Created attachment 8761 Screenshot I have a notebook with an external monitor connected. The external monitor is my main monitor ("BenQ"), and should be the primary monitor for Xfce. The notebook monitor ("Laptop") is left of it. When I configure the displays in Xfce Display Settings like that (BenQ right of Laptop, BenQ primary), the panel appears on Laptop (see Screenshot). Only if I put BenQ left off Laptop, the panel is shown on the BenQ monitor. $ xrandr --listmonitors Monitors: 2 0: +*DP-1 1920/477x1080/268+1280+0 DP-1 1: +eDP-1 1280/309x720/175+0+0 eDP-1 I will also attach ~/.config/xfce4/xfconf/xfce-perchannel-xml/displays.xml (Note in displays.xml, there's the test1 profile, which I cannot get rid of. I already deleted the displays.xml while xfce4 was not running, but it's coming again. Also the test1-profile should be monitor-wise identical to the default profile, but it is not shown in the profiles list of the display settings. Where is it coming from?) I'm on Xubuntu 18.04 with Xubuntu Staging PPA enabled.
Created attachment 8762 displays.xml
That optional for the panel in xfce, it can be assigned either to a specific monitor or the primary monitor,. Is you panel set to be on the primary monitor? FWIW it works for me.
I do not have that option, xfce4-panel is still v4.12. Maybe it's too old (xfce4-panel is not included in the Xubuntu Staging PPA). But I could just move the panel to my main monitor. Now it works for me, too. Thanks!
Support for the primary monitor option was added in xfce4-panel 4.13.0.