On Do, 2019-12-05 at 08:52 +0100, Guido Riedel wrote:

Hi,

Since Kernel 5.3.11 I got a significant increased baseline Power consumption. I tried up to 5.4.1 on arch linux. Powertop shows an increase from 3.6W on 5.3.10 to 5.x W on higher Kernels. My laptop fan spins a lot more.

I read that a lot of Intel stuff has entered the Kernel in 5.3.11, could this cause it? Will it stay like this in the next Versions? Can I maybe switch something off etc. to get a lower baseline power?

I hope I write to the right address, otherwise sorry.

7e34f4e4aad3 ("drm/i915/gen8+: Add RC6 CTX corruption WA"), which has been backported to 5.3.11 causes a major power regression due to Intel GPUs not being able to enter rc6 anymore.

Fixes for this are -next, but I don't know what the plans for landing and maybe backporting are.

Regards, Lucas