Created attachment 212996 [details]
syslog-2012-04-27

When NetworkManager reconnects after wlan deauthentication, the connection sometimes is unusable until full reconnect is manually requested. These deauthendications happen only with my home network (I have a custom "Netia Spot" wireless router from my ISP at home), I have no problems with my university networks.

I'm attaching syslog output which shows kernel and NetworkManager messages. As can be seen (use `grep '\(Reason: 6\|user-req\)'`), deauthentications happen quite often but only after two of them my connection was unusable - they are followed by manual disconnect+connect through nm-applet.

When connection breaks, `ping` running in the background outputs nothing for a while, and then outputs "Destination Host Unreachable" messages. Trying to run `ping` when the connection is already broken ends in ping exiting after timeout or something.

I don't have any problems on Windows 7 on the same machine, although I don't know whether it doesn't have problems with deauthentications or if it is able to always quickly restore the connection.

NetworkManager version: 0.9.4.0 (0.9.2.0 had the same problem, earlier not tested)
Kernel version: 3.3.3 (3.0 had the same problem, earlier not tested)

Wireless network adapter (lspci -vnn):
02:00.0 Network controller [0280]: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01)
        Subsystem: AzureWave AW-NB037H 802.11bgn Wireless Half-size Mini PCIe Card [AR9002WB-1NGCD] [1a3b:2c37]
        Flags: bus master, fast devsel, latency 0, IRQ 17
        Memory at dea00000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [40] Power Management version 3
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
        Capabilities: [60] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Virtual Channel
        Capabilities: [160] Device Serial Number 00-15-17-ff-ff-24-14-12
        Capabilities: [170] Power Budgeting <?>
        Kernel driver in use: ath9k