Activity log for bug #1727662

Date Who What changed Old value New value Message
2017-10-26 09:15:17 Alexander Kops bug added bug
2017-10-26 09:15:59 Alexander Kops bug added subscriber Christopher M. Penalver
2017-10-26 09:30:11 Ubuntu Kernel Bot linux (Ubuntu): status New Confirmed
2017-10-26 19:24:41 penalvch tags amd64 apport-bug artful wayland-session amd64 apport-bug artful bios-outdated-1.30 regression-release wayland-session
2017-10-26 19:26:36 penalvch description I upgraded from Ubtuntu 17.04 to Ubuntu 17.10 and this bug started appearing (didn't have this with the versions before). When I lock my screen on my Lenovo T450s and the notebook sits in the dock (two external screens attached), one of the three things happen when I come back after some time and try to unlock (so it went to power safe inbetween): * Most of the time the computer was just shut down and I have to start it again * Sometimes the notebook screen flickers weirdly and one of the two other screens show pixel garbage * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking also works. The last thing I find in /var/log/syslog is [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun Note: Ubuntu uses kernel version 4.13.0-16-lowlatency for some reason, but the issue also appears when I boot with the generic version. I reported already here, but was advised to create a new bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1695989/comments/15 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: akops 3337 F.... pulseaudio /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.13.0-16-lowlatency N/A linux-backports-modules-4.13.0-16-lowlatency N/A linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO After upgrading from Ubtuntu 17.04 to Ubuntu 17.10 this bug started appearing. When I lock my screen on my Lenovo T450s and the notebook sits in the dock (two external screens attached), one of the three things happen when I come back after some time and try to unlock (so it went to power save in-between): * Most of the time the computer was just shut down and I have to start it again * Sometimes the notebook screen flickers weirdly and one of the two other screens show pixel garbage * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking also works. The last thing I find in /var/log/syslog is [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun Using or not using the following kernel parameter didn't change anything: i915.enable_rc6=0 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC1: akops 3337 F.... pulseaudio  /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-4.13.0-16-lowlatency N/A  linux-backports-modules-4.13.0-16-lowlatency N/A  linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO
2017-10-26 19:28:56 penalvch linux (Ubuntu): importance Undecided Medium
2017-10-26 19:28:56 penalvch linux (Ubuntu): status Confirmed Incomplete
2017-11-03 12:13:55 Alexander Kops bug watch added https://bugzilla.redhat.com/show_bug.cgi?id=1506339
2017-11-03 16:15:59 Alexander Kops attachment added lockscreen.png https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5003087/+files/lockscreen.png
2017-11-03 16:24:44 Alexander Kops attachment added energy-settings.png https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5003088/+files/energy-settings.png
2017-11-03 16:27:04 Alexander Kops attachment added screen-lock-settings.png https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5003089/+files/screen-lock-settings.png
2017-11-03 16:38:18 penalvch tags amd64 apport-bug artful bios-outdated-1.30 regression-release wayland-session amd64 apport-bug artful latest-bios-1.30 regression-release wayland-session
2017-11-06 16:40:32 Alexander Kops attachment added syslog https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5004795/+files/syslog
2017-11-06 16:41:25 Alexander Kops attachment added kern.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5004796/+files/kern.log
2017-11-06 17:08:47 penalvch bug added subscriber Kai-Heng Feng
2017-11-07 15:43:55 Alexander Kops attachment added kern.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5005423/+files/kern.log
2017-11-07 15:44:26 Alexander Kops attachment added syslog https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5005424/+files/syslog
2017-11-07 16:06:46 penalvch tags amd64 apport-bug artful latest-bios-1.30 regression-release wayland-session amd64 apport-bug artful kernel-bug-exists-upstream kernel-bug-exists-upstream-4.14-rc8 latest-bios-1.30 regression-release wayland-session
2017-11-07 16:20:28 penalvch linux (Ubuntu): status Incomplete Triaged
2017-11-07 16:39:57 penalvch description After upgrading from Ubtuntu 17.04 to Ubuntu 17.10 this bug started appearing. When I lock my screen on my Lenovo T450s and the notebook sits in the dock (two external screens attached), one of the three things happen when I come back after some time and try to unlock (so it went to power save in-between): * Most of the time the computer was just shut down and I have to start it again * Sometimes the notebook screen flickers weirdly and one of the two other screens show pixel garbage * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking also works. The last thing I find in /var/log/syslog is [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun Using or not using the following kernel parameter didn't change anything: i915.enable_rc6=0 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC1: