[Intel-gfx] [HSW issue] Can not turn on LVDS panel with kernel 3.8-rc2 on some ivybridge NB

[lawsonlu]

Hi,

The attached is the log with kernel option "drm.debug=0xe".
After booting into desktop with kernel 3.8-rc2, plugin the HDMI, the HDMI screen display OK, but the LVDS is not. 


Rgds,
Lawson


  ----- Original Message ----- 
  From: lawsonlu 
  To: intel-gfx at lists.freedesktop.org 
  Sent: Monday, January 14, 2013 3:53 PM
  Subject: [HSW issue] Can not turn on LVDS panel with kernel 3.8-rc2 on some ivybridge NB


  Hi,

  I use kernel 3.8-rc2 with haswell support in currently linux os, but the kernel will cause black screen on LVDS panel, and the eDP panel is right.
  Another word, the haswell patch in kernel 3.8 can not turn on LVDS panel on some sample. Can anybody help me for this issue?
  The test platform hardware spec as the following table.


         CPU   Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz 
         Platform   Intel Ivybridge Chipset 
         RAM  6 GB DDR3 
         HDD  Hitachi HTS543232A7A384 ( 320.1 GB) 
           
         VGA  Intel Corporation Device [8086:0166] (rev 08) 
            
         Audio   Intel Corporation Panther Point High Definition Audio Controller [8086:1e20] (rev 04) 
         Audio codec   Codec:Codec: Realtek ALC269VB
         Vendor ID:0x10ec0269
         Subsystem ID:0x1025064b
         Revision ID:0x100100 



  Rgds,
  Lawson
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