Public bug reported: In disco; I have this issue where my external monitor (a ThinkVision P24h-10) connected to my ThinkPad T480s turns off for short times while actively working on the system. I noticed that if I don't move my mouse at all while it's off, it stays off.
The T480s is connected to the monitor via USB-C; the monitor provides DP, USB, and Power over that connection. When the display turns off, USB devices continue working. I have attached /sys/debug/dri/0 output from when the monitor was off (a) vs on (b). Other related bits: * This also happens on HDMI, but much less often * There are no log messages when the display turns on/off in the journal. ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: apport-collected disco ** Tags added: apport-collected disco ** Description changed: I have this issue where my external monitor (a ThinkVision P24h-10) connected to my ThinkPad T480s turns off for short times while actively working on the system. I noticed that if I don't move my mouse at all while it's off, it stays off. The T480s is connected to the monitor via USB-C; the monitor provides DP, USB, and Power over that connection. When the display turns off, USB devices continue working. - I have attached /sys/debug/dri/0 output from when the monitor was off - (a) vs on (b). + I have attached /sys/debug/dri/0 output from when the monitor was off (a) vs on (b). + --- + ProblemType: Bug + ApportVersion: 2.20.10-0ubuntu23 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC2: jak 17606 F.... pulseaudio + /dev/snd/controlC1: jak 17606 F.... pulseaudio + /dev/snd/controlC0: jak 17606 F.... pulseaudio + CurrentDesktop: GNOME + DistroRelease: Ubuntu 19.04 + InstallationDate: Installed on 2018-03-14 (383 days ago) + InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180313) + MachineType: LENOVO 20L8S02D00 + Package: linux (not installed) + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-7-generic root=/dev/mapper/ubuntu--vg-root ro rootflags=subvol=@ quiet splash i915.enable_gvt=1 intel_iommu=on vt.handoff=1 + ProcVersionSignature: Ubuntu 5.0.0-7.8-generic 5.0.0 + RelatedPackageVersions: + linux-restricted-modules-5.0.0-7-generic N/A + linux-backports-modules-5.0.0-7-generic N/A + linux-firmware 1.178 + Tags: disco + Uname: Linux 5.0.0-7-generic x86_64 + UpgradeStatus: Upgraded to disco on 2018-11-20 (133 days ago) + UserGroups: adm cdrom dip kvm libvirt lpadmin lxd plugdev sambashare sbuild sudo + _MarkForUpload: True + dmi.bios.date: 02/19/2019 + dmi.bios.vendor: LENOVO + dmi.bios.version: N22ET53W (1.30 ) + dmi.board.asset.tag: Not Available + dmi.board.name: 20L8S02D00 + dmi.board.vendor: LENOVO + dmi.board.version: Not Defined + dmi.chassis.asset.tag: No Asset Information + dmi.chassis.type: 10 + dmi.chassis.vendor: LENOVO + dmi.chassis.version: None + dmi.modalias: dmi:bvnLENOVO:bvrN22ET53W(1.30):bd02/19/2019:svnLENOVO:pn20L8S02D00:pvrThinkPadT480s:rvnLENOVO:rn20L8S02D00:rvrNotDefined:cvnLENOVO:ct10:cvrNone: + dmi.product.family: ThinkPad T480s + dmi.product.name: 20L8S02D00 + dmi.product.sku: LENOVO_MT_20L8_BU_Think_FM_ThinkPad T480s + dmi.product.version: ThinkPad T480s + dmi.sys.vendor: LENOVO -- 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/1822854 Title: External monitor turns off for short period of times / until moving mouse Status in gnome-shell package in Ubuntu: New Status in linux package in Ubuntu: New Bug description: In disco; I have this issue where my external monitor (a ThinkVision P24h-10) connected to my ThinkPad T480s turns off for short times while actively working on the system. I noticed that if I don't move my mouse at all while it's off, it stays off. The T480s is connected to the monitor via USB-C; the monitor provides DP, USB, and Power over that connection. When the display turns off, USB devices continue working. I have attached /sys/debug/dri/0 output from when the monitor was off (a) vs on (b). Other related bits: * This also happens on HDMI, but much less often * There are no log messages when the display turns on/off in the journal. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1822854/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp