** Tags added: bios-outdated-a12 ** Description changed:
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 + 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 + 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 + 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 + 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. ** Description changed: 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. ** Attachment removed: "ProcEnviron.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1460551/+attachment/4407880/+files/ProcEnviron.txt ** Attachment removed: "Dependencies.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1460551/+attachment/4407879/+files/Dependencies.txt ** Description changed: 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 - 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. ** Tags added: kernel-fixed-upstream-4.1-rc6 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 --- 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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