I have the same problem with ubuntu 9.10, running kernel 2.6.31-17. In
my case, the wireless adapter is a PCMCIA card, and if I pop it out and
push it back into its slot, the network connection is re-established.
If I use kernel 2.6.31-16, everything's fine and network connection is
automatically restored. Therefore, I'm not convinced it's network-
manager's fault.
Card's details (from lspci -vvv):
02:00.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN
Controller (rev 03)
Subsystem: Linksys Device 4320
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 64
Interrupt: pin A routed to IRQ 5
Region 0: Memory at 24000000 (32-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: b43-pci-bridge
Kernel modules: ssb
uname -a:
Linux wuppie 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC 2009 i686
GNU/Linux
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network manager can't reconnect to wireless network after suspend
https://bugs.launchpad.net/bugs/368814
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