I also have a Samsung NP-A530U3C-A01UK laptop that exhibits the same behaviour. Since applying the fix from juanmanul all is now well.
Many thanks juanmanual for identifying the cause for this long running issue and for working diligently to find the fix. -- 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/1283589 Title: [Samsung NP530U3C-A01] LID close, AC, and battery status events not produced anymore Status in “linux” package in Ubuntu: Confirmed Bug description: On my Samsung Series 5 NP530U3C-A01 the LID close, AC, and battery status events not produced anymore. The situation is the same (tested with trusty-desktop-amd64.iso 2014-02-22). I created a blog post where I can put all the information related to this bug here: http://zenstep.com.ar/samsung-linux/ In summary, after a suspend sleep with many events (8 plug/unplug, or battery dropping or increasing about 16%, maybe less), the Embedded Controller accumulates those events and stops producing GPE 0x17. Neither Windows nor Linux query those accumulated events, because the EC doesn't produce GPE 0x17 anymore. The issue persists between restarts and shutdowns, and even after re-suspending/re-resuming. Hitting the reset button through the hole in the back fixes the problem temporarily. That is, until the next unlucky suspend. IMPORTANT: if the laptop is never ever suspended, the issue never comes back. To force the issue to happen, you can either: 1) Sleep the computer in linux (by closing the lid or any other means). 2) Unplug from the wall, plug, unplug, plug, unplug, plug, unplug, plug (8 actions or more). 3) Resume from sleep. You'll note that the battery icon is fixed, and unplugging or plugging doesn't update battery status anymore. Also note that the ability to suspend by closing the LID is lost. OR: 1) echo disable > /sys/firmware/acpi/interrupts/gpe17 2) plug, unplug, plug, unplug, plug, unplug, plug, unplug (8 actions) 3) echo enable > /sys/firmware/acpi/interrupts/gpe17 WORKAROUND: Turn off the computer, unplug it, hit the reset button in the back of the laptop, and then plug it again. WORKAROUND (kernel patch 1): https://bugzilla.kernel.org/show_bug.cgi?id=44161#c133 BETTER WORKAROUND (kernel patch 2): https://bugzilla.kernel.org/show_bug.cgi?id=44161#c149 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-11-generic 3.13.0-11.31 ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3 Uname: Linux 3.13.0-11-generic x86_64 ApportVersion: 2.13.2-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2546 F.... pulseaudio CasperVersion: 1.337 Date: Sat Feb 22 22:57:34 2014 LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140222) MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: initrd=/casper/initrd.lz file=/cdrom/preseed/hostname.seed boot=casper quiet splash -- BOOT_IMAGE=/casper/vmlinuz.efi PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.13.0-11-generic N/A linux-backports-modules-3.13.0-11-generic N/A linux-firmware 1.125 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/15/2013 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: P14AAJ dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: SAMSUNG_NP1234567890 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: FAB1 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 530U3C/530U4C dmi.product.version: 0.1 dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1283589/+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
