Problem / Symptoms:

I have Win10 / Ubuntu 18.10 dual boot on my Asus GL703GS laptop which has worked great for months. However, after connecting / disconnecting HDMI cord while in Win10, Ubuntu can apparently no longer use the graphics card.

  • It lists the display as "Unknown Display"

  • Resolution is set to 800x480 and no option to change it.

  • On Win10 the GPU works and it had worked on Ubuntu for months prior so I don't think it's the hardware.
  • I suspect Windows has locked up some display driver resource that persists after reboot.

Already tried:

  • Cannot reinstall Nvidia drivers in Ubuntu, says "nvidia-uvm" is already loaded and it cannot be unloaded. Tried reinstalling through the Nvidia .run file, Ubuntu automatic driver update, etc, no luck.
  • Tried uninstalling Nvidia drivers and removing all traces of it in Win10 and reinstalling it. No point in this process changed anything for Ubuntu, same issues there.
  • Tried many tutorials / answers related to xrandr but none of them work at all.
  • No results from any lsof nvidia commands.

Machine Details:

  • Output of lspci | grep NVIDIA

01:00.0 VGA compatible controller: NVIDIA Corporation GP104M [GeForce GTX 1070 Mobile] (rev a1)

  • Output of ubuntu-drivers devices

... vendor : NVIDIA Corporation model : GP104M [GeForce GTX 1070 Mobile] driver : nvidia-driver-390 - distro non-free recommended driver : xserver-xorg-video-nouveau - distro free builtin

  • Output of lsmod | grep -i nvidia

nvidia_uvm 786432 0 nvidia_drm 40960 0 nvidia_modeset 1040384 1 nvidia_drm nvidia 16621568 2 nvidia_uvm,nvidia_modeset drm_kms_helper 172032 1 nvidia_drm drm 458752 3 drm_kms_helper,nvidia_drm ipmi_msghandler 102400 2 ipmi_devintf,nvidia

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