Re: F42/Xfce - KVM monitor not waking up

On Tue, 2026-08-04 at 21:49 -0400, Robert Moskowitz wrote:
> Cont/Alt/F2 followed by Cont/Alt/F1 key strokes does not wake up the 
> display.
> 
> even tried typing into the F2 console before switching back.
> 
> drats.
> 
> I probably do need a more modern, real HDMI monitor.
> 
> I also need a KVM with a hot key feature.  I am going to comment about 
> this on Amazon.
> 
> On 8/4/26 12:16 PM, ja wrote:
> > On Tue, 2026-08-04 at 11:41 -0400, Robert Moskowitz via users wrote:
> > >   
> > >   
> > >   
> > > On 8/4/26 12:45 AM, Javier Perez wrote:
> > >   
> > >   
> > > >    
> > > > 
> > > >   
> > > >   
> > > > On Sat, Aug 1, 2026 at 2:06 AM Tim via users <[email protected]> wrote:
> > > >   
> > > >   
> > > > > Robert Moskowitz:
> > > > >   > > If I am away from my system, and it turns off the monitor, the KVM
> > > > >   > > monitor does not wake up on activating the notebook.
> > > > >   > >
> > > > >   > > ...[snip more about how it works for Windows but not for Fedora]...
> > > > >   
> > > > >   Tim:
> > > > >   > As a very basic thing:  Have you swapped monitor HDMI video cables?
> > > > >   >
> > > > >   > A bad cable, or damaged socket on a monitor, *could* be a problem for
> > > > >   > monitor wake-up, monitor detection, mode selection, etc.
> > > > >   
> > > > >   And apparently some cables fail at HDMI v2 but are fine with HDMI v1.
> > > > >   
> > > > >   Another point:  Does your monitor have multiple inputs and auto input
> > > > >   scanning?
> > > > >   
> > > > >   Two of mine do (both different), and with loss of signal they go
> > > > >   scanning through all inputs once or twice, and *park* themselves at the
> > > > >   last input.  If, later on, input 1 comes to life, it never notices it.
> > > > >   Unfortunately I can't connect the PC to the last input, it's the wrong
> > > > >   type of video signal.  It's also next to impossible to get the monitor
> > > > >   to switch on for you to manually change inputs when it's in that state.
> > > > >   So I switched off input hunting.
> > > > >   
> > > > >   --
> > > > >   
> > > > I used to have a KVM without it and it was a lot of additional steps I had to make each time I
> > > > switch systems.
> > > >   
> > > > My current one has it and it is a blessing, because the KVM lies to each connected system
> > > > telling
> > > > them that the monitor is still connected.
> > > >   
> > > > Maybe that would help you out
> > > >   
> > > > 
> > > >   
> > > >   
> > > > 
> > >   
> > >   
> > 
> > I've not been following this thread very closely but I have found on my KVM switch & F44/XFCE4 the
> > following works - Worth a go.
> > 
> > Ensure that  "cntrl/alt/fx" is available - as
> > root												
> > 		
> > systemctl enable --now [email protected]
> > 
> > Then use Cont/Alt/F2 followed by Cont/Alt/F1 key strokes to wake up the display
> > 

Sorry that did not do the job.

For info I am using a Display Port switch not an HDMI - conscious decision.
gofanco KVMDP-4P
Switching between a Rocky Linux 9 server (Intel NUC) and three Fedora 44 XFCE boxes
BeeLink GTR7 Pro, Minisforum  UM790 Pro, Bosgame M5

The need for the Cont/Alt/F2 & F1 on the M5 has only been necessary recently.
-- 
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