James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> writes: > on 3.5 killing X causes idle power to go 14W -> 5.9W > on 3.4.6 killing X causes idle power to go 6.8W -> 5.7W That's actually pretty good news -- you're just not getting to RC6 when X is running, but RC6 is otherwise working. And, yes, the GPU really can suck that much power. The debug info that Chris pointed you at should tell a more complete story. For comparison, on my sandybridge box this morning: :::::::::::::: i915_drpc_info :::::::::::::: RC information accurate: yes Video Turbo Mode: yes HW control enabled: yes SW control enabled: no RC1e Enabled: no RC6 Enabled: yes Deep RC6 Enabled: no Deepest RC6 Enabled: no Current RC state: RC6 Core Power Down: no RC6 "Locked to RPn" residency since boot: 0 RC6 residency since boot: 898339862 RC6+ residency since boot: 0 RC6++ residency since boot: 0 :::::::::::::: i915_cur_delayinfo :::::::::::::: GT_PERF_STATUS: 0x00000729 RPSTAT1: 0x00048700 Render p-state ratio: 7 Render p-state VID: 41 Render p-state limit: 24 CAGF: 350MHz RP CUR UP EI: 54631us RP CUR UP: 136us RP PREV UP: 0us RP CUR DOWN EI: 0us RP CUR DOWN: 0us RP PREV DOWN: 0us Lowest (RPN) frequency: 350MHz Nominal (RP1) frequency: 350MHz Max non-overclocked (RP0) frequency: 1200MHz :::::::::::::: i915_fbc_status :::::::::::::: FBC disabled: multiple pipes are enabled -- keith.packard@xxxxxxxxx
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