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Thread: 3rd monitor stopped working after driver "update"

  1. #1
    Join Date
    Aug 2013
    Beans
    24

    3rd monitor stopped working after driver "update"

    Hi All

    So I loaded 18.04 on my office machine (dual boot) and I was quite impressed that all three my monitors were working. A few days later I realized that Google Earth Pro was not rendering properly and after some searching I found a solution that said I should load an older version of my NVIDIA driver (3.90 I think it was), which worked as I could then use GEP. Only problem is my 3rd monitor has now stopped working. I tried reverting back to the last/previous driver but it still wouldn't come on.

    If I go into Display Settings it does not see the 3rd monitor, if I go into NVIDIA Settings I can see the 3rd monitor but it shows disabled. If I try and enable it it does not appear in Display Settings.

    I'm running 2 x GeFroce GT710 cards, with 1 x monitor on HDMI and 1 x monitor on DVI and then on the second GeForce I have 1 x monitor in HDMI. Linux sees both cards (can even see card's status under NVIDIA Settings). If I boot into Windows all monitors work so it's definitely not hardware related. I read some posts about some settings, but found that I did not have the described folders/locations for the NVIDIA settings so I'm a tad lost.

    Any ideas?

    Thanks,
    R

  2. #2
    Join Date
    Sep 2009
    Location
    Pennsylvania
    Beans
    2,947
    Distro
    Xubuntu

    Re: 3rd monitor stopped working after driver "update"

    Where did you get the drivers from?

  3. #3
    Join Date
    Aug 2013
    Beans
    24

    Re: 3rd monitor stopped working after driver "update"

    I used this command ... sudo apt install nvidia-driver-390 ... so it must be from the "normal" Ubuntu repositories.

  4. #4
    Join Date
    Aug 2013
    Beans
    24

    Re: 3rd monitor stopped working after driver "update"

    Booted with a Live cd and all three monitors worked again, so long story short, I reloaded Ubuntu, set the latest NVIDIA driver and all is working fine again (even Google Earth).

    PS. I did read quite a few posts saying there are generally issues running multiple GeForce cards so ended up using the onboard HDMI output and HDMI & DVI from the one card.

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