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(EE) [drm] fails to open device
(EE) VESA(0) : No valid modes
(EE) Screen(s) found, but none have a usuable configuration.

Fatal server error

sudo apt-get remove --purge xserver-xorg

sudo apt-get install xserver-xorg

sudo dpkg-reconfigure xserver-xorg This command gave no output

Now startx gives these errors
Failed to load module "nouveau" (module does not exist, 0)
                "nv" "vesa" "fbdev" ( modules do not exist,0)