** Description changed: - This morning I upgraded to Ubuntu 21.04. + This morning I upgraded to Kubuntu 21.04. I use two external monitors connected to my Dell XPS laptop via a Dell WD19 dock. Post-upgrade the monitors and also network functionality through the dock appear to have completely stopped functioning. When the dock is plugged in and the computer is booted the monitors do not enable. When the dock is not plugged in the computer boots normally. When I look at the dmesg output there appears to be some notable errors when I plug the dock in: [ 516.173451] xhci_hcd 0000:39:00.0: xHCI host controller not responding, assume dead [ 516.207480] xhci_hcd 0000:39:00.0: HC died; cleaning up [ 521.313422] pcieport 0000:02:00.0: can't change power state from D3cold to D0 (config space inaccessible) [ 555.140320] xhci_hcd 0000:39:00.0: xHCI host controller not responding, assume dead [ 555.140343] xhci_hcd 0000:39:00.0: HC died; cleaning up [ 560.291086] pcieport 0000:02:00.0: can't change power state from D3cold to D0 (config space inaccessible) [ 850.385934] [drm:drm_dp_send_dpcd_read [drm_kms_helper]] *ERROR* mstb 00000000eaa106e4 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [ 850.499763] [drm:drm_dp_send_dpcd_read [drm_kms_helper]] *ERROR* mstb 00000000eaa106e4 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [ 851.717630] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 851.815190] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 856.231021] [drm:drm_dp_send_dpcd_read [drm_kms_helper]] *ERROR* mstb 00000000eaa106e4 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [ 856.301269] [drm:drm_dp_send_dpcd_read [drm_kms_helper]] *ERROR* mstb 00000000eaa106e4 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [ 856.320487] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 856.343208] i915 0000:00:02.0: [drm] *ERROR* CPU pipe B FIFO underrun [ 856.382831] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 860.704920] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 860.765138] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 860.894454] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 860.965337] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 861.115198] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 861.182111] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 866.232326] [drm:drm_dp_send_dpcd_read [drm_kms_helper]] *ERROR* mstb 00000000eaa106e4 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [ 866.351715] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 866.454536] [drm:drm_dp_send_dpcd_read [drm_kms_helper]] *ERROR* mstb 00000000eaa106e4 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [ 866.473097] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful [ 866.534697] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful With the dock plugged in: * neither monitor displays although they are present under display configuration * since my laptop screen is not usually on if both monitors are present on the dock the immediate result was no display at all under the dock was detached * network connectivity is not established although the network device appears under networks Unfortunately I lack the skills to diagnose this further without assistance or to install a more recent kernel to see if it is resolved there. It appears that communications between the laptop and the Dock are not going well to my eyes (is this what link training is on Thunderbolt) I'm happy to provide further information... although in a few days the lack of Dock and monitors will be a bit of an issue and I may have to roll something back. ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: linux-image-5.11.0-16-generic 5.11.0-16.17 ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12 Uname: Linux 5.11.0-16-generic x86_64 ApportVersion: 2.20.11-0ubuntu65 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC2: mulhollandd 1940 F.... pulseaudio - /dev/snd/controlC1: mulhollandd 1940 F.... pulseaudio - /dev/snd/controlC0: mulhollandd 1940 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC2: mulhollandd 1940 F.... pulseaudio + /dev/snd/controlC1: mulhollandd 1940 F.... pulseaudio + /dev/snd/controlC0: mulhollandd 1940 F.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Sat May 1 08:57:26 2021 InstallationDate: Installed on 2020-06-13 (321 days ago) InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: Dell Inc. XPS 13 9360 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.11.0-16-generic root=/dev/mapper/vgkubuntu-root ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-5.11.0-16-generic N/A - linux-backports-modules-5.11.0-16-generic N/A - linux-firmware 1.197 + linux-restricted-modules-5.11.0-16-generic N/A + linux-backports-modules-5.11.0-16-generic N/A + linux-firmware 1.197 SourcePackage: linux UpgradeStatus: Upgraded to hirsute on 2021-04-30 (0 days ago) dmi.bios.date: 03/09/2021 dmi.bios.release: 2.15 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.15.1 dmi.board.name: 0115N5 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.15.1:bd03/09/2021:br2.15:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn0115N5:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9360 dmi.product.sku: 075B dmi.sys.vendor: Dell Inc.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1926809 Title: WD19 dock stops working in Ubuntu 21.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1926809/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
