multi-monitor

Hello All, I passed like one week searching to solve my problem of black screen on internal monitor on my laptop, under xfce 4.16/lightdm. the external monitor on DP work fine connected to the nvidia 1660 Ti card, the internal display no chance. I'm on FreeBSD 13 stable, I use the...

I recently installed freebsd (12.2-RELEASE). I'm using an amd graphics card (5500xt with amdgpu module). I know all the monitors are plugged in correctly and work because they all work fine on windows and linux installs. Where do I begin troubleshooting a problem like this? Thank you!

I need help in setting up "true" DPI screen resolution in a multihead setup. With "true" DPI I mean: when I place a printed letter right on top of the surface of the screen, the sizes of the fonts/letters and other items on the monitor are exactly the same as on the letter (so-called DTP...

It doesn't seem like there will be an easy answer to this. Is it possible to change the location of Thunderbird notifications to a chosen screen? Or to at least change the default location of notifications in window managers, JWM specifically? On my setup, I have a large screen TV (over 30")...