Xfce not Maintaining assigned resolution

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https://bbs.archlinux.org – Hello people,From Thursday and been having a annoying bug with Xfce which is that it does not keep the settings screen resolution placed after a Shutdown / Restart. I mean I set the resolution of my monitor to 1920x1080 and after turning off the computer or restart it, on the next boot resolution 1920x1080 is not maintained but is changed to 1024x768, so that on every boot I set the resolution.I have a Monitor AOC 22 "with native resolution of 1920x1080 and Nvidia graphics card with proprietary driversWhat could be causing this error? Any idea how to fix it?regards jesusangelm ht (HowTos)