[Bug 100572] [i915][SKL] Headless mode media transcoding is 20-30% slower comparing to connected monitor use case

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100572

--- Comment #6 from Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com> ---
I tried not loading the DMC firmware and can confirm that the issue is not
present in that case.

Also, it is possible to reproduce this in the default kernel config (no pinning
is required) simply with igt/benchmarks/gem_latency -n 0 in which case the perf
difference between the two setups was ~8x in my testing.

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