Comment 37 for bug 274405

I had no luck with WICD.

This workaround is a little messy, but it seems to work better than nothing.

sudo nano -B /usr/lib/pm-utils/sleep.d/45iwlist

Then edit it so that the command "iwlist scan" is part of the process:

#!/bin/sh
# Kludge to force a rescan of available wireless networks on resume, so that
# stale ESSIDs aren't shown as current.
# To be removed when bug #336055 is resolved in the kernel.

. "${PM_FUNCTIONS}"

which iwlist || exit $NA

rescan_wireless()
{
 for iface in /sys/class/net/*; do
  [ -d "$iface/wireless" ] || continue
  iface="${iface##*/}"
  iwlist "$iface" scanning
 done
}

case "$1" in
 thaw|resume)
  rescan_wireless
  iwlist scan
  ;;
 *) exit $NA
  ;;
esac

Then Control-X, Y, Enter to save.

I'm on an HP 1120nr