akops 3337 F.... pulseaudio  /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-4.13.0-16-lowlatency N/A  linux-backports-modules-4.13.0-16-lowlatency N/A  linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO What happens is after I dock my laptop, lock it via clicking the lock icon, and wait ~30 minutes, one of the following three things happen ~50% of the time when I come back to unlock it: * Most of the time the computer is found shut down. * Sometimes the notebook screen flickers weirdly and one of the two external monitors show pixelation. * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking works. I have two external monitors attached to the docking station. When I dock my laptop, the battery indicator does recognize its charging. I've not seen this issue when: 1) With the laptop in the dock, while actively using the laptop. 2) With the laptop out of the dock and no external monitors present. This bug started after upgrading from Ubtuntu 17.04 to Ubuntu 17.10. Using or not using the following kernel parameter didn't change anything: i915.enable_rc6=0 PC temperatures are normal as per lm-sensors. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC1: akops 3337 F.... pulseaudio  /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-4.13.0-16-lowlatency N/A  linux-backports-modules-4.13.0-16-lowlatency N/A  linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO
2017-11-07 16:46:15 penalvch summary Crashes after unlock: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [Lenovo ThinkPad T450s] Issues after docking and locking: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
2017-11-07 19:03:14 penalvch description What happens is after I dock my laptop, lock it via clicking the lock icon, and wait ~30 minutes, one of the following three things happen ~50% of the time when I come back to unlock it: * Most of the time the computer is found shut down. * Sometimes the notebook screen flickers weirdly and one of the two external monitors show pixelation. * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking works. I have two external monitors attached to the docking station. When I dock my laptop, the battery indicator does recognize its charging. I've not seen this issue when: 1) With the laptop in the dock, while actively using the laptop. 2) With the laptop out of the dock and no external monitors present. This bug started after upgrading from Ubtuntu 17.04 to Ubuntu 17.10. Using or not using the following kernel parameter didn't change anything: i915.enable_rc6=0 PC temperatures are normal as per lm-sensors. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC1: akops 3337 F.... pulseaudio  /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-4.13.0-16-lowlatency N/A  linux-backports-modules-4.13.0-16-lowlatency N/A  linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO What happens is after I dock my laptop into a Lenovo ThinkPad Ultra Dock Type 40A2 20V, lock it via clicking the lock icon, and wait ~30 minutes, one of the following three things happen ~50% of the time when I come back to unlock it: * Most of the time the computer is found shut down. * Sometimes the notebook screen flickers weirdly and one of the two external monitors show pixelation. * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking works. I have two external monitors attached to the docking station. When I dock my laptop, the battery indicator does recognize its charging. I've not seen this issue when: 1) With the laptop in the dock, while actively using the laptop. 2) With the laptop out of the dock and no external monitors present. This bug started after upgrading from Ubtuntu 17.04 to Ubuntu 17.10. Using or not using the following kernel parameter didn't change anything: i915.enable_rc6=0 PC temperatures are normal as per lm-sensors. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC1: akops 3337 F.... pulseaudio  /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-4.13.0-16-lowlatency N/A  linux-backports-modules-4.13.0-16-lowlatency N/A  linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO
2017-11-09 11:56:38 Alexander Kops bug watch added https://bugs.freedesktop.org/show_bug.cgi?id=103643
2017-11-10 15:15:30 Kai-Heng Feng bug task added linux
2017-11-10 16:32:09 Bug Watch Updater linux: status Unknown Incomplete
2017-11-10 16:32:09 Bug Watch Updater linux: importance Unknown High
2017-11-10 18:39:28 penalvch description What happens is after I dock my laptop into a Lenovo ThinkPad Ultra Dock Type 40A2 20V, lock it via clicking the lock icon, and wait ~30 minutes, one of the following three things happen ~50% of the time when I come back to unlock it: * Most of the time the computer is found shut down. * Sometimes the notebook screen flickers weirdly and one of the two external monitors show pixelation. * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking works. I have two external monitors attached to the docking station. When I dock my laptop, the battery indicator does recognize its charging. I've not seen this issue when: 1) With the laptop in the dock, while actively using the laptop. 2) With the laptop out of the dock and no external monitors present. This bug started after upgrading from Ubtuntu 17.04 to Ubuntu 17.10. Using or not using the following kernel parameter didn't change anything: i915.enable_rc6=0 PC temperatures are normal as per lm-sensors. