View Full Version : [ubuntu] 11.10 laptop doesn't recognize AC Cable

October 18th, 2011, 11:34 AM
I just upgraded to 11.10 from 11.04 on my laptop (I don't have Windows) by downloading from the Ubuntu website. The laptop battery is in bad condition, but I was using it with the 11.04 plugged to AC all the time, and everything was fine.
After installing 11.10, the laptop seems to not notice that it is connected to AC, so it shuts down a few minutes after starting. I edited the _LINUX_DEFAULT line of the /etc/default/grub, so now it ends with "quiet splash pcie_aspm=force", but the laptop still shuts down after 5 minutes, it is like it doesn't notice that it is connected to the wall outlet. Seems like there is a setting telling it to run from the battery only. I would appreciate some help, but I am not a computer engineer, so please write the instructions in plain English.