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 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
