Comment 38 for bug 1303736

For me at least this completely fixes the issues around suspending

It seems they included broken / buggy packages in the main build,
completely disabling this "lightlocker" crap seems to have a tremendous
benefit in mitigating the issue.

I am unsure of how this affects my laptop's suspend or sleep modes but it
means I can use the thing after going from A->B, I would recommend backing
up everything you work on using Ubuntu 14.04 anyway as I have noticed
several other bugs, however as I feel this has been a drawn out bug request
which I have had to fix myself I dont see any point using ubuntu any more
and will switch distros until it becomes more stable​

On 26 April 2014 09:07, Rory Yorke <email address hidden> wrote:

> Confirmed on Xubuntu 14.04 on Dell Inspiron 3521, which has a dual GPU
> (Intel/AMD). Removing light-locker and installing xscreensaver (I
> already had it installed -- probably had it since 13.04?) is a
> successful workaround.
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1307918).
> https://bugs.launchpad.net/bugs/1303736
>
> Title:
> Black screen after login from suspend in Xubuntu 14.04
>
> Status in Xfce4 Power Manager:
> New
> Status in “xfce4-power-manager” package in Ubuntu:
> Confirmed
>
> Bug description:
> Problem description
> ---
>
> Expected behaviour:
> After putting the computer to sleep (suspend), the display manager
> (LightDM) appears, I log in and the session resumes.
>
> Behaviour:
> After logging back into the session the screen remains black. The system
> is awake and I can get back to the display
> manager, but I cannot continue work due to a black display screen.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 14.04
> Package: linux-image-3.13.0-23-generic 3.13.0-23.45
> ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
> Uname: Linux 3.13.0-23-generic x86_64
> NonfreeKernelModules: nvidia
> ApportVersion: 2.14.1-0ubuntu1
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: minium 2210 F.... pulseaudio
> CurrentDesktop: XFCE
> Date: Mon Apr 7 13:00:11 2014
> HibernationDevice: RESUME=UUID=d5c0f9e8-e1a0-4ca1-a684-4879c98be5d5
> InstallationDate: Installed on 2014-04-02 (4 days ago)
> InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Daily amd64
> (20140402)
> MachineType: LENOVO 4242PT2
> ProcFB: 0 inteldrmfb
> ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-23-generic.efi.signed
> root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
> RelatedPackageVersions:
> linux-restricted-modules-3.13.0-23-generic N/A
> linux-backports-modules-3.13.0-23-generic N/A
> linux-firmware 1.127
> RfKill:
> 0: phy0: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> SourcePackage: linux
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 07/26/2013
> dmi.bios.vendor: LENOVO
> dmi.bios.version: 8AET64WW (1.44 )
> dmi.board.asset.tag: Not Available
> dmi.board.name: 4242PT2
> dmi.board.vendor: LENOVO
> dmi.board.version: Not Available
> dmi.chassis.asset.tag: No Asset Information
> dmi.chassis.type: 10
> dmi.chassis.vendor: LENOVO
> dmi.chassis.version: Not Available
> dmi.modalias:
> dmi:bvnLENOVO:bvr8AET64WW(1.44):bd07/26/2013:svnLENOVO:pn4242PT2:pvrThinkPadT520:rvnLENOVO:rn4242PT2:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
> dmi.product.name: 4242PT2
> dmi.product.version: ThinkPad T520
> dmi.sys.vendor: LENOVO
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/xfce4-power-manager/+bug/1303736/+subscriptions
>

--
Lewis Cowles
Owner, Entrepenuer and Digital Innovations Architect, CODESIGN2