Here is a workaround to solve this issue permanantly:
sudo gedit /usr/lib/pm-utils/power.d/wireless
(make a copy before doing these changes)
do these changes in the scriptsnippet:
case $driver in
ipw2100) iwpriv_ac="set_power 0"
iwpriv_batt="set_power 0"
iwconfig_ac="power on"
iwconfig_batt="power on";;
ipw3945)
iwpriv_ac="set_power 6"
iwpriv_batt="set_power 6";;
iwl*) if [ -f "/sys/class/net/$1/device/power_level" ]; then
iwlevel_ac=0
iwlevel_batt=0
else
iwconfig_ac="power off"
iwconfig_batt="power off"
fi;;
*) iwconfig_ac="power off"
iwconfig_batt="power off";;
esac
--
Regression in wireless performance under Maverick when on battery power
(broadcom)
https://bugs.launchpad.net/bugs/651008
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