http://bugzilla.suse.com/show_bug.cgi?id=979190 Bug ID: 979190 Summary: Some applications fail to connect to X Server under LightDM Classification: openSUSE Product: openSUSE Distribution Version: Leap 42.1 Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: X.Org Assignee: xorg-maintainer-bugs@forge.provo.novell.com Reporter: mhsabbagh@outlook.com QA Contact: xorg-maintainer-bugs@forge.provo.novell.com Found By: --- Blocker: --- Hello. When running Steam under GDM on openSUSE 42.1, everything works fine. However, after changing the display manager from GDM to LightDM, and rebooting the system, Steam (And possibly many other applications or games) fails to connect to the X server under LightDM. The displayed error message is: "Unable to open a connection to X. Check your DISPLAY environment variable and make sure that you have enabled X. If you are running remotely, make sure that you have a remote connection which will allow an X connection. For more information visit https://support.steampowered.com/kb_article.php?ref=4050-WOJB-0608". However, the $display variable is already set to ":0" in my case, yet, it gives the error. Steps to reproduce: 1. Install lightdm package via zypper. 2. Change the default display manager from YaST2 to lightdm. 3. Reboot the system. 4. Try to run Steam and you will see the problem. -- You are receiving this mail because: You are on the CC list for the bug.