Sorry, you need to enable JavaScript to visit this website.

No beamer on VGA

4 posts / 0 new
Damien Cassou's picture
Starter
Damien Cassou

Mar 24, 2014 - 07:35am

  •  
     
     

    Hi,

     

    I've just installed the Intel drivers using the 1.0.4 installer for Linux. I expected these drivers to help me solve my problem with VGA beamers on Ubuntu 13.10 but they didn't. VGA Beamers are not detected on Ubuntu but they are when I dual-boot Mac OS (I'm on a MacBook Pro 9.2). Even if beamers on VGA do not work, my external screen on mini display port works well). Could you please help me configure my system so that beamers work?

     

     

    Thanks

     
    Mar 24, 2014 - 07:35am
  • I am having similar trouble. External monitors with VGA and DVI work fine on the MacBook Pro 9.2 with the Apple MiniDP to VGA or DVI adaptors. I have tried the modesetting and intel drivers for xorg, however the beamer just does not work under linux.

    For me the problem seems to be, that the beamer is connected via permanently installed RGB BNC cables and a RGB to VGA adaptor. The beamer works if I connect directly via the beamers' VGA port. Sadly this is not an option in the large lecture hall.

    Apr 29, 2014 - 12:55am
  • It seems that the beamer is not detected.
    I could solve my problem by manually adding the modes using xrandr and forcing the output to be activated.
    (see http://askubuntu.com/questions/150879/can-i-force-vga-signal-output-even-when-xrandr-shows-disconnected)

    In my case using the Apple VGA cable I used
    xrandr --add-mode DP1 1024x768
    xrandr --set-output DP1 --mode 1024x768

    Apr 30, 2014 - 12:34pm
  • I have come to notice the hard way, that my solution provided above only works sometimes...
    Thorough Investigation has shown, that sometimes means: "A properly recognized monitor has been successfully connected to the macbook via the vga cable before connecting the beamer and the macbook has not been rebooted since."

    May 12, 2014 - 09:53am
  • Hi - just noticed this thread - For what it's worth, I don't think this is an Intel driver
    specific problem, you might be best served by reporting it on freedesktop.org.

    May 16, 2014 - 10:01am