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On Thu, Jun 15, 2023 at 12:20:37PM +0100, Gordon Henderson wrote: > On Thu, 15 Jun 2023, Henry Bremridge wrote: > > > Anyone have bright ideas as to the best way to get the dual monitor to > > work (previous monitor was bought in 2018) > > > When I last did dual monitor stuff under Devuan it sort of "just worked". > Plugged it in and go.. This was on both my desktop when using openshot video > editor and laptop when using libreoffice presenter thing via projector > display. > > I used the arandr program to do the actual setup of positioning the screens > relative to each other (up, down, left or right, mirrored or whatnot). > > In normal use I really didn't want 2 screens, so I wrapped openshot > with an xrandr command to enable it then disable it: > > To enable dual-screen: > > #!/bin/sh > xrandr --output VGA-1 --mode 1920x1080 --pos 0x1080 --rotate normal --output > HDMI-2 --off --output HDMI-1 --mode 1920x1080 --pos 0x0 --rotate normal > --output DP-1 --off --output DP-2 --off > > > and to disable it: > > #!/bin/sh > xrandr --output VGA-1 --off --output HDMI-2 --off --output HDMI-1 --mode > 1920x1080 --pos 0x0 --rotate normal --output DP-1 --off --output DP-2 --off > > These commands were actually generated by arandr - they are in > ~/.screenlayout > > Arandr is a more friendly version of xrandr - or at least interactive. > arandr shows a single monitor... which makes me think it is one of the following - A complete screw up by me - Dell only drives one monitor (I do not think this is the case) but.. - There is a conflict with driving different size screens from different ports (HDMI and Display port). My current thinking is therefore one of the following - get a graphic card so that each monitor has its own graphic card. - Update my old monitor Will try a live CD and see what that does -- Henry Thu 15 Jun 15:45:42 BST 2023 -- The Mailing List for the Devon & Cornwall LUG FAQ: https://www.dcglug.org.uk/faq/