I also update 6.8.0-45 (22.04) and use intel_iommu=igfx but not
completly solve the problem (seems it rare but happen)
00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics
520] (rev 07) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Hewlett-Packard Company EliteBook 840 G3
Flags: bus master, fast devsel, latency 0, IRQ 132, IOMMU group 0
Memory at e0000000 (64-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
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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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