How to apply the Linux Kernel 2.6.38+ power issue workaround: Step 1: gksu gedit /etc/default/grub This command will open GRUB2 config file Step 2: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" Locate the line that looks as above. I think that above line is at 11th line in GRUB2 config file. Or look for 13th line. Step 3: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force" Modify the line as shown above. Now double check you've edited the file correctly! Modifying this file incorrectly may cause your computer to stop booting! Step 3: sudo update-grub Update grub by using above command. After finishing update, please restart your computer. WARNING: This is highly risky.... I'm not responsible if anything happens to your system. If something goes wrong, you can revert it back. Open "/etc/default/grub" as root and remove "pcie_aspm=force" from the end of the "GRUB_CMDLINE_LINUX_DEFAULT" line, then run "sudo update-grub".