Public bug reported:

CID : 201411-16196 Lenovo Carbon_X1_3rd with 14.04.2 (utopic)

Steps:
1. Install 14.04.2 on machine.
2. Log in system.
3. Close / open lid and verify the result.

Expect result:
System resume back smoothly.

Actual result:
System resumed back, but screen is black always, only curse displayed.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-30-generic 3.16.0-30.40~14.04.1 [modified: 
boot/vmlinuz-3.16.0-30-generic]
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Fri May  8 03:09:41 2015
InstallationDate: Installed on 2015-05-06 (2 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)
--- 
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  u          1562 F.... pulseaudio
 /dev/snd/controlC0:  u          1562 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=021bf977-8bd8-4c87-9037-14f998e520d4
InstallationDate: Installed on 2015-05-06 (2 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
MachineType: LENOVO 20BTZ09ZUS
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic 
root=UUID=9b2a372c-00ee-4254-8df7-17f4348b2177 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-30-generic N/A
 linux-backports-modules-3.16.0-30-generic  N/A
 linux-firmware                             1.127.11
Tags:  trusty
Uname: Linux 3.16.0-30-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
WifiSyslog:
 May  8 03:18:49 201411-16196 wpa_supplicant[808]: message repeated 119 times: 
[ wlan0: CTRL-EVENT-SCAN-STARTED ]
 May  8 03:18:52 201411-16196 wpa_supplicant[808]: nl80211: 
send_and_recv->nl_recvmsgs failed: -33
 May  8 03:19:52 201411-16196 wpa_supplicant[808]: wlan0: 
CTRL-EVENT-SCAN-STARTED
_MarkForUpload: True
dmi.bios.date: 10/27/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: N14ET24W (1.02 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BTZ09ZUS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: 
dmi:bvnLENOVO:bvrN14ET24W(1.02):bd10/27/2014:svnLENOVO:pn20BTZ09ZUS:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BTZ09ZUS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BTZ09ZUS
dmi.product.version: ThinkPad X1 Carbon 3rd
dmi.sys.vendor: LENOVO

** Affects: linux-lts-utopic (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: 201411-16196 amd64 apport-bug apport-collected beijing-lab 
blocker-hwcert trusty

** Tags added: apport-collected

** Description changed:

  CID : 201411-16196 Lenovo Carbon_X1_3rd with 14.04.2 (utopic)
  
  Steps:
  1. Install 14.04.2 on machine.
  2. Log in system.
  3. Close / open lid and verify the result.
  
  Expect result:
  System resume back smoothly.
  
  Actual result:
  System resumed back, but screen is black always, only curse displayed.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-30-generic 3.16.0-30.40~14.04.1 [modified: 
boot/vmlinuz-3.16.0-30-generic]
  ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
  Uname: Linux 3.16.0-30-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri May  8 03:09:41 2015
  InstallationDate: Installed on 2015-05-06 (2 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 
(20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)
+ --- 
+ ApportVersion: 2.14.1-0ubuntu3.7
+ Architecture: amd64
+ AudioDevicesInUse:
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  u          1562 F.... pulseaudio
+  /dev/snd/controlC0:  u          1562 F.... pulseaudio
+ CurrentDesktop: Unity
+ DistroRelease: Ubuntu 14.04
+ HibernationDevice: RESUME=UUID=021bf977-8bd8-4c87-9037-14f998e520d4
+ InstallationDate: Installed on 2015-05-06 (2 days ago)
+ InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 
(20150218.1)
+ MachineType: LENOVO 20BTZ09ZUS
+ Package: linux (not installed)
+ ProcFB: 0 inteldrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic 
root=UUID=9b2a372c-00ee-4254-8df7-17f4348b2177 ro quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
+ RelatedPackageVersions:
+  linux-restricted-modules-3.16.0-30-generic N/A
+  linux-backports-modules-3.16.0-30-generic  N/A
+  linux-firmware                             1.127.11
+ Tags:  trusty
+ Uname: Linux 3.16.0-30-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
+ WifiSyslog:
+  May  8 03:18:49 201411-16196 wpa_supplicant[808]: message repeated 119 
times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
+  May  8 03:18:52 201411-16196 wpa_supplicant[808]: nl80211: 
send_and_recv->nl_recvmsgs failed: -33
+  May  8 03:19:52 201411-16196 wpa_supplicant[808]: wlan0: 
CTRL-EVENT-SCAN-STARTED
+ _MarkForUpload: True
+ dmi.bios.date: 10/27/2014
+ dmi.bios.vendor: LENOVO
+ dmi.bios.version: N14ET24W (1.02 )
+ dmi.board.asset.tag: Not Available
+ dmi.board.name: 20BTZ09ZUS
+ dmi.board.vendor: LENOVO
+ dmi.board.version: SDK0E50510 WIN
+ dmi.chassis.asset.tag: No Asset Information
+ dmi.chassis.type: 10
+ dmi.chassis.vendor: LENOVO
+ dmi.chassis.version: None
+ dmi.modalias: 
dmi:bvnLENOVO:bvrN14ET24W(1.02):bd10/27/2014:svnLENOVO:pn20BTZ09ZUS:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BTZ09ZUS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
+ dmi.product.name: 20BTZ09ZUS
+ dmi.product.version: ThinkPad X1 Carbon 3rd
+ dmi.sys.vendor: LENOVO

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https://bugs.launchpad.net/bugs/1453010

Title:
  [Lenovo Carbon_X1_3rd] For 14.04.2, close / open lid, system resumed
  back, but screen is black always, only curse displayed.

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