Confirming this still affects 12.04 with the same laptop.
I didn't have my old hack script handy, so I put a new one in
/etc/pm/sleep.d with a resume case, that did:
(in bash): for a in {1..10}; do iwlist scan > /dev/null; sleep 1; done
Yeah, this lame hack seems to work perfectly.
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https://bugs.launchpad.net/bugs/665944
Title:
System takes too long to activate wifi on resume
Status in “network-manager” package in Ubuntu:
Confirmed
Bug description:
Binary package hint: network-manager
Using Maverick on a Dell Mini 10v, Ubuntu takes much, much longer to
activate wifi when resuming from sleep.
With Lucid, after opening the lid, NM would start searching for wifi
after a few seconds -- perhaps 2-3. It would quickly reconnect and
the laptop would be usable.
With Maverick, the system wakes up slightly slower (but not enough to
matter). However, the wifi takes dramatically longer to reactivate --
about 30 seconds.
During this time, the red network disabled icon is displayed. Once
the icon switches to the pulsing wifi-connecting logo, the connection
is re-enabled quickly.
It's acting like NM didn't notice the system just woke up for 30
seconds, basically.
This is very annoying on a laptop -- wifi connection performance is
important, and worked well in Lucid.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: network-manager 0.8.1+git.20100810t184654.ab580f4-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
NonfreeKernelModules: wl
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
Date: Sun Oct 24 09:07:36 2010
IfupdownConfig:
auto lo
iface lo inet loopback
IpRoute:
192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.103 metric
2
169.254.0.0/16 dev eth1 scope link metric 1000
default via 192.168.1.1 dev eth1 proto static
Keyfiles: Error: [Errno 2] No such file or directory
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: network-manager
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