I recently upgraded my system from Ubuntu 15.10 to 16.04LTS. But after the upgrade, my extended display is not being detected. I am connecting the second display through an HDMI port. I even tried System settings > Displays >detect display.

Does anyone know how to fix this?


The issue was with the nvidia graphics driver. This can be fixed by following the steps below:

  1. Run

    sudo apt-get purge ^nvidia
  2. Run

    sudo add-apt-repository ppa:graphics-drivers/ppa
  3. Run

    sudo apt-get update
  4. Run

    sudo apt-get install nvidia-387

    For this, check what the latest version is... in my case as of January 2018 it's nvidia-387.

The graphics versions are here on Launchpad.

Reboot and your graphics issue should be fixed.

  • 1
    Could you post the lspci output? I solved the problem by upgrading the kernel to 4.5.2. but I use a dual graphics system with AMDGPU. Second display on HDMI. – Mookey May 3 '16 at 6:39
  • @Mookey 00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b) 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) 00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b) 00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04) 00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04) 00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 1 (rev e4) – denny john May 3 '16 at 6:41
  • 2
    Cool. Hacking this into my 16.04 on a dell e6420 destroyed my lightdm resolution and I'm not able to login. – ferdy Jun 17 '16 at 19:29
  • 2
    E: Unable to locate package nvidia-364 – mjp Jan 27 '17 at 20:02
  • 1
    Instead of nvidia using Nouveau display driver from xserver-video-nouveau solved problem for me – Yogesh Aug 8 '17 at 16:19

protected by Community Jun 6 '16 at 10:11

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