Created attachment 121382 [details] kern.log Setup: ====== Platform: Broxton P A0 Platform CPU Name : Intel(R) @ 1.2 GHz (family: 6, model: 92, stepping: 8) – 4 cores SoC : BROXTON-P A0 CRB : Apollo Lake RVPC1 Fab1 Reworks : R14, R06C and R16 Software: ========= BIOS (IFWI Version): APLK_IFWI_X64_R_2015_41_5_02 KSC : 1.02 Linux distribution: Ubuntu 15.10 64 bits Kernel: drm-intel-nightly 4.4.0 8114b00 from http://cgit.freedesktop.org/drm-intel/ drm: tag libdrm-2.4.66 e342c0f from http://cgit.freedesktop.org/mesa/drm/ mesa: tag mesa-11.0.8 261daab from http://cgit.freedesktop.org/mesa/mesa/ cairo: tag 1.15.2 db8a7f1 from http://cgit.freedesktop.org/cairo waffle: master bb29b2a from https://github.com/waffle-gl/waffle xorg-server-macros: master d7acec2 from git://git.freedesktop.org/git/xorg/util/macros libva: tag libva-1.6.1 cb418f6 from http://cgit.freedesktop.org/libva/ vaapi-intel-driver: tag 1.6.1 2110b3a from http://cgit.freedesktop.org/vaapi/intel-driver Tool: ====== intel-gpu-tool: tag intel-gpu-tools-1.13 51e965f from http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/ Monitors: Asus PB287Q (4K) Steps: ------ Boot with kernel boot command line i915.disable_power_well=0 1. Execute command: fbset -xres 1800 -yres 1024 2. Connect any external screen 3. Execute command: dmesg |grep power_well 4. Execute command: sudo -s cd <…>/intel-gpu-tools/tests ./pm_lpsp Actual results: --------------- 3. Command returns: [ 0.785680] [drm:intel_power_well_enable] enabling always-on [ 0.785680] [drm:intel_power_well_enable] enabling power well 1 [ 0.785682] [drm:intel_power_well_enable] enabling DC off [ 0.785684] [drm:intel_power_well_enable] enabling power well 2 4. Tests are skip: IGT-Version: 1.13-NOT-GIT (x86_64) (Linux: 4.4.0-nightly+ x86_64) Test requirement not met in function __real_main213, file pm_lpsp.c:232: Test requirement: supports_lpsp(devid) Subtest screens-disabled: SKIP Subtest edp-native: SKIP Subtest edp-panel-fitter: SKIP Subtest non-edp: SKIP Expected result: ----------------- 3. Log shows disabling power well 4. Tests are Pass
Reproduced with all PM options activated in Bios (S0ix, Cx, PCx, Render C6, GT PM ...)
LPSP is not supported on APL.
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