1. 20 2月, 2016 1 次提交
    • P
      drm/i915/fbc: enable FBC by default on HSW and BDW · a98ee793
      Paulo Zanoni 提交于
      These platforms should be fine now.
      
      FBC can allow very significant power savings for screen-on idle
      systems, but it is worth mentioning that a lot of people won't get
      significant power savings by enabling this feature because they may
      have something else preventing the system from getting into the
      deepest sleep states. Examples may include a hungry wifi device or a
      max_performance SATA link power management policy. You can check your
      PC state residencies on the powertop "Idle stats" tab. I recommend
      trying to run "sudo powertop --auto-tune" and then seeing if the
      residencies improve.
      
      Oh, and in case you - the person reading this commit message - found
      this commit through git bisect, please do the following:
       - Check your dmesg and see if there are error messages mentioning
         underruns around the time your problem started happening.
       - Download intel-gpu-tools, compile it, and run:
         $ sudo ./tests/kms_frontbuffer_tracking --run-subtest '*fbc-*' 2>&1 | tee fbc.txt
         Then send us the fbc.txt file, especially if you get a failure.
         This will really maximize your chances of getting the bug fixed
         quickly.
       - Try to find a reliable way to reproduce the problem, and tell us.
       - Boot with drm.debug=0xe, reproduce the problem, then send us the
         dmesg file.
      
      v2: Don't enable by default on SKL.
      Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com>
      Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
      Link: http://patchwork.freedesktop.org/patch/msgid/1455655643-2535-1-git-send-email-paulo.r.zanoni@intel.com
      a98ee793
  2. 19 2月, 2016 4 次提交
  3. 18 2月, 2016 11 次提交
  4. 17 2月, 2016 14 次提交
  5. 16 2月, 2016 10 次提交