Hi,
I have been having problems with my Dell Studio 15 freezing
intermittently when on battery for months. I have read many, many posts
on this topic and tried many different tweaks to no avail. Reverting to
an earlier version of pm_utils worked, but I lost the ability to put my
laptop on standby, so that was no good. I decided it was time for me to
do some analysis and try a few tweaks of my own. Well, it looks like I
have come up with a successful work around that should work for any type
of wireless card.
I run Mint 10 and have the latest version of pm-utils installed - 1.4.1.
tailing /var/log/pm-powersave.log reveals that /usr/lib/pm-
utils/power.d/wireless is called to put the wireless card into powersave
mode when the power cord is removed. I found the specific section of
code that makes that change is at the end of the script:
case $1 in
true) wireless_powersave on;;
false) wireless_powersave off ;;
*) exit $NA ;;
esac
I simply changed it to:
case $1 in
true) wireless_powersave off;;
false) wireless_powersave off ;;
*) exit $NA ;;
esac
This results in the card never being put into powersave mode and has
stopped the freezing. This change does not appear to affect the power
consumption either. So, all is well and I have said goodbye a very
frustrating problem. I hope it works for you too.
FYI, my wireless card is a Broadcom Corporation BCM4312 802.11b/g LP-PHY
(rev 01)
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https://bugs.launchpad.net/bugs/656745
Title:
notebook crashes on battery with particular wlan or other pcie devices
enabled (dell vostro 3700, asus, medion, acer and others)
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