On 7/17/23, Peter Hillier-Brook <p...@hbsys.plus.com> wrote: > I recently upgraded 2 laptops from Bullseye to Bookworm and no longer > have access to my external monitor from one of them. > > My environment consists of a couple of laptops connected to an external > monitor via an HDMI Switch that, until the upgrades, gave excellent > service. The only diagnostic I have is that, from the failing m/c, the > monitor reports that there is no HDMI signal from that computer. > > Any thoughts will be welcomed.
Hi, just in case: what's the output of: $ xrandr , with everything turned on and connected? Kind regards!