Hello,
I've been trying to enable PC8 on my Haswell i7-4600M Notebook but i'm not sure if it is working properly.
During idle states (No X running) 915_pc8_status tells me that PC8 seems to be disabled:
Requirements met: no
GPU idle: no
Disable count: 3
IRQs disabled: no
Enabled: no
GPU idle: no
Disable count: 3
IRQs disabled: no
Enabled: no
Is this supposed to be right?
Powertop 2.5 reports that Package C-States never go above pc3 while Core C7-HSW and GPU RC6 states are always reached with > 90%.
Package | Core | CPU 0
| | C0 active 0.7%
| | POLL 0.0% 0.0 ms
| | C1E-HSW 0.9% 1.3 ms
C2 (pc2) 90.8% | |
C3 (pc3) 0.0% | C3 (cc3) 0.4% | C3-HSW 0.4% 0.4 ms
C6 (pc6) 0.0% | C6 (cc6) 0.0% | C6-HSW 0.0% 0.0 ms
C7 (pc7) 0.0% | C7 (cc7) 97.1% | C7s-HSW 97.5% 5.8 ms
| Core | CPU 1
| | C0 active 0.8%
| | POLL 0.0% 0.0 ms
| | C1E-HSW 0.0% 0.0 ms
| |
| C3 (cc3) 0.1% | C3-HSW 0.1% 0.3 ms
| C6 (cc6) 0.0% | C6-HSW 0.0% 0.0 ms
| C7 (cc7) 92.0% | C7s-HSW 92.3% 12.0 ms
| | C0 active 0.8%
| | POLL 0.0% 0.0 ms
| | C1E-HSW 0.0% 0.0 ms
| |
| C3 (cc3) 0.1% | C3-HSW 0.1% 0.3 ms
| C6 (cc6) 0.0% | C6-HSW 0.0% 0.0 ms
| C7 (cc7) 92.0% | C7s-HSW 92.3% 12.0 ms
| GPU |
| |
| Powered On 0.6% |
| RC6 99.4% |
| RC6p 0.0% |
| |
| Powered On 0.6% |
| RC6 99.4% |
| RC6p 0.0% |
Params are: i915.i915_enable_rc6=1 pcie_aspm=force i915.i915_disable_power_well=0 i915.enable_pc8=1 "acpi_osi=!Windows 2012" acpi_backlight=legacy
dmesg goes here: http://pastebin.ca/2516591
Any ideas?
_______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx