- Jul 15, 2018
Just a quick note for for anyone else who's using one of these on a debian derivative (proxmox, ubuntu, etc) on cpu frequency scaling:Fun aside, it looks like the Debian Stretch live disc image does not contain a cpufreq governor or any power saving tunables. Who knows, we can potentially tweak the power savings a little further down. Guess I'll be looking for a second t730 some times in the near future to do a deeper dive.
Append "amd_iommu=on iommu=pt pcie_acs_override=downstream" to the command line if you're going to use passthrough.A couple further notes: idle cpu frequency scaling doesn't work on proxmox until you install cpufrequtils, idle power draw drops quite a bit after that. Also, turbo scaling doesn't work until you adjust the boot command line in /etc/default/grub, I'm using the following:
Note: "radeon.bapm=1" enables boost frequency scaling so you'll have access to up to 3.7GHz depending on core load. Frequency reporting is a bit funky, install "linux-cpupower" and run "turbostat" for accurate boost clock readings.