Pi5, trixie, wayland continued

[Bill E]

I've finally given up on wayland, just too many issues. The final one is that wayland can't support dual monitors via vnc in any reasonable way. X11 does it just fine. As an added benefit, t30dpy performs dramatically better under x11 with cpu usage running snowflake dropping to 14%. I just don't understand why wayland/labwc has gotten so much traction  given all the problems.

Anyway, yes, I have dual monitors on the pi. One is the primary, the little lcd panel I mounted on the pidp 'tape' panel, one the external Type 30 display replica.

If you're having annoying issues or just want the best performance, consider switching.

Bill

[Carlo Valpiani]

YMMV

X11 with a single 1024x600 monitor doesn't play nicely. Dual monitors works well. Seeing as I normally run with the just the one (small) monitor, it's back to Wayland.

Carlo

[Bill E]

What symptom are you seeing with x11 and a single monitor?

Bill

[Carlo Valpiani]

It's a combination of lack of knowledge (on my part) and how I've setup the display panel. I have physically obscured the edges of the panel so that only the Type 30 window is visible when running. I rely on SSH and VNC to manage the pi. Changing to X11 does 2 things. 

Firstly when the t30dpy window opens it is not centred so doesn't show properly on my physical configuration. Wayland will centre the window. Starting borderless also means I can't move it. 

Secondly, X11 seems to break VNC such that I get a grey screen on the VNC client. I then need to SSH into the pi, run raspi-config, turn on VNC again before it works as advertised. This wouldn't be a problem except it happens every time I reboot the pi.

Not really a pidp-1 problem, just takes me away from playing :)

Carlo

[Bill E]

The window-centering is an artifact of the fiddling I did for wayland. X11 lets an app specify initial window location, wayland doesn't, it centers the window. I'll put back the x11 'open centered' flags for SDL.

The broken vnc is yet another known problem with trixie. When you switch from wayland to x11, it doesn't properly reset everything and you end up with an x11 backend and a wayland vnc server. There are some hoops you can jump thru to fix that, do a web search and apply the usual garbage features. Instructions that cover disabling the wayland vnc and starting thex11 realvnc server is what you want.

But, other than the x11 version properly using the gpu, no reason to switch. The difference will be t30dpy using <20% of the cpu under x11 or 80%+ under wayland, but still not bad.

Bill

[Bill E]

t30dpy and t30dpy3 now center the window in x11 again.

Bill