Bug 45867

Summary:

[IVB 3pipe] 3 Pipe Doesn't Work with Eaglemont Card

Product:

DRI

Reporter:

Yi Sun <yi.sun>

Component:

DRM/Intel

Assignee:

Jesse Barnes <jbarnes>

Status:

CLOSED INVALID

QA Contact:

Severity:

normal

Priority:

medium

CC:

ben, chris, daniel, jbarnes, kan.liang, yi.sun

Version:

unspecified

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
The dmesg when only VGA display.	none
The dmesg when all the 3 display work.	none
dmesg with VGA+DP+HDMI	none

Description Yi Sun 2012-02-09 23:34:30 UTC

System Environment:
--------------------------
Platform:        IronLake
Kernel:  (drm-intel-testing)396ee23db6b76354e487fd2cfdacbd989442f81d

Bug detailed description:
-------------------------
We connected 3 displays to a IVB machine, by a DP on board, a VGA on board and a  DP on the Eaglemont card. Then only VGA could display, and the other two DP are black screen. The dmesg is attached(dmesg.incorrect)

And we got the CRTCs value with testdisplay:
3       48      (0,0)   (0x0)
  1680x1050 60 1680 1728 1760 1840 1050 1053 1059 1080 0x9 0x48 119000
5       48      (0,0)   (0x0)
  2560x1600 60 2560 2608 2640 2720 1600 1603 1609 1646 0x9 0x48 268500
7       48      (0,0)   (0x0)
  1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x48 154000

As my understanding, two of the three timings should be the same while display with 3 pipe, right?

So, I had another try. I booted the machine without any display, after that plug in a DP display to the board, a DP to EM card and a VGA to the board. Then all of three displays come up. Also the dmesg is attached(dmesg.correct).And the CRTCs value is as following:

CRTCs:
id      fb      pos     size
3       25      (0,0)   (0x0)
  1024x768 75 1024 1040 1136 1312 768 769 772 800 0x5 0x40 78800
5       25      (0,0)   (0x0)
  1024x768 75 1024 1040 1136 1312 768 769 772 800 0x5 0x40 78800
7       25      (0,0)   (0x0)
  1024x768 75 1024 1040 1136 1312 768 769 772 800 0x5 0x40 78800

Comment 1 Yi Sun 2012-02-09 23:37:10 UTC

Created attachment 56847 [details]
The dmesg when only VGA display.

Comment 2 Yi Sun 2012-02-09 23:38:15 UTC

Created attachment 56848 [details]
The dmesg when all the 3 display work.

Comment 3 Yi Sun 2012-02-09 23:41:57 UTC

BTW, the combination 2DP + HDMI doesn't work, too.

Comment 4 Guang Yang 2012-03-05 00:54:48 UTC

Created attachment 58019 [details]
dmesg with VGA+DP+HDMI

I have try with the Kernel:
(drm-intel-testing)9c5a1897768918a941aebbeaefd9f698358c7cf9
the issue still occurs. I have try the combination VGA+DP+HDMI,a VGA on board,DP and HDMI on the Eaglemont card,but only the VGA and DP can work.

Comment 5 Jesse Barnes 2012-04-24 09:08:53 UTC

I'm pretty sure this is just an eaglemont limitation; the boards are really configurable but for 3 pipe I think you need two of them.  Since 3 pipe works ok w/o an eaglemont (with eDP plus any 2) I'm going to close this as invalid.

Comment 6 Yi Sun 2012-04-26 00:36:32 UTC

(In reply to comment #5)
> I'm pretty sure this is just an eaglemont limitation; the boards are really
> configurable but for 3 pipe I think you need two of them.  Since 3 pipe works

Jesse,

What's the meaning when you said "two of them"?

> ok w/o an eaglemont (with eDP plus any 2) I'm going to close this as invalid.

Comment 7 Jesse Barnes 2012-04-26 10:47:49 UTC

> What's the meaning when you said "two of them"?

I meant two eaglemont cards, but I'm not even sure if our SDVs support
that... either two cards or a special jumper config on the card.

Jesse

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