I further investigated on this bug and can confirm there is a bug.
Connecting to a hidden network with the network manager doesn't work on
my feisty installation with kernel 2.6.20-16.
As already stated the wireless extensions of the kernel and Wireless
Tools don't match.
[EMAIL PROTECTED]:~$ iwconfig --version
iwconfig Wireless-Tools version 28
Compatible with Wireless Extension v11 to v20.
Kernel Currently compiled with Wireless Extension v21.
ath0 Recommend Wireless Extension v13 or later,
Currently compiled with Wireless Extension v21.
I tried to resolve the problem by installing unstable wireless tools
v29-pre22 on my box. This didn't solve the problem, even if with the
upper command wireless extensions of kernel and supported wireless
version of wireless tools now match.
This is explainable (same on patched system/unpatched system):
[EMAIL PROTECTED]:~$ ldd /usr/sbin/NetworkManager
linux-gate.so.1 => (0xffffe000)
...
libiw.so.28 => /lib/libiw.so.28 (0xb7ee9000)
...
/lib/ld-linux.so.2 (0xb7f12000)
The NetworkManager is directly linked against libiw from Wireless Tools
(for ubuntu this is an extra package libiw28, the source is distributed
with wireless tools) and apparently doesn't use the command line tools
like iwconfig, but the library interface. It is possible the that code
responsible for translating between different versions of Wireless
Extension is part of Wireless tools (like iwlist, iwconfig) and not part
of the library and that Network Manager is missing the right
translations between the versions.
The unstable wireless tools (not yet released) bring libiw.so.29 with
them. I didn't try to replace libiw.so.28 by libiw.so.29.
Conclusion: libiw28 doesn't match the kernel 2.6.20-15/16 on feisty.
Connecting with wpa_supplicant and simple WPA-PSK from commandline works
without problem, also connecting with broadcasted ESSID and
NetworkManager.
It would be nice if Witold Krakowski could comment on how to recompile
the kernel with older wireless extension.
--
can't connect to hidden network
https://bugs.launchpad.net/bugs/50214
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