I had strange horizontal flickering after upgrading to Ubuntu 24.10. The
intel_iommu=igfx_off option solved this for me.
❰peter❙~❱✔≻ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-6.11.0-9-generic root=/dev/mapper/vgubuntu-root ro
intel_iommu=igfx_off quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
vt.handoff=7
❰peter❙~❱✔≻ uname -a
Linux peter-laptop 6.11.0-9-generic #9-Ubuntu SMP PREEMPT_DYNAMIC Mon Oct 14
13:19:59 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
❰peter❙~❱✔≻ lspci -nnk | grep -A3 VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation Alder Lake-UP3 GT2
[Iris Xe Graphics] [8086:46a8] (rev 0c)
Subsystem: Dell Device [1028:0b0b]
Kernel driver in use: i915
Kernel modules: i915, xe
BIOS Information
Vendor: Dell Inc.
Version: 1.26.0
Release Date: 08/14/2024
System Information
Manufacturer: Dell Inc.
Product Name: Latitude 7430
Processor Information
Socket Designation: U3E1
Type: Central Processor
Family: Core i7
Manufacturer: Intel(R) Corporation
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https://bugs.launchpad.net/bugs/2062951
Title:
Random flickering with Intel i915 (Gen9 GPUs in 6th-8th gen CPUs) on
Linux 6.8
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