I've installed 5.18.2 from the mainline ppa yesterday and have been running it without i915.enable_dc=0 intel_idle.max_cstate=2 since then. No flickering so far.
I've installed 5.18.2 from the mainline ppa yesterday and have been running it without i915.enable_dc=0 intel_idle. max_cstate= 2 since then. No flickering so far.