Screen goes blank after resume from suspend

[Greg Taylor]

After upgrading to Xubuntu 14.04, whenever I close the lid to my laptop to suspend it and then reopen it, the computer appears to resume properly (power light, hard drive light, wireless light are all lit), but the screen turns on for a second then turns off. There is nothing I can do but hit the power button to power off the machine. Upon powering back up everything is normal.

Attempts to go to the console by hitting CTRL-ALT-F1 do nothing. The screen stays off.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ghtaylor 2076 F.... pulseaudio
CurrentDesktop: XFCE
Date: Sun Jun 22 17:56:03 2014
HibernationDevice: RESUME=UUID=e50aa822-dc05-4c87-82de-6109d02dff80
InstallationDate: Installed on 2013-06-08 (379 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
MachineType: ASUSTeK COMPUTER INC. X201EP
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-29-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-29-generic N/A
 linux-backports-modules-3.13.0-29-generic N/A
 linux-firmware 1.127.2
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-06-02 (20 days ago)
dmi.bios.date: 02/04/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X201EP.209
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X201EP
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX201EP.209:bd02/04/2013:svnASUSTeKCOMPUTERINC.:pnX201EP:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX201EP:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: X201EP
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.16 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.16-rc1-utopic/

[Greg Taylor (gtaylor-sonic)]

With the lateset upstream kernel, 3.16.0, the bug still exists but the behavior is different. Upon resume, the login screen appears and does allow me to login, but then the screen goes blank after successfully logging in. At that point I am able to CTRL-ALT-F1 to get a console and kill my xvfe session to start a new one.

[Greg Taylor (gtaylor-sonic)]

I should add that when the screen goes "blank" not only is it dark but the LCD backlight appears to be turned off.