Xorg.conf – How to Change xorg.conf File with Permission

The partition where you install ubuntu is inside windows partition which is your host and it uses ntfs file system. So, you can't use chown, chmod and chgrp command to change the file permission.

Don't be dis-hearted just change one line in the file /etc/default/grub

From :- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

To :- GRUB_CMDLINE_LINUX_DEFAULT="rootflags=umask=002,uid=1000,gid=1000 quiet splash"

After you make the changes save the file, you need to run

sudo update-grub

afterwards to update /boot/grub/grub.cfg

WARNING: These changes give you full access to all your files on your host, including system files and it is very very dangerous, so make sure to stay away from system folders ie. your windows system and only try this when you really really need to

For reference you may visit Changing file permission on host in Wubi & How to change file permissions of host in Wubi?

The xorg.conf does not exist by default any more. You CAN create one though.

Boot into recovery mode and select Root Shell. Then run:

X -configure

Then:

cp /root/xorg.conf.new /etc/X11/xorg.conf

Reboot and you can edit the new Xorg.conf.

You don't even need to reboot, just do sudo /etc/init.d/gdm restart