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC1: akops 3337 F.... pulseaudio  /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-4.13.0-16-lowlatency N/A  linux-backports-modules-4.13.0-16-lowlatency N/A  linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO What happens is after I dock my laptop into a Lenovo ThinkPad Ultra Dock Type 40A2 20V, lock it via clicking the lock icon, and wait ~30 minutes, one of the following three things happen ~50% of the time when I come back to unlock it: * Most of the time the computer is found shut down. * Sometimes the notebook screen flickers weirdly and one of the two external monitors show pixelation. * The notebook screen shows the lock screen but is completely frozen. Occasionally unlocking works. I have two external monitors attached to the docking station. When I dock my laptop, the battery indicator does recognize its charging. I've not seen this issue when: 1) With the laptop in the dock, while actively using the laptop. 2) With the laptop out of the dock and no external monitors present. This bug started after upgrading from Ubtuntu 17.04 to Ubuntu 17.10. Using or not using the following kernel parameter didn't change anything: i915.enable_rc6=0 Updated docking station firmware to latest 2.33.00. PC temperatures are normal as per lm-sensors. 20171109 - Not reproducible testing drm-tip for 1.5 days. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC1: akops 3337 F.... pulseaudio  /dev/snd/controlC0: akops 3337 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Oct 26 10:44:11 2017 HibernationDevice: RESUME=/dev/mapper/system-swap_1 MachineType: LENOVO 20BWS2YL00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-4.13.0-16-lowlatency N/A  linux-backports-modules-4.13.0-16-lowlatency N/A  linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 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:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T450s dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO
2018-01-06 17:20:02 lanrat bug added subscriber lanrat
2018-04-11 08:50:55 Joel attachment added kern.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5110416/+files/kern.log
2018-04-11 08:51:51 Joel attachment added syslog https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5110429/+files/syslog
2018-04-11 08:54:52 Joel attachment added cpuinfo https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5110430/+files/cpuinfo
2018-04-22 07:39:38 Bug Watch Updater linux: status Incomplete Invalid
2018-05-16 16:05:11 msmolens bug added subscriber msmolens
2018-07-03 00:15:16 Yuriy Vidineev bug added subscriber Yuriy Vidineev
2018-10-24 11:49:35 Tomas Janousek bug added subscriber Tomas Janousek
2018-10-26 06:32:10 joe black linux (Ubuntu): status Triaged Confirmed
2018-10-26 07:46:07 joe black attachment added kern.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5205731/+files/kern.log
2018-12-04 07:58:47 Niklas Goerke attachment added dmesg https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5218810/+files/dmesg
2018-12-23 22:10:36 penalvch tags amd64 apport-bug artful kernel-bug-exists-upstream kernel-bug-exists-upstream-4.14-rc8 latest-bios-1.30 regression-release wayland-session amd64 apport-bug artful bios-outdated-1.35 kernel-bug-exists-upstream kernel-bug-exists-upstream-4.14-rc8 regression-release wayland-session
2018-12-23 22:12:48 penalvch linux (Ubuntu): status Confirmed Triaged
2019-01-06 02:26:09 peterrus bug added subscriber peterrus
2019-03-04 08:55:43 Bug Watch Updater linux: status Invalid Confirmed
2019-03-10 04:27:41 Bug Watch Updater linux: status Confirmed Incomplete
2019-03-10 14:26:12 lanrat removed subscriber lanrat
2019-03-24 01:15:49 Bug Watch Updater linux: status Incomplete Confirmed
2019-03-27 11:53:14 Bug Watch Updater linux: importance High Medium
2019-04-05 13:32:55 Mathieu Aubert bug added subscriber Mathieu Aubert
2019-04-23 03:41:38 Daniel van Vugt marked as duplicate 1550779
2019-04-27 19:30:54 David Tomaschik bug added subscriber David Tomaschik
2019-07-24 21:07:40 Brad Figg tags amd64 apport-bug artful bios-outdated-1.35 kernel-bug-exists-upstream kernel-bug-exists-upstream-4.14-rc8 regression-release wayland-session amd64 apport-bug artful bios-outdated-1.35 cscc kernel-bug-exists-upstream kernel-bug-exists-upstream-4.14-rc8 regression-release wayland-session
2019-10-17 17:05:41 penalvch removed duplicate marker 1550779
2019-10-17 17:06:51 penalvch summary [Lenovo ThinkPad T450s] Issues after docking and locking: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [Lenovo ThinkPad T450s] Issues after docking and locking
2019-10-17 17:11:00 penalvch tags amd64 apport-bug artful bios-outdated-1.35 cscc kernel-bug-exists-upstream kernel-bug-exists-upstream-4.14-rc8 regression-release wayland-session amd64 apport-bug artful bios-outdated-1.37 cscc kernel-bug-exists-upstream-4.14-rc8 needs-upstream-testing regression-release wayland-session
2019-10-17 17:16:56 penalvch attachment removed dmesg https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5218810/+files/dmesg
2019-10-17 17:16:57 penalvch attachment removed kern.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5205731/+files/kern.log
2019-10-17 17:17:12 penalvch linux (Ubuntu): status Triaged Incomplete
2019-11-10 10:52:17 limod attachment added kernel log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5304201/+files/kernel.log
2019-11-23 23:29:20 Bug Watch Updater linux: status Confirmed Fix Released