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[Pirouette Cacahuète <1427942@xxxxxxxxxxxxxxxxxx>]

Upgrading from working 14.10 to current 15.04 reproduces the issue.

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https://bugs.launchpad.net/bugs/1427942

Title:
  15.04 Beta, Toshiba Z835/ThinkPad T420s, suspend on lid close does not
  work.

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Hello friends. I fired up 15.04 beta on my Toshiba Z835 ultrabook.
  Upon lid close, the system does not suspend despite being set to
  suspend on lid close for both battery and on AC power. This worked
  fine under 14.04, however I admittedly never tested 14.10.

  If I select the gear in the upper right corner and hit suspend, it
  suspends and even resumes fine.

  Also worth mentioning is a long standing issue with the Toshiba Z835,
  where following resume from suspend, the function keys which control
  the brightness no longer work. I see the meter go up and down, but it
  doesn't change the actual brightness.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-7-generic 3.19.0-7.7 [modified: boot/vmlinuz-3.19.0-7-generic]
  ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
  Uname: Linux 3.19.0-7-generic x86_64
  ApportVersion: 2.16.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jason      2130 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Mar  3 20:40:39 2015
  InstallationDate: Installed on 2015-03-04 (0 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150303)
  MachineType: TOSHIBA PORTEGE Z835
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-7-generic root=UUID=4bf1f853-b598-4a66-874b-8a41c88f3de1 ro quiet splash vt.handoff=7
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/18/2013
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: Version 1.80
  dmi.board.asset.tag: 0000000000
  dmi.board.name: Portable PC
  dmi.board.vendor: TOSHIBA
  dmi.board.version: Version A0
  dmi.chassis.asset.tag: 0000000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: Version 1.0
  dmi.modalias: dmi:bvnTOSHIBA:bvrVersion1.80:bd04/18/2013:svnTOSHIBA:pnPORTEGEZ835:pvrPT224U-013021:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
  dmi.product.name: PORTEGE Z835
  dmi.product.version: PT224U-013021
  dmi.sys.vendor: TOSHIBA

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