amdgpu: Manual Card Configuration Change

[Josh Fuhs]

Thanks. I tried 5.9.1 and I think there's still a problem, or at least something different.

Using the same configuration script, I noticed that my cards are running a lot hotter. For example, here's total power consumption of a two-card system with two different kernels:

    5.8.14: 460W
    5.9.1:  560+W

Memory and system clocks are initially set the same on all cards in all cases.

Josh


‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Monday, October 19, 2020 2:22 PM, Alex Deucher <alexdeucher at gmail.com> wrote:

> On Sun, Oct 18, 2020 at 4:32 PM Josh Fuhs Joshua.Fuhs at pm.me wrote:
>
> > Hello all,
> > Regarding amdgpu, I've been using some Radeon 5700XTs for compute work with kernels through 5.8.14. I recently tried kernel 5.9.0, and found that the following is no longer allowed:
> > echo "m 1 200" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
> > Is this an expected change? If so, where should I look for documentation regarding how to manually configure these cards with this kernel. Note, I've had this working with 5.8 kernels for months.
>
> It was a bug. Fixed in 5.9.1.
>
> Alex