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Finally, a reliable solution for unexpected shutdowns and hangs was discovered! This seems to be working with any Asus laptop suffering from unexpected shutdowns and / or hangs while running on battery: 1. Add the following boot arguments _both_ to GRUB_CMDLINE_LINUX_DEFAULT and GRUB_CMDLINE_LINUX in /etc/default/grub.cfg: intel_pstate=disable pcie_aspm=force acpi_osi=’Windows 2009′ acpi_os_name=’Windows 2009′ Don’t forget to execute sudo update-grub afterwards! 2. Install the package tlp from ppa:linrunner/tlp an set at least the following values in /etc/default/tlp CPU_SCALING_GOVERNOR_ON_BAT=ondemand CPU_BOOST_ON_BAT=0 PCIE_ASPM_ON_BAT=powersave RUNTIME_PM_ON_BAT=on 3. Shut down the device, carefully remove the bottom cover and detach the big battery (not the tiny CMOS battery) from the motherboard for five minutes. There are plenty of youtube videos showing how to safely disassemble the various Asus laptops. With certain power management settings on the OS side, the EC (Embedded Controller) goes crazy and thus needs resetting. The only way to reset it is to detach the battery for a few minutes. 4. From now on, shutdowns should be gone. Take care, however, not to _ever_ use any live USB stick or installation / recovery CDs based on Linux and using the intel_pstate driver and / or the default BIOS settings for ASPM. If you try to, you will merely reproduce the problem once again, and will subsequently have to disassemble your Zenbook once again. There are a few sad cases, like reinstalling Ubuntu itself, where you will _have_ to boot from a live USB utilizing the problematic intel_pstate driver. Only do so when running on AC, and please repeat Stage 3 (no matter how boring) of this manual once you are done. P.S. Intel_pstate and the default ASPM bios settings eventually make the mobo’s Embedded Controller go crazy and persist in this state until the battery is detached from the motherboard. That’s basically how this problem is born. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/989191 Title: Asus Zenbook UX31E powers off on plugin in/out AC adapter Status in Linux: Unknown Status in linux package in Ubuntu: In Progress Bug description: When I have logged in to Unity and plug in or out AC adapter to Asus Zenbook UX31E, computer powers off. Sometimes this needs couple of tries (waiting or not waiting in between) when plugin in or out AC adapter. This problem doesn't occur when I have switched to console or when in LightDM login screen. Problem doesn't happen with MS Windows either. And yes, there's enough power in my battery too, I can boot up and use the computer without AC adapter. syslog prints these lines to stdout in console, when plugin AC adapter first out and then in: [ 869.521396] asus_wmi: Unknown key 57 pressed [ 874.704525] asus_wmi: Unknown key 58 pressed [ 876.993295] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id What you also need: 1) lsb_release -rd Description: Ubuntu 12.04 LTS Release: 12.04 2) I could guess kernel, but it happens _only_ when I have logged in to Unity (or Unity 2D)... 3) I expect that my computer doesn't power off. 4) Computer powers off. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/989191/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
