I have still the problem with my Dell Latitude E6440 (but no AMD/Nvidia card, just the Intel integrated GPU). I have installed the latest BIOS version (A11). I also have troubles with the wake-up from suspend on this laptop with Windows 7 64bit and with Fedora 21 64bits. All 3 systems are running the latest version of their respective software packages. And I have enabled the hardware enablement stack on Ubuntu 14.04 LTS. But still no luck.
Behaviour: it often wakes up but then either "input" error are reported on the console and the integrated keyboard is not usable, or it seems to wake up but then shortly after they are display artefacts (label of application disappearing, etc.) and then nothing works (apart from moving the mouse and switching virtual consoles) it is not possible to perform a clean shutdown in these cases (when I happen to manage to open a text console, I usually do not see particular errors, but last time there was all over ATA errors being displayed, though that was on Fedora and not Ubuntu that time). I can't attach any log or dump, etc. as the last message in the log before the reboot is something like "Suspend succeeded". So nothing is log, traced, etc. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-lts-trusty in Ubuntu. https://bugs.launchpad.net/bugs/1272933 Title: [Dell Latitude E6440] suspend leads to black screen, laptop does not enter sleep. Status in linux-lts-quantal package in Ubuntu: Expired Status in linux-lts-trusty package in Ubuntu: New Bug description: 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. 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