Come to think of it, I have the same problem with USB-C -> DisplayPort on 12th gen.
-- 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/1988989 Title: HDMI over USB-C unstable since kernel 5.19 on Intel 12th Gen. Status in linux package in Ubuntu: Confirmed Bug description: Having upgraded to 5.19.0-15, my display connected over a USB-C → HDMI connection goes off and on multiple times a minute, rendering it unusable. Downgrading back to 5.15.0-27 makes it work again. I've bisected mainline kernels from https://kernel.ubuntu.com/~kernel- ppa/mainline/ to reach: v5.18.19 GOOD v5.19-rc3 BAD ProblemType: Bug DistroRelease: Ubuntu 22.10 Package: linux-image-5.19.0-15-generic 5.19.0-15.15 ProcVersionSignature: Ubuntu 5.19.0-15.15-generic 5.19.0 Uname: Linux 5.19.0-15-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.23.0-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: michal 7948 F.... wireplumber /dev/snd/controlC0: michal 7948 F.... wireplumber /dev/snd/seq: michal 7939 F.... pipewire CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Sep 7 14:28:48 2022 HibernationDevice: RESUME=none InstallationDate: Installed on 2022-08-31 (6 days ago) InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Alpha amd64 (20220829) MachineType: Framework Laptop (12th Gen Intel Core) ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=pl_PL.UTF-8 SHELL=/bin/zsh ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_zw6n2j@/vmlinuz-5.19.0-15-generic root=ZFS=rpool/ROOT/ubuntu_zw6n2j ro quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-5.19.0-15-generic N/A linux-backports-modules-5.19.0-15-generic N/A linux-firmware 20220831.gitd3c92280-0ubuntu1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/15/2022 dmi.bios.release: 3.4 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: 03.04 dmi.board.asset.tag: * dmi.board.name: FRANMACP04 dmi.board.vendor: Framework dmi.board.version: A4 dmi.chassis.asset.tag: FRANDACPA42321000N dmi.chassis.type: 10 dmi.chassis.vendor: Framework dmi.chassis.version: A4 dmi.modalias: dmi:bvnINSYDECorp.:bvr03.04:bd07/15/2022:br3.4:svnFramework:pnLaptop(12thGenIntelCore):pvrA4:rvnFramework:rnFRANMACP04:rvrA4:cvnFramework:ct10:cvrA4:skuFRANDACP04: dmi.product.family: 13in Laptop dmi.product.name: Laptop (12th Gen Intel Core) dmi.product.sku: FRANDACP04 dmi.product.version: A4 dmi.sys.vendor: Framework To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1988989/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
