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Thread: Macbook Air: black screen on second HDMI display

  1. #1
    Join Date
    Jul 2011
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    20

    Macbook Air: black screen on second HDMI display

    My machine is an Apple Macbook Air 1,1 from Early 2008, and I'm running Ubuntu 12.04 with kernel Linux 3.2.0-58-generic-pae.

    When I connect it to an HD TV via the minidisplayport-DVI (Apple adapter) --> DVI-HDMI (cable) I get the TV recognized in System Settings -> Displays, but the TV only gets a completely *black screen* signal (i.e. it gets a signal, because if I unplug the cable or disable the TV screen in Ubuntu the TV then says 'no signal', but this signal is black screen).

    The output from xrandr (with cable plugged in) is

    Code:
    Screen 0: minimum 320 x 200, current 3200 x 1080, maximum 8192 x 8192
    LVDS1 connected 1280x800+0+12 (normal left inverted right x axis y axis) 286mm x 179mm
           1280x800       61.2*+
           1024x768       60.0  
           800x600        60.3     56.2  
           640x480        59.9  
    VGA1 disconnected (normal left inverted right x axis y axis)
    HDMI1 connected 1920x1080+1280+0 (normal left inverted right x axis y axis) 1280mm x 720mm
           1920x1080      60.0*+   50.0     24.0  
           1600x1200      60.0  
           1280x1024      60.0  
           1360x768       59.8  
           1024x768       60.0  
           800x600        60.3  
           640x480        60.0  
    TV1 unknown connection (normal left inverted right x axis y axis)
           848x480        59.9 +
           640x480        59.9 +
           1024x768       59.9  
           800x600        59.9

    ----------

    Am I missing some configuration in Ubuntu? or is that a driver problem for the TV or the Apple adapter? Could it be related to Compiz or nvidia drivers?

  2. #2
    Join Date
    Feb 2013
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    34

    Re: Macbook Air: black screen on second HDMI display

    Probably nVidia.... (I'm gonna take a blind stab) Does your Mac have intel intergreated graphics?

  3. #3
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    Jul 2011
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    Re: Macbook Air: black screen on second HDMI display

    I'm sorry for the delay in reply
    From Apple page I read
    Graphics and video support
    Intel GMA X3100 graphics processor with 144MB of DDR2 SDRAM shared with main memory


    Extended desktop and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 1920 by 1200 pixels on an external display, both at millions of colors

    Built-in iSight camera

    Mini-DVI port

  4. #4
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    Re: Macbook Air: black screen on second HDMI display

    Do you know what I should try?

  5. #5
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    Jul 2011
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    Re: Macbook Air: black screen on second HDMI display

    actually, I'm a bit confused, since I get
    Code:
    cat /proc/driver/nvidia/version
    No such file or directory
    so am I not using any nvidia drivers? could installing some (like nvidia-current) help?

  6. #6
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    Lubuntu Development Release

    Re: Macbook Air: black screen on second HDMI display

    Moved to Apple Users. Your thread may find more attention from people having installed Ubuntu on their Apple machine here.
    | My old and mostly abandoned blog |
    Linux user #413984 ; Ubuntu user #178
    J'aime les fraises.
    Nighty night me lovelies!

    | Reinstalling Ubuntu ? Please check this bug first ! |
    | Using a ppa ? Please install ppa-purge from universe, you may need it should you want to revert packages back |
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  7. #7
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    Re: Macbook Air: black screen on second HDMI display

    OK, hope someone can help

  8. #8
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    Jul 2011
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    Re: Macbook Air: black screen on second HDMI display

    nvidia seems to be ruled out, since with lspci I get
    Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller
    any other ideas?

  9. #9
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    Re: Macbook Air: black screen on second HDMI display

    even better
    Code:
    00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 03) (prog-if 00 [VGA controller])
        Subsystem: Apple Inc. Device 00a2
        Flags: bus master, fast devsel, latency 0, IRQ 42
        Memory at 90000000 (64-bit, non-prefetchable) [size=1M]
        Memory at 80000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 5110 [size=8]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: intelfb, i915
    
    00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (secondary) (rev 03)
        Subsystem: Apple Inc. Device 00a2
        Flags: bus master, fast devsel, latency 0
        Memory at 90100000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: <access denied>

  10. #10
    Join Date
    Jul 2011
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    Re: Macbook Air: black screen on second HDMI display

    is it correct to say that with these
    Code:
    nicolo@mba:~$ sudo lshw -C display
      *-display:0             
           description: VGA compatible controller
           product: Mobile GM965/GL960 Integrated Graphics Controller (primary)
           vendor: Intel Corporation
           physical id: 2
           bus info: pci@0000:00:02.0
           version: 03
           width: 64 bits
           clock: 33MHz
           capabilities: msi pm vga_controller bus_master cap_list rom
           configuration: driver=i915 latency=0
           resources: irq:42 memory:90000000-900fffff memory:80000000-8fffffff ioport:5110(size=8)
      *-display:1 UNCLAIMED
           description: Display controller
           product: Mobile GM965/GL960 Integrated Graphics Controller (secondary)
           vendor: Intel Corporation
           physical id: 2.1
           bus info: pci@0000:00:02.1
           version: 03
           width: 64 bits
           clock: 33MHz
           capabilities: pm bus_master cap_list
           configuration: latency=0
           resources: memory:90100000-901fffff
    I should not install nvidia drivers?

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