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[Bug 1460551] Re: Random screen locking

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Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.1 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/v4.1-rc6-unstable/

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https://bugs.launchpad.net/bugs/1460551

Title:
  Random screen locking

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Random screen locking happens about once an hour. Mouse is not
  responding, keyboard is, but GUI does not respond. To overcome the
  problem I have to switch to terminal with ctrl+alt+1 and go back. In
  dmesg I can see:

  [   68.509976] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510021] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510044] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510064] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510083] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510102] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510134] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510154] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.510644] ACPI Warning: \_SB_.PCI0.RP05.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
  [   68.615945] vgaarb: this pci device is not a vga device

  $ dmesg | grep vgaarb
  [    0.524324] vgaarb: setting as boot device: PCI:0000:00:02.0
  [    0.524325] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
  [    0.524328] vgaarb: loaded
  [    0.524329] vgaarb: bridge control possible 0000:00:02.0
  [    1.498735] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
  [    5.667900] vgaarb: this pci device is not a vga device
  [    6.409112] vgaarb: this pci device is not a vga device
  [   68.506178] vgaarb: this pci device is not a vga device
  [   68.615945] vgaarb: this pci device is not a vga device

  $ lspci
  00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
  00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
  00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
  00:14.0 USB controller: Intel Corporation Lynx Point-LP USB xHCI HC (rev 04)
  00:16.0 Communication controller: Intel Corporation Lynx Point-LP HECI #0 (rev 04)
  00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I218-LM (rev 04)
  00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio Controller (rev 04)
  00:1c.0 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 1 (rev e4)
  00:1c.3 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 4 (rev e4)
  00:1c.4 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 5 (rev e4)
  00:1c.5 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 6 (rev e4)
  00:1d.0 USB controller: Intel Corporation Lynx Point-LP USB EHCI #1 (rev 04)
  00:1f.0 ISA bridge: Intel Corporation Lynx Point-LP LPC Controller (rev 04)
  00:1f.2 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 04)
  00:1f.3 SMBus: Intel Corporation Lynx Point-LP SMBus Controller (rev 04)
  01:00.0 SD Host controller: O2 Micro, Inc. SD/MMC Card Reader Controller (rev 01)
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)
  03:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] (rev a1)

  Dell Latitude E5540

  SMBIOS 2.7 present.

  Handle 0x0000, DMI type 0, 24 bytes
  BIOS Information
  	Vendor: Dell Inc.
  	Version: A11
  	Release Date: 02/02/2015
  	Address: 0xF0000
  	Runtime Size: 64 kB
  	ROM Size: 14336 kB
  	Characteristics:
  		PCI is supported
  		PNP is supported
  		BIOS is upgradeable
  		BIOS shadowing is allowed
  		Boot from CD is supported
  		Selectable boot is supported
  		EDD is supported
  		5.25"/1.2 MB floppy services are supported (int 13h)
  		3.5"/720 kB floppy services are supported (int 13h)
  		3.5"/2.88 MB floppy services are supported (int 13h)
  		Print screen service is supported (int 5h)
  		8042 keyboard services are supported (int 9h)
  		Serial services are supported (int 14h)
  		Printer services are supported (int 17h)
  		ACPI is supported
  		USB legacy is supported
  		Smart battery is supported
  		BIOS boot specification is supported
  		Function key-initiated network boot is supported
  		Targeted content distribution is supported
  		UEFI is supported
  	BIOS Revision: 4.6

  Handle 0xDEE1, DMI type 13, 22 bytes
  BIOS Language Information
  	Language Description Format: Long
  	Installable Languages: 1
  		en|US|iso8859-1
  	Currently Installed Language: en|US|iso8859-1

  $ lsb_release -rd
  Description:	Ubuntu 14.04.2 LTS
  Release:	14.04

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-38-generic 3.16.0-38.52~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-38.52~14.04.1-generic 3.16.7-ckt10
  Uname: Linux 3.16.0-38-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Jun  1 09:28:38 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-05-28 (4 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: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC1D0p:   tm         2422 F...m pulseaudio
   /dev/snd/controlC0:  tm         2422 F.... pulseaudio
   /dev/snd/controlC1:  tm         2422 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-05-28 (4 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: Dell Inc. Latitude E5540
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-38-generic root=UUID=9a540be9-ff2e-45f9-8fa9-84e7ee420e26 ro quiet splash
  ProcVersionSignature: Ubuntu 3.16.0-38.52~14.04.1-generic 3.16.7-ckt10
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-38-generic N/A
   linux-backports-modules-3.16.0-38-generic  N/A
   linux-firmware                             1.127.12
  Tags:  trusty
  Uname: Linux 3.16.0-38-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 02/02/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A11
  dmi.board.name: 0GW97C
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA11:bd02/02/2015:svnDellInc.:pnLatitudeE5540:pvr01:rvnDellInc.:rn0GW97C:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E5540
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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