I am using a Dell XPS 15 with 4K display. I am having some problem in X auto-configuring my laptop’s display.
If I connect an external monitor, X works fine. But if I disconnect it, from the logs, I see that X server gets successfully shut down. If I use LTS kernel, I am able to use my laptop display without any issues. But without connecting an external monitor I am unable to use my laptop’s built-in display using the latest kernel. I have included
/var/log/Xorg.1.log file. My log file is available on pastebin. Looking at lines with
(EE), I see that there is some problem in setting the correct modeline for my laptop’s display. I don’t have any custom configuration files in
/etc/X11/xorg.conf.d. Please let me know if any further information is needed.
Thanks in advance.