Same thing is happening to me since the last Dom0 update. My ultrawide 29" LG external screen stopped working at the native 2560x1080 resolution and instead is working at 1920x1080.
I have a Lenovo Thinkpad T430s. I was using nouveau driver but the same thing is happening with the integrated Intel graphic card. Fortunately I had a full backup from August 9 so, reinstalling Qubes 3.2 and restoring Dom0 and all the VM the problem is, temporarily, fixed and I have back 2560x1080 resolution. But the most maddening thing is that I tried several different distro (Linux Mint 18.2, MX 16.0, Manjaro) and I have the same problem. Only 1920x1080px. In the previous 1.5 years I had no problem of resolution with Qubes 3.2 and Linux Mint 18.1. Tried cvt and xrandr --newmode and --addmode to no avail so far (no effect on Qubes, screen blanked on Linux Mint). Again, any idea? Thanks -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/52103ef6-b9a4-43e3-8c4c-17a85ac0a3de%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
