https://bugs.freedesktop.org/show_bug.cgi?id=106306
Bug ID: 106306 Summary: amdgpu CIK power management issues (wattman) Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: grmat@sub.red
Created attachment 139211 --> https://bugs.freedesktop.org/attachment.cgi?id=139211&action=edit dmesg output pp_num_states
Testing upstream kernel (4.17.0-rc2-ga27fc14219f2) because of the newly introduced "wattman" functionality. On my CIK hardware (Hawaii/R9 290X), none of the sysfs and hwmon entries work. Writing to sysfs files like pp_sclk_od, pp_od_clk_voltage works (no error) but the hardware/driver does not react to the changes. Reading sysfs/hwmon files like power1_cap_max, pp_table, pp_od_clk_voltage print no output. Trying to read from pp_num_states even segfaults (attached is the dmesg output of the corresponding error).