LinuxQuestions.org

LinuxQuestions.org (http://www.linuxquestions.org/questions/index.php)
-   Linux - Hardware (http://www.linuxquestions.org/questions/forumdisplay.php?f=18)
-   -   Running 3 monitors off an Intel HD 3000 - possible? (http://www.linuxquestions.org/questions/showthread.php?t=4175430983)

Rotten194 10-07-2012 12:12 PM

Running 3 monitors off an Intel HD 3000 - possible?
 
Im trying to set up my laptop so when it's at home, I can use three monitors. I already have it working perfectly with an external HDMI screen. I now want to use the VGA port to add another. Here's the output of xrandr -1 --verbose: (unused modes removed because they're insanely long)

Code:

jon@ubuntu: xrandr -q --verbose                                            (0)
Screen 0: minimum 320 x 200, current 3046 x 1050, maximum 8192 x 8192
LVDS1 connected 1366x768+0+282 (0x45) normal (normal left inverted right x axis y axis) 344mm x 193mm
        Identifier: 0x41
        Timestamp:  911960
        Subpixel:  horizontal rgb
        Gamma:      1.0:1.0:1.0
        Brightness: 1.0
        Clones:   
        CRTC:      0
        CRTCs:      0 1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                  filter:
        EDID:
                00ffffffffffff004ca3415500000000
                00130103802213780ace859e5b4c9426
                17505400000001010101010101010101
                010101010101411c56a0500016303020
                250058c1100000190000000f00000000
                00000000001eb4027400000000fe0053
                414d53554e470a2020202020000000fe
                00313536415430352d5430320a2000b8
        BACKLIGHT: 3 (0x00000003)        range:  (0,7)
        Backlight: 3 (0x00000003)        range:  (0,7)
        scaling mode:        Full aspect
                supported: None        Full        Center      Full aspect
  1366x768 (0x45)  72.3MHz -HSync -VSync *current +preferred
        h: width  1366 start 1414 end 1446 total 1526 skew    0 clock  47.4KHz
        v: height  768 start  770 end  775 total  790          clock  60.0Hz
VGA1 connected (normal left inverted right x axis y axis)
        Identifier: 0x42
        Timestamp:  911960
        Subpixel:  unknown
        Clones:   
        CRTCs:      0 1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                  filter:
        EDID:
                00ffffffffffff0010ac103043323741
                0e0e01030e221b78eeee9da3544c9926
                0f4f54a54b008180714f010101010101
                010101010101302a009851002a403070
                1300520e1100001e000000ff00325933
                3131343354413732430a000000fc0044
                454c4c203137303346500a20000000fd
                00384c1e500e000a2020202020200001
  1280x1024 (0x4e)  108.0MHz +HSync +VSync +preferred
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock  64.0KHz
        v: height 1024 start 1025 end 1028 total 1066          clock  60.0Hz
HDMI1 connected 1680x1050+1366+0 (0x4c) normal (normal left inverted right x axis y axis) 474mm x 296mm
        Identifier: 0x43
        Timestamp:  911960
        Subpixel:  unknown
        Gamma:      1.0:1.0:1.0
        Brightness: 1.0
        Clones:   
        CRTC:      1
        CRTCs:      0 1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                  filter:
        EDID:
                00ffffffffffff004c2d7c0332325141
                0b120103802f1e782a78f1a655489b26
                125054bfef80b30081808140714f0101
                0101010101017c2e90a0601a1e403020
                3600da281100001a000000fd00384b1e
                510e000a202020202020000000fc0053
                796e634d61737465720a2020000000ff
                0048394e513330393937380a202000d2
        Broadcast RGB:        Full
                supported: Full        Limited 16:2
        audio:        auto
                supported: off          auto        on         
  1680x1050 (0x4c)  119.0MHz +HSync -VSync *current +preferred
        h: width  1680 start 1728 end 1760 total 1840 skew    0 clock  64.7KHz
        v: height 1050 start 1053 end 1059 total 1080          clock  59.9Hz
DP1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x44
        Timestamp:  911960
        Subpixel:  unknown
        Clones:   
        CRTCs:      0 1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                  filter:
        Broadcast RGB:        Full
                supported: Full        Limited 16:2
        audio:        auto
                supported: off          auto        on

This shows VGA1 connected, but not having a CRTC assigned. When I try to adjust the monitor positions with ARandR, I get this:

http://i.imgur.com/X4hDV.png

The size doesn't expand to allow the VGA monitor to fit in. Also, trying to apply it anyways I get an error:
Code:

XRandR failed:
XRandR returned error code 1: xrandr: cannot find crtc for output LVDS1

(sometimes instead of LVDS1 it's VGA1).

LVDS1 is my primary laptop monitor, HDMI1 is the working external display, and VGA1 is the new display I'm trying to hook up.

Any ideas? I'm just kind of throwing stuff at the wall to see what sticks, so some help would really, well, help.

cascade9 10-08-2012 12:55 AM

Intel HD 3000 offically supports only 2 monitors. Only the newest HD 2500/4000 suport 3 monitors (and its a 'manufactuer option' so not all HD2500/4000 systems will be able to use 3 monitors)

Quote:

Starting with the 3rd Generation Intel® Core™ Processors with Intel® HD Graphics 4000/2500, three displays support may be possible depending on your computer's configuration. Check with your computer manufacturer if three displays are supported on your computer and which display combinations are supported.
http://www.intel.com/support/graphic...S-031040.htm#3

You might be able to get the 3rd monitor going with a USB->VGA adapter, I'm not sure about that as I never use USB->VGA adapters.

Rotten194 10-19-2012 07:10 PM

Quote:

Originally Posted by cascade9 (Post 4799924)
Intel HD 3000 offically supports only 2 monitors. Only the newest HD 2500/4000 suport 3 monitors (and its a 'manufactuer option' so not all HD2500/4000 systems will be able to use 3 monitors)



http://www.intel.com/support/graphic...S-031040.htm#3

You might be able to get the 3rd monitor going with a USB->VGA adapter, I'm not sure about that as I never use USB->VGA adapters.

Thanks for the pointer about USB->VGA. I ordered one and it got here a few days ago. I've been fiddling trying to get it to work to no avail. I'll think I'll post a new thread, though.


All times are GMT -5. The time now is 05:30 AM.