Thanks for the bug report. I am slightly concerned the attached kernel log mentions "evdi" which is used for USB-connected displays (via DisplayLink chips inside dongles).
So long as you have USB-C ports, evdi/DisplayLink should not be necessary. So I suggest either: (a) Get some native USB-C to monitor cables that don't have built-in dongles; or (b) Install the manufacturer's driver (https://www.synaptics.com/products/displaylink- graphics/downloads/ubuntu), which I know from previous experience with DisplayLink is more reliable than the default built-in driver. Please also run this command to check what monitors are connected: grep connect /sys/class/drm/*/status ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1993532 Title: Unable to see second monitor Status in linux package in Ubuntu: Incomplete Bug description: I have a second monitor plugged into this laptop. Under 5.15.0-52-generic this monitor isn't seen by Ubuntu, whether via a thunderbolt dongle or directly into the HDMI port. When I boot it back into 5.15.0-50-generic it works just fine. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-52-generic 5.15.0-52.58 ProcVersionSignature: Ubuntu 5.15.0-50.56-generic 5.15.60 Uname: Linux 5.15.0-50-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: robin 4304 F.... pulseaudio /dev/snd/controlC0: robin 4304 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Oct 19 14:53:25 2022 InstallationDate: Installed on 2022-03-17 (216 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20220313) MachineType: Dell Inc. Latitude 7320 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-50-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.15.0-50-generic N/A linux-backports-modules-5.15.0-50-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.5 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/15/2022 dmi.bios.release: 1.17 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.17.2 dmi.board.name: 07MHG4 dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.17.2:bd06/15/2022:br1.17:svnDellInc.:pnLatitude7320:pvr:rvnDellInc.:rn07MHG4:rvrA02:cvnDellInc.:ct10:cvr:sku0A34: dmi.product.family: Latitude dmi.product.name: Latitude 7320 dmi.product.sku: 0A34 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1993532/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
