Public bug reported: I'm using a Samsung NP350E5C laptop and I've been having strange issues. I gave up on Xubuntu 13.10 and went back to Xubuntu 13.04 until Xubuntu 14.04 LTS came out. I'd hoped that the strange issues had been resolved but since doing a clean install I have been dogged by weird issues.
Here's what is causing me grief at the moment. I leave my laptop on 24/7 and just close the lid when I am away from the machine. I go into the system's power settings to disable suspend and hibernation so that closing the lid does does nothing. With the kernel that 14.04 shipped with it was as though those settings were completely ignored. I'd close the lid and when I opened it again, there was a blank screen and I was unable to do anything at all, not even start an alternative log in. The only option was to hold the power button until the machine ungracefully turned off. I then applied some hacks I found on line to permanently disable hibernation and suspend. I've also installed all the newer kernels as they have been offered in synaptic. The problem changed to being **intermittent** - my system would randomly hang when I opened the lid. With the latest two kernels (including the 27 one that just came out) it is now happening **more often**! I'll wake up in the morning, open my laptop and there's the blank screen with no way to wake the system up. I wonder if there is something strange with Samsung laptops and the kernels at the moment. I have to add the acpi_vendor backlight tweak to get the brightness working correctly. And for the first kernel releases under 14.04 my usb wireless mouse would not be recognised after a reboot -- I'd have to unplug the transmitter then plug it in again. I'm still experiencing random system slow downs where my machine slows to a crawl. Trying to move the mouse across the screen would take 5 mins in little jumps and starts, with no mouse clicks being registered. Looking on the forums (http://ubuntuforums.org/showthread.php?t=2224455) I see I am not alone and it has been suggested I try a mainline lowlatency kernel which as of today I will try. I am happy to try any suggestions to help resolve this because this is a good machine and it was frustrating having to give up on ubuntu 13.10 and stay with the older, more dependable versions. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-27-generic 3.13.0-27.50 ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11 Uname: Linux 3.13.0-27-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: slumbergod 2145 F.... pulseaudio CurrentDesktop: XFCE Date: Sun May 18 09:14:41 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2014-04-18 (29 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140414) MachineType: SAMSUNG ELECTRONICS CO., LTD. 350V5C/351V5C/3540VC/3440VC ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic.efi.signed root=UUID=7ef0aef5-c4f9-45fb-b729-95b463a492d6 ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-27-generic N/A linux-backports-modules-3.13.0-27-generic N/A linux-firmware 1.127.2 SourcePackage: linux StagingDrivers: rts5139 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/04/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P09ABE dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: NP350E5C-A02AU dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: BOARD REVISION 00 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:bvnAmericanMegatrendsInc.:bvrP09ABE:bd07/04/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn350V5C/351V5C/3540VC/3440VC:pvrP09ABE.012.CP:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP350E5C-A02AU:rvrBOARDREVISION00:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 350V5C/351V5C/3540VC/3440VC dmi.product.version: P09ABE.012.CP dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug package-from-proposed staging trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1320554 Title: Suspend hang with blank screen on lid open To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1320554/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
