@Mateo I think your laptop overheats and shuts down (for safety reasons), I don't think it has something to do with the PCIE active state power management, thanks to Colin's sollution your laptop started to work on battery but fails for other reason.
If it shuts down during heavy load, that suggests the dusty heatsink or lack of good thermal contact between CPU/GPU/chipset and heatsink. When I worked in Dell factory, sometimes we got faulty heatsinks from the supplier and all the computers failed during the build test. The laptop should never turn off itself during the heavy load, only when the cooling areas are blocked, i.e. you forget it under the duvet. Otherwise it's the good reason for asking for replacement. If your laptop gets hot during idle, you check the CPU power management, i.e. you put the "CPU Frequency Scaling Monitor" applet on the top tray and check what frequency your CPU runs on. This applet also allows you to set the CPU power management, I suggest the "ondemand" mode. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. 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) -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
