[Bug 85048] [BDW-Y] DP display unable to light up boot with DP+eDP [DP not detected]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85048

--- Comment #10 from fangxun <xunx.fang at intel.com> ---
(In reply to Paulo Zanoni from comment #8)
> Please boot the machine, reproduce the bug, and then run the following
> command, inside the intel-gpu-tools/tools directory:

sudo ./intel_reg_read
> -d 0xC6204 0x130040 0x46200 0xC4030 0xC4000

Then please paste the output
> here.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10  9  8  7  6 
5  4  3  2  1  0
  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0 
0  1  1  0  0  0
0x130040 : 0x44000000
 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10  9  8  7  6 
5  4  3  2  1  0
  0  1  0  0  0  1  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0 
0  0  0  0  0  0
0x46200 : 0x21B
 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10  9  8  7  6 
5  4  3  2  1  0
  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  1  0  0  0 
0  1  1  0  1  1
0xC4030 : 0x10101010
 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10  9  8  7  6 
5  4  3  2  1  0
  0  0  0  1  0  0  0  0  0  0  0  1  0  0  0  0  0  0  0  1  0  0  0  0  0  0 
0  1  0  0  0  0
0xC4000 : 0x800000
 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10  9  8  7  6 
5  4  3  2  1  0
  0  0  0  0  0  0  0  0  1  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0 
0  0  0  0  0  0

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