I have the same issue with Ubuntu 24.04 (kernel 6.8.0-41-generic) and a Dell XPS 13 9340 with the non-touch internal display. External monitors are no problem. The horizontal lines only appear when moving the mouse.
My hardware: - Base: XPS 13 9340 - Processor: Intel(R) Core(TM) Ultra 7 Prozessor 155H (24 MB Cache, 16 Cores, up to 4,8 GHz) - LCD: 13,4", FHD+ 1.920 x 1.200, 30–120 Hz, ohne Touchfunktion, reflexionsarm, 500 cd/m2, EyeSafe, InfinityEdge - Memory: 64 GB, LPDDR5X, 7.467 MT/s, integriert, Dual-Channel - Hard Drive: First Drive M.2-PCIe-NVMe-SSD mit 2 TB - Graphics/Video memory cards: Intel ARC Grafik The issue is fixed when upgrading to `sudo apt install linux-oem-24.04` (`6.8.0-1011-oem`) as suggested here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2062951/comments/70: -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2072973 Title: Primary screen goes crazy since Ubuntu 24.04 update (6.8 fails but 6.5 works) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2072973/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
