Does anyone know why Ubuntu 18.04 with lightdm and nvidia-driver-390 hangs with black screen before login,...












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With lightdm lsmod shows nvidia driver loaded. I can tty and log in. I can use primes-select and switch to intel graphics.



I installed some of the packages gdm3 brings with it ( tgir1.2-atspi-2.0 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-upowerglib-1.0 gjs libgjs0g libmozjs-52-0 libxcb-res0), then I can use dpkg-reconfigure lightdm, and it will log in once with nvidia. But if I log out it is back to black screen.



I can get by with gdm3, but why? this seems like vodoo! I suspect that nvidia blob is not supporting lightdm.



I run a lenova y56-70 laptop with optimus, Using Custom LXDE desktop from ubuntu server 18.04-64.



I fouggt with it in a Bodhilinux install also but after giving up and some time passing by, the next time I tried, it installed, and worked.










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    With lightdm lsmod shows nvidia driver loaded. I can tty and log in. I can use primes-select and switch to intel graphics.



    I installed some of the packages gdm3 brings with it ( tgir1.2-atspi-2.0 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-upowerglib-1.0 gjs libgjs0g libmozjs-52-0 libxcb-res0), then I can use dpkg-reconfigure lightdm, and it will log in once with nvidia. But if I log out it is back to black screen.



    I can get by with gdm3, but why? this seems like vodoo! I suspect that nvidia blob is not supporting lightdm.



    I run a lenova y56-70 laptop with optimus, Using Custom LXDE desktop from ubuntu server 18.04-64.



    I fouggt with it in a Bodhilinux install also but after giving up and some time passing by, the next time I tried, it installed, and worked.










    share|improve this question







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    frenchie is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      With lightdm lsmod shows nvidia driver loaded. I can tty and log in. I can use primes-select and switch to intel graphics.



      I installed some of the packages gdm3 brings with it ( tgir1.2-atspi-2.0 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-upowerglib-1.0 gjs libgjs0g libmozjs-52-0 libxcb-res0), then I can use dpkg-reconfigure lightdm, and it will log in once with nvidia. But if I log out it is back to black screen.



      I can get by with gdm3, but why? this seems like vodoo! I suspect that nvidia blob is not supporting lightdm.



      I run a lenova y56-70 laptop with optimus, Using Custom LXDE desktop from ubuntu server 18.04-64.



      I fouggt with it in a Bodhilinux install also but after giving up and some time passing by, the next time I tried, it installed, and worked.










      share|improve this question







      New contributor




      frenchie is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      With lightdm lsmod shows nvidia driver loaded. I can tty and log in. I can use primes-select and switch to intel graphics.



      I installed some of the packages gdm3 brings with it ( tgir1.2-atspi-2.0 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-upowerglib-1.0 gjs libgjs0g libmozjs-52-0 libxcb-res0), then I can use dpkg-reconfigure lightdm, and it will log in once with nvidia. But if I log out it is back to black screen.



      I can get by with gdm3, but why? this seems like vodoo! I suspect that nvidia blob is not supporting lightdm.



      I run a lenova y56-70 laptop with optimus, Using Custom LXDE desktop from ubuntu server 18.04-64.



      I fouggt with it in a Bodhilinux install also but after giving up and some time passing by, the next time I tried, it installed, and worked.







      graphics lightdm nvidia-optimus






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      asked 5 hours ago









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