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Thread: 3-monitor setup broken after upgrade ("Could not set configuration for CRTC")

  1. #1
    Join Date
    Oct 2013
    Beans
    2

    3-monitor setup broken after upgrade ("Could not set configuration for CRTC")

    Hey all!

    I'm using a Thinkpad T430 with Intel HD4000 graphics. I use this computer with a Thinkpad dock/port replicator, through which I've had a 3-display setup including the laptop's own display and two external DVI displays. I recently upgraded from Ubuntu 13.04 to 13.10, and suddenly one of the displays quit working with the error "Could not set configuration for CRTC65". Thinking it might have been doing this because I simply did an in-place upgrade, I did a fresh reinstall of the O.S., but no dice. Also, it is not always the same monitor that is disabled -- sometimes it decides it wants to use the other instead, as long as both are connected.

    This problem I'm having sounds similar or identical to these:

    http://askubuntu.com/questions/19581...d4000-graphics

    http://askubuntu.com/questions/94196...itors-and-a-tv

    These both claim that a 3-display setup is not feasible in Ubuntu, but this cannot be -- I had a flawless 3-display setup with no special configuration needed under 13.04. Why not 13.10?

    Let me know what I need to do to provide you with information on this issue. Til then I'm sitting at work with one dead monitor, which hampers productivity a bit in my case.

  2. #2
    Join Date
    Oct 2013
    Beans
    2

    Re: 3-monitor setup broken after upgrade ("Could not set configuration for CRTC")

    Bump -- it's been one week, issue persists.

  3. #3
    Join Date
    May 2008
    Beans
    214
    Distro
    Lubuntu

    Re: 3-monitor setup broken after upgrade ("Could not set configuration for CRTC")

    Have you looked for some clues on your log files /var/log?

  4. #4
    Join Date
    Aug 2009
    Beans
    2

    Re: 3-monitor setup broken after upgrade ("Could not set configuration for CRTC")

    I've had the same experience with the same hardware on Debian - I'm wondering if it's kernel related?

  5. #5
    Join Date
    Feb 2014
    Beans
    1

    Re: 3-monitor setup broken after upgrade ("Could not set configuration for CRTC")

    Hi, did you solve the problem? I had the same problem after upgrading from 13.04 to 13.10. Now I rebooted and chose an older kernel version and I can use all three monitors again.

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