The errors in your XorgLog.txt are due to the "nomodeset" in your kernel command line:
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-23-generic root=UUID=a9e49865-59bc-44ce-818f-6b5b2e1c89fe ro quiet splash drm.debug=0xe nomodeset Please remove "nomodeset" and it should work. ** Changed in: xorg-server (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1774657 Title: I945G don't load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1774657/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp