according to some helpers, are the following lines:
>> > dmesg: wlan0: deauthenticating from 02:26:4d:ac:8f:45 by local
>> choice
>> > (Reason: 3=DEAUTH_LEAVING)
>> >
>> > lsb_release -a
>> > No LSB modules are available.
>> > Distributor ID: Ubuntu
>> > Description: Ubuntu 14.10
>> > Release: 14.10
>> > Codename: utopic
>> >
>> > apt-cache policy network-manager
>> > network-manager:
>> > Installiert: 0.9.8.8-0ubuntu28
>> > Installationskandidat: 0.9.8.8-0ubuntu28
>> > Versionstabelle:
>> > *** 0.9.8.8-0ubuntu28 0
>> > 500 http://de.archive.ubuntu.com/ubuntu/ utopic/main amd64
>> > Packages
>> > 100 /var/lib/dpkg/status
>> >
>> > To manage notifications about this bug go to:
>> >
>> >
>> https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1408963/+subscriptions
>> >
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1408963
>>
>> Title:
>> [Xbuntu 14.04, 14.10 and 15.04] Network manager stops working: iwl3945
>> 0000:03:00.0: BSM uCode verification failed at addr ...; wlan0:
>> deauthenticating from... by local choice (Reason: 3=DEAUTH_LEAVING),
>>
>> Status in linux-firmware package in Ubuntu:
>> Confirmed
>> Status in network-manager package in Ubuntu:
>> Confirmed
>>
>> Bug description:
>> From time to time, the system loses all wireles networks and kubuntu
>> network manager applet goes blank - not even one network is shown. All
>> wifi connections are broken. Rebooting fixes the issue, switching to
>> WICD on-the-fly enables to continue browsing without rebooting, so it
>> seems to be no hardware issue or iwl3945 issue.
>>
>> What to expect: stable connections and flawless network managing.
>> What happens: so above.
>>
>> Further informations about the system, the network configuration, the
>> package version can be found in the attachment, also parts of rsyslog
>> and dmesg.
>>
>> Interesting, according to some helpers, are the following lines:
>> dmesg: wlan0: deauthenticating from 02:26:4d:ac:8f:45 by local choice
>> (Reason: 3=DEAUTH_LEAVING)
>>
>> lsb_release -a
>> No LSB modules are available.
>> Distributor ID: Ubuntu
>> Description: Ubuntu 14.10
>> Release: 14.10
>> Codename: utopic
>>
>> apt-cache policy network-manager
>> network-manager:
>> Installiert: 0.9.8.8-0ubuntu28
>> Installationskandidat: 0.9.8.8-0ubuntu28
>> Versionstabelle:
>> *** 0.9.8.8-0ubuntu28 0
>> 500 http://de.archive.ubuntu.com/ubuntu/ utopic/main amd64
>> Packages
>> 100 /var/lib/dpkg/status
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1408963/+subscriptions
>>
>
>