)]}'
{
  "commit": "a21101c46ca5b4320e31408853cdcbf7cb1ce4ed",
  "tree": "1a0015c8a8eea64d976c627471067079cf8db4bd",
  "parents": [
    "c2f828977ba5d17c13debba374ea252d18e5ccfb"
  ],
  "author": {
    "name": "Zhang Rui",
    "email": "rui.zhang@intel.com",
    "time": "Fri Sep 14 11:46:22 2007 +0800"
  },
  "committer": {
    "name": "Len Brown",
    "email": "len.brown@intel.com",
    "time": "Tue Sep 18 13:37:49 2007 -0400"
  },
  "message": "ACPI: video: _DOS\u003d0 by default to prevent hotkey hang\n\nIn the past, the Linux/ACPI video driver invoked _DOS\n(Display Output Switch) with the parameter 1\nto tell the BIOS to switch the video output display for us.\n\nBut this conflicts with Linux native graphics drivers,\nand can cause all sorts of issues, including hanging the system.\n\nhttp://bugzilla.kernel.org/show_bug.cgi?id\u003d6001\n\nHere we change the Linux default to evaluate _DOS\u003d0,\nwhich tells the BIOS to simply send us a hotkey event\nand not touch the graphics hardware.\n\nThe acpi video driver sends the display switch hotkey\nevent up through the intput layer, and X can interpret\nthat and use its native graphics driver to switch the display.\n\nFor the case where Linux has no native graphics driver running,\nor the graphics driver doesn\u0027t know how to switch video and\nthe BIOS (safely) does, the previous behaviour can be restored with:\n\n# echo 1 \u003e /proc/acpi/video/*/DOS\n\nSigned-off-by: Zhang Rui \u003crui.zhang@intel.com\u003e\nSigned-off-by: Len Brown \u003clen.brown@intel.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "3c9bb85a6a93f9465917876a856c42c30e4f15bf",
      "old_mode": 33188,
      "old_path": "drivers/acpi/video.c",
      "new_id": "6cb3e7b1214561d7b3d02572f925d8e8d6fd2f4f",
      "new_mode": 33188,
      "new_path": "drivers/acpi/video.c"
    }
  ]
}