Public bug reported: I have a Dell Latitude E6440 laptop (http://www.ubuntu.com/certification/hardware/201306-13687/), with the switchable AMD graphics option, running Ubuntu 12.04.2 LTS.
I followed the installation instructions provided by Dell: http://www.dell.com/support/drivers/us/en/rc1046313/DriverDetails/Product/latitude-e6440-laptop?driverId=Y24FF&osCode=1204A&fileId=3332894306&languageCode=EN&categoryId=CS And after installation of Ubuntu and the Dell driver package, the laptop is running very well. However, I suffer from a bug preventing my laptop to suspend. On suspend, the screen just turns black but the laptop is still powered on. None of the key combinations I tried was able to restore the display, forcing me to do a hard shut down. Suspend sometimes does work but is very rare. I could not identify a pattern. One time where suspend worked consecutively, I got a kernel panic, which I took a screenshot of using my phone. I have also tried performing suspend on Ubuntu 12.04.3 using both Live CD and a clean install, but same thing happens. I also have an install of Debian Unstable, same symptoms with suspend on kernel version 3.12 and 3.13. Please let me know what type of information I can provide to help fix this bug. Please be verbose, as my kernel debugging skills are non- existent. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.5.0-45-generic 3.5.0-45.68~precise1 ProcVersionSignature: Ubuntu 3.5.0-45.68~precise1-generic 3.5.7.26 Uname: Linux 3.5.0-45-generic x86_64 NonfreeKernelModules: fglrx AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25. ApportVersion: 2.0.1-0ubuntu17.6 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 1: PCH [HDA Intel PCH], device 0: ALC292 Analog [ALC292 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ghislain 2150 F.... pulseaudio /dev/snd/controlC0: ghislain 2150 F.... pulseaudio CRDA: country GB: (2402 - 2482 @ 40), (N/A, 20) (5170 - 5250 @ 40), (N/A, 20) (5250 - 5330 @ 40), (N/A, 20), DFS (5490 - 5710 @ 40), (N/A, 27), DFS Card0.Amixer.info: Card hw:0 'MID'/'HDA Intel MID at 0xf7d34000 irq 48' Mixer name : 'Intel Haswell HDMI' Components : 'HDA:80862807,80860101,00100000' Controls : 18 Simple ctrls : 3 Card1.Amixer.info: Card hw:1 'PCH'/'HDA Intel PCH at 0xf7d30000 irq 49' Mixer name : 'Realtek ALC292' Components : 'HDA:10ec0292,102805bd,00100001' Controls : 26 Simple ctrls : 13 Date: Sun Jan 26 15:33:45 2014 HibernationDevice: RESUME=UUID=5d5af1b2-317b-4693-bbd4-10bc99f45293 InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130822-08:48 IwConfig: eth0 no wireless extensions. lo no wireless extensions. wlan0 no wireless extensions. MachineType: Dell Inc. Latitude E6440 MarkForUpload: True ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-45-generic root=UUID=3072672b-2ef4-4c89-9273-0b5071b7d1ad ro quiet splash pcie_aspm=force vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.5.0-45-generic N/A linux-backports-modules-3.5.0-45-generic N/A linux-firmware 1.79.9 SourcePackage: linux-lts-quantal StagingDrivers: zram UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/03/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A02 dmi.board.name: 0K9GNV dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA02:bd09/03/2013:svnDellInc.:pnLatitudeE6440:pvr01:rvnDellInc.:rn0K9GNV:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. ** Affects: linux-lts-quantal (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug precise qa-kernel-lts-testing running-unity staging suspend ** Attachment added: "kernel panic on suspend" https://bugs.launchpad.net/bugs/1272933/+attachment/3957678/+files/IMG_20140126_135223.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1272933 Title: [Dell Latitude E6440] suspend leads to black screen, laptop does not enter sleep. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-quantal/+bug/1272933/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
