Public bug reported:
On upgrade to hirsuit hippo, my Dell 9360 no longer detects a monitor
plugged into the thunderbolt usbc socket. If I reboot with the latest
kernel from Ubuntu 20.10 (version 5.8.0-50) it works perfectly,
detecting the monitor from kernel boot.
I have tried both a thunderbolt cable, where usb devices plugged into
the monitor are detected, but the monitor itself is not, and a
usbc<->displayport adaptor that puts the socket straight into DP
alternate mode. Neither work in 21.04.
Happy to try and debug this, but not sure where to start!
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/controlC0: phil 3089 F.... pulseaudio
CasperMD5CheckResult: unknown
CurrentDesktop: GNOME
Date: Thu Apr 22 20:11:35 2021
HibernationDevice: RESUME=UUID=8b5c4d3a-8f9a-420d-a564-3d58a0c0502b
InstallationDate: Installed on 2018-07-19 (1008 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0c45:670c Microdia Integrated Webcam HD
Bus 001 Device 002: ID 0cf3:e300 Qualcomm Atheros Communications QCA61x4
Bluetooth 4.0
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. XPS 13 9360
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.11.0-16-generic
root=/dev/mapper/ubuntu--vg-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
SourcePackage: linux
UpgradeStatus: Upgraded to hirsute on 2021-04-22 (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: 0PVG6D
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.:rn0PVG6D:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9360
dmi.product.sku: 082A
dmi.sys.vendor: Dell Inc.
mtime.conffile..etc.apport.crashdb.conf: 2019-04-29T12:11:49.292007
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug hirsute wayland-session
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https://bugs.launchpad.net/bugs/1925675
Title:
hirsuit kernel fails to detect monitor plugged into USBC thunderbolt
socket
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