Re: Lost HDMI monitor connection

[Peter Hillier-Brook <phb@hbsys.plus.com>]

On 17/07/2023 20:29, riveravaldez wrote:
> On 7/17/23, Peter Hillier-Brook <phb@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?

Interesting thought, but no answer. The only output is the internal 
monitor and a disconnected VGA port. HDMI is missing in action.

As it was working until the reboot into Bookworm, I think the 
possibility of a hardware failure at that precise instant is somewhat 
remote, but...

My next step is to find a Live, pre-Bookworm CD and see what happens. 
The reason I posted here was to establish if anyone else has encountered 
this issue and found a solution.

Peter HB