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Simon Gardling da62ed557c jellyfin: fix Arc A380 VAAPI transcode (ASPM power gating) ...

Arc A380 GPU (07:00.0) becomes unreachable (MMIO returns 0xFFFFFFFF)
when PCIe ASPM powersupersave puts it into L1.1/L1.2 substates.
Both i915 and xe drivers hit the same hardware failure.

Fix: disable runtime PM for the GPU in power-tune, run after powertop
so the override sticks. Use i915 driver (xe has iHD buffer mapping
failures on this GPU/kernel 6.12 combination).

2026-04-07 18:17:52 -04:00

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