Another thing to note, when I get flickering monitor loss unplugging and plugging in the dock seems to resolve. Same thing going on in the logs then: [221027.376079] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A [221027.387002] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A [221027.387064] [drm:drm_atomic_state_default_clear [drm]] Clearing atomic state 00000000665ad61a [221027.387095] [drm:__drm_atomic_state_free [drm]] Freeing atomic state 00000000665ad61a [221027.391513] [drm:drm_mode_addfb2 [drm]] [FB:252] [221027.391551] [drm:drm_atomic_state_init [drm]] Allocated atomic state 00000000665ad61a [221027.391579] [drm:drm_atomic_get_crtc_state [drm]] Added [CRTC:91:pipe A] 000000002b78400a state to 00000000665ad61a [221027.391601] [drm:drm_atomic_get_plane_state [drm]] Added [PLANE:31:plane 1A] 000000008e58a6fb state to 00000000665ad61a [221027.391623] [drm:drm_atomic_set_fb_for_plane [drm]] Set [FB:252] for [PLANE:31:plane 1A] state 000000008e58a6fb [221027.391645] [drm:drm_atomic_check_only [drm]] checking 00000000665ad61a [221027.391764] [drm:intel_plane_atomic_calc_changes [i915]] [CRTC:91:pipe A] with [PLANE:31:plane 1A] visible 1 -> 1, off 0, on 0, ms 0 [221027.391841] [drm:intel_atomic_get_global_obj_state [i915]] Added new global object 00000000d2037ee9 state 00000000b32f3203 to 00000000665ad61a [221027.391870] [drm:drm_atomic_nonblocking_commit [drm]] committing 00000000665ad61a nonblocking [221027.391994] [drm:intel_fbc_enable [i915]] reserved 49152000 bytes of contiguous stolen space for FBC, threshold: 1
I also have a corrupt cursor issue over time - I'll see if I can get a photo of that. -- 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/1889342 Title: Thunderbolt Dock Loses Monitors Status in linux package in Ubuntu: In Progress Bug description: After a suspend or locking the only way to regain external monitors is to unplug and replug the thunderbolt dock back in. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-42-generic 5.4.0-42.46 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: john 2682 F.... pulseaudio /dev/snd/controlC0: john 2682 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Jul 29 00:22:26 2020 DistributionChannelDescriptor: # This is the distribution channel descriptor for the OEM CDs # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-focal-amd64-20200502-85 InstallationDate: Installed on 2020-07-13 (15 days ago) InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary 20200502-05:58 MachineType: Dell Inc. XPS 13 9300 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=5e141eb0-e03b-4c39-b826-f94e0d2715ea ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-42-generic N/A linux-backports-modules-5.4.0-42-generic N/A linux-firmware 1.187.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/08/2020 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.11 dmi.board.name: 0WX9VX dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.0.11:bd05/08/2020:svnDellInc.:pnXPS139300:pvr:rvnDellInc.:rn0WX9VX:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9300 dmi.product.sku: 096D dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889342/+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
