wayland rustdesk hdmi headless

rustdesk server

• Place the dongle centre and the actual screen as shown.
• Right click -> Display Configuration
• Enable ONLY the dongle is activated AND primary (but remember that as soon as the real screen is deactivated you'll not be able to see anything)
• Remove the real screen cable
• Reboot via SSH

Or make things easier; configure using a second screen, KB and Mouse.

kstars build nou

method here: 

https://gitea.nouspiro.space/nou/astro-soft-build

Kubuntu 26.04 kstars build fails with missing:

lwpintrin.h

which is evidently not included in build-essential.
Fix:
sudo apt install gcc-multilib


Not forgetting a big callout to NOU for making ths excellent source install script.

sddm autologin

To stop auto login at the command line:

sudo rm /etc/sddm.conf.d/kde_settings.conf
sudo reboot

Then start again.

pip cache purge

WARNING: Cache entry deserialization failed, entry ignored

Activate the venv:
. venv/bin/activate

then purge the cache
pip cache purge

rethinks under xeon fun

 The Xeon making light weight of a few reprocesses...

m33

m45

m71

ngc281

ngc7380

sh2-155

sh2-190 + melotte 15

gimp x11 session

 The Wayland session does not save window positions on exit, so grudgingly we edit:

/usr/share/applications/gimp.desktop

and change the Exec= line to:

Exec=GDK_BACKEND=x11 gimp-3.2 %U

kubuntu 26.04

Upgrade from 25.10 

sudo do-release-upgrade -d

and 20 minutes later...