AceLan, Thanks! I tried this on laptop #1. At least so far linux-image-unsigned-6.8.0-99-generic_6.8.0-99.99_amd64 without any parameters did not show any flicker. Command line: BOOT_IMAGE=/boot/vmlinuz-6.8.0-99-generic root=UUID=c6b19f0f-68ff-4d8c-985a-c3ed88345389 ro quiet splash resume=UUID=f25913ea-6478-45dc-8f64-ea5d721a8f25 vt.handoff=7
But linux-image-unsigned-6.18.0-9-generic_6.18.0-9.9_amd64 does show a bit of flicker, and also the following message appears in /var/log/syslog: kernel: i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun Maybe I should have used the intel_iommu=intgpu_off" parameter? $ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.18.0-9-generic root=UUID=c6b19f0f-68ff-4d8c-985a-c3ed88345389 ro quiet splash resume=UUID=f25913ea-6478-45dc-8f64-ea5d721a8f25 vt.handoff=7 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2136958 Title: Random flickering with Intel i915 (CoffeeLake and WhiskeyLake) on Linux 6.8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2136958/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
