I am facing issue after my ubuntu patch update. The black screen is coming with Started GNOME Display Manager [OK]. I have tried all the below steps.

  1. I did the changes on boot to recovery mode


sudo mount -o remount,rw /
sudo nano /etc/gdm3/custom.conf




  1. Opened the Grub in boot terminal with repalcing nomodeset single with quite splash. But unable to update the lightdm. I tried with internet dhclient to set up internet and echo of google but still unable to do it.

  2. I have tried to run it in lower kernel version before 1 week it was running but after reboot that also gone.

My kernel is . This machine having 3 Nvidia GPUs. I have set up with Cuda 10 & CudNN 7.4

Please help me. Feel free to ask if any clarification required.


By Using the USB Flash Drive, I created a ISO Ubuntu boot stick. By the help of boot stick, I choose the last option during installation to override my old installation without any lose of data.

I got my work space back with all the data. I just got to do the rework on Nvidia driver installation with new Kernel. Cuda and cuDNN are already there.No need to reinstall. I am able to continue my work but one more issue. On reboot i am getting complete black page after login to Desktop from Ubuntu. So i am managing to go inside by recovery mode ...

Any help to resolve the black screen would be appreciated.

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