https://bugzilla.kernel.org/show_bug.cgi?id=201539 --- Comment #19 from Sean Birkholz (supasean@xxxxxxxxxxx) --- I've done a bit of digging and I've managed to get a proper hysteresis value to appear in a 5.1.14 kernel built from source. I now have this output from sensors: amdgpu-pci-0100 Adapter: PCI adapter vddgfx: +1.00 V fan1: N/A (min = 0 RPM, max = 0 RPM) temp1: +66.0°C (crit = +104000.0°C, hyst = +90.0°C) power1: 29.02 W (cap = 208.00 W) I don't know why proper values are not set automatically because I've found the correct values in tons of source files but none of the #defines appear to be used? And much of the source doesn't appear to differ between 5.1.14 and 4.18.x I modified (kernel src)/drivers/gpu/drm/amd/powerplay/inc/pp_thermal.h and changed the values of -273150 to 90000. This corrects the hysteresis value but I'm still searching for where the critical temp value is actually set. I *think* fixing these values may fix the fan problem because why would a fan spin up if its nowhere near the critical or hysteresis values? No need. Except when the critical value is 19x the temp of the sun, the card gets so hot it protects itself by maxing the fans for a short burst. That is my theory anyway, hope to be able to test it soon but no promises. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
