These LPL monitors are known for having busted EDID values, I recall a number of quirks for them was added to the xserver. However since you're using kernel modesetting, I think maybe some of those quirks did not get ported over to the kernel, thus you're seeing the regression. IIRC, at one point seb128 added an override to force dpi to 96x96 in GNOME, which is why it started working.
Anyway, now that this code is in the kernel, I'm reassigning to linux. They can check if your quirk has been included in the kernel now. Kiri, unless you have the same LPL monitor as in the original report, you should be filing a separate bug report. ** Package changed: xorg-server (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: Confirmed => New -- DPI not set or incorrectly set to 96 https://bugs.launchpad.net/bugs/201032 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs