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[Pirouette Cacahuète <1429489@xxxxxxxxxxxxxxxxxx>]

So, I've received my T450s and put my SSD with 15.04, the exact same
issue gets reproduced.

** Summary changed:

- Suspend not working intermittently when closing lid on ThinkPad T420s
+ Suspend not working intermittently when closing lid on ThinkPad T420s/T450s

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https://bugs.launchpad.net/bugs/1429489

Title:
  Suspend not working intermittently when closing lid on ThinkPad
  T420s/T450s

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Suspend doesn't work when closing the lid on my ThinkPad T420s. There
  is no issue with 14.10 or 14.04. Kernel 4.0 do not help.

  dmesg when closing/opening with kernel "Linux alex-ThinkPad-T420s 3.19.0-7-generic #7-Ubuntu SMP Thu Feb 26 20:19:34 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux":
  [ 94.842668] systemd-logind[1262]: Lid closed.
  [ 102.468204] systemd-logind[1262]: Lid opened.
  [ 102.468661] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
  [ 124.075694] systemd-logind[1262]: Removed session c1.

  The i915 seems to be unrelated: it appears after the lid is opened
  again, and "pci=noacpi" makes it disappear but the bug stays.

  I managed to got it to work, after playing with the e1000e driver as suggested on https://bbs.archlinux.org/viewtopic.php?pid=1414261#p1414261, but with a dubious and inconsistent state:
   - doing nothing, e1000e loaded, it never goes to suspend when I close the lid (tried 5 times)
   - removing e1000e, goes to suspend when I close the lid
   - doing nothing, e1000e removed, it again cannot go to suspend when I close the lid
   - loading e1000e, goes to suspend when I close the lid

  WORKAROUND: Manually suspend.
  ---
  ApportVersion: 2.16.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alex       1914 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 15.04
  InstallationDate: Installed on 2015-03-07 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: LENOVO 4171CTO
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-7-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
  Tags:  vivid
  Uname: Linux 3.19.0-7-generic x86_64
  UpgradeStatus: Upgraded to vivid on 2015-03-07 (0 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 07/18/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8CET58WW (1.38 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4171CTO
  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:bvr8CET58WW(1.38):bd07/18/2013:svnLENOVO:pn4171CTO:pvrThinkPadT420s:rvnLENOVO:rn4171CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4171CTO
  dmi.product.version: ThinkPad T420s
  dmi.sys.vendor: LENOVO

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