Hi Timur,
A quick follow-up from the same MacPro6,1 with dual FirePro D700s. I have now tested the fixes after they reached stock stable kernels: - Linux 6.18.57-1-lts: both GPUs correctly transition from 300/150 MHz idle to 850/1370 MHz under Vulkan compute load, then return to 300/150 MHz afterward. - Linux 7.2.10-arch1-1: same result; both D700s reach 850/1370 MHz correctly under load. For comparison, Linux 7.2.9, before these stable backports, still kept both GPUs at 300/150 MHz under the same type of compute workload. So I can confirm that the stable backports of: drm/amd/pm/si: Check AMD_IS_MOBILITY flag for PPSMC_SYSTEMFLAG_GPIO_DC drm/amd/pm/si: Fix updating clock limits on AC/DC resolve the DPM issue on the dual FirePro D700 in the MacPro6,1. Thanks for the fixes. Best, Mikael
