On Fri, Mar 15, 2013 at 12:29 AM, Jani Nikula <jani.nikula at linux.intel.com> wrote: > Fun. The BIOS seems to ask for zero backlight. Maybe it means something > else for Windows 8. White is the new black or something. Interesting. > > Just one idea, please attach hexdumps of > /sys/kernel/debug/dri/0/i915_opregion (with debugfs mounted there, > obviously) for both kernels. Maybe we're missing something there that > the BIOS thinks Windows 8 should handle. Two kernels have different dump. BTW I have switched to tip of git again. Last pull from the git seems fix the can't boot problem. I attach the files here. The good one is tip with win8 acpi revert. Chris -------------- next part -------------- A non-text attachment was scrubbed... Name: i915_opregion.bad Type: application/octet-stream Size: 22620 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20130315/11d537f8/attachment-0002.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: i915_opregion.good Type: application/octet-stream Size: 22620 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20130315/11d537f8/attachment-0003.obj>
