I see something similar (but different) to bug 1766076 on a Dell 5530:
- Using kernel 5.0.4 from UKUU (because current Ubuntu kernel suffers from other bugs that make this dock unusable)
- BIOS 1.6.0
- TB16 dock with a single monitor on the display port, providing power, using native enumeration setting in the BIOS
- Microsoft comfort curve keyboard, webcam, headset connected to dock USB ports
- Wired ethernet via the dock.
Keyboard stops responding frequently. There is no output in dmesg when this happens. If I later unplug the keyboard I see a disconnection message in dmesg and I can reconnect it to the same port. Sometimes it works for a day after this, other times it works for <60s.
Other devices disconnect too but the pattern is different. Much more likely to see the disconnect under heavy load, such as webcam/headset getting disconnected during a conference call.
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ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC4: shaun 2837 F.... pulseaudio
/dev/snd/controlC3: shaun 2837 F.... pulseaudio
/dev/snd/controlC1: shaun 2837 F.... pulseaudio
/dev/snd/controlC0: shaun 2837 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 19.04
InstallationDate: Installed on 2018-12-11 (133 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
MachineType: Dell Inc. Precision 5530
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-13-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
RelatedPackageVersions:
linux-restricted-modules-5.0.0-13-generic N/A
linux-backports-modules-5.0.0-13-generic N/A
linux-firmware 1.178
Tags: disco
Uname: Linux 5.0.0-13-generic x86_64
UpgradeStatus: Upgraded to disco on 2019-04-24 (0 days ago)
UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo wireshark
_MarkForUpload: True
dmi.bios.date: 02/01/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.8.1
dmi.board.name: 0FP2W2
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.8.1:bd02/01/2019:svnDellInc.:pnPrecision5530:pvr:rvnDellInc.:rn0FP2W2:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Precision
dmi.product.name: Precision 5530
dmi.product.sku: 087D
dmi.sys.vendor: Dell Inc.
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1822089
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.