There are no errors in that log file. Instead of focusing on that, please try to describe the problem you are trying to solve...
** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1917129 Title: startx error Status in xorg-server package in Ubuntu: Incomplete Bug description: X.Org X Server 1.19.6 Release Date: 2017-12-20 [ 1285.878] X Protocol Version 11, Revision 0 [ 1285.878] Build Operating System: Linux 4.15.0-124-generic x86_64 Ubuntu [ 1285.878] Current Operating System: Linux ubuntu 4.4.0-87-generic #110-Ubuntu SMP Tue Jul 18 12:55:35 UTC 2017 x86_64 [ 1285.878] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-87-generic root=UUID=535b2e54-2659-4d31-904f-fe8fc83565a9 ro [ 1285.878] Build Date: 30 November 2020 08:01:56PM [ 1285.878] xorg-server 2:1.19.6-1ubuntu4.8 (For technical support please see http://www.ubuntu.com/support) [ 1285.878] Current version of pixman: 0.34.0 [ 1285.878] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 1285.878] Markers: (--) probed, () from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 1285.879] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Feb 27 02:20:48 2021 [ 1285.882] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 1285.884] (==) No Layout section. Using the first Screen section. [ 1285.884] (==) No screen section available. Using defaults. [ 1285.884] () |-->Screen "Default Screen Section" (0) [ 1285.884] (**) | |-->Monitor "" [ 1285.885] (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. [ 1285.885] (==) Automatically adding devices [ 1285.885] (==) Automatically enabling devices [ 1285.885] (==) Automatically adding GPU devices [ 1285.885] (==) Automatically binding GPU devices [ 1285.885] (==) Max clients allowed: 256, resource mask: 0x1fffff [ 1285.890] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. [ 1285.890] Entry deleted from font path. [ 1285.890] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist. [ 1285.890] Entry deleted from font path. [ 1285.890] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist. [ 1285.890] Entry deleted from font path. [ 1285.890] (WW) The directory "/usr/share/fonts/X11/Type1" does not exist. [ 1285.890] Entry deleted from font path. [ 1285.890] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist. [ 1285.890] Entry deleted from font path. [ 1285.890] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist. [ 1285.890] Entry deleted from font path. "/var/log/Xorg.0.log" 227L, 14930C To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1917129/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp