I will close as a firmware update has resolved the issue.
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https://bugs.launchpad.net/bugs/1832091
Title:
Kernel 5.0.0-16 & 5.0.0-17 USB-2 keyboard on USB-C dock malfunction
Status in Linux:
Invalid
Status in linux package in Ubuntu:
Invalid
Bug description:
Upgrading to kernel package linux-image-5.0.0-16-generic causes the
keyboard which is a USB 2 device connected to a USB C hub on my Dell
XPS 13 to behave erratically. The previous kernel (linux-
image-5.0.0-15-generic) doesn't have this problem. (The keyboard is
fine when plugged directly into the laptop's USB rather than into the
USB C hub on 5.0.0-16, so it seems to be a USB C problem in 5.0.0-16).
Ubuntu 5.0.0-16.17~18.04.1-generic 5.0.8
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ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mcarans 3298 F.... pulseaudio
CurrentDesktop: X-Cinnamon
DistroRelease: Linux Mint 19.1
HibernationDevice: RESUME=UUID=7c0ba900-f99e-46fe-9dd8-7ff287d1c43f
InstallationDate: Installed on 2017-12-08 (547 days ago)
InstallationMedia: Linux Mint 18.3 "Sylvia" - Release amd64 20171124
MachineType: Dell Inc. XPS 13 9360
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-16-generic
root=UUID=b6c8e517-c0ed-4ec5-a257-85c0cac387b4 ro deadline quiet splash
vt.handoff=1
ProcVersionSignature: Ubuntu 5.0.0-16.17~18.04.1-generic 5.0.8
RelatedPackageVersions:
linux-restricted-modules-5.0.0-16-generic N/A
linux-backports-modules-5.0.0-16-generic N/A
linux-firmware 1.173.6
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
Tags: tessa
Uname: Linux 5.0.0-16-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/25/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.5.1
dmi.board.name: 0TPN17
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr2.5.1:bd01/25/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn0TPN17:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9360
dmi.product.sku: 082A
dmi.sys.vendor: Dell Inc.
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