Boot paramers
More precisely the parameter I am looking for is a cheatcode and is used like a boot parameter, for example "from=", see https://www.slax.org/blog/18824-Rei…tcode-from.html . I prefer dual boot in stead of booting from another hard disk of pen drive. This is more a topic for "feature requests", but it should streamline the process in my case (BIOS is sometimes not very responsive).
EGL
I don't know if is a bug. Slackware 15.0 is using version 21.3.5 without problems. They have patched mesa, but I don't think for EGL, see https://ftp.nluug.nl/os/Linux/distr…/source/x/mesa/ Kodi runs fine with gbm/gl
Images
40 minutes from scratch per image is very fast. Rebuilding without changes should take about 10 minutes for me. The results from your images:
Nouveau (gbm/gles):
pastekodi: https://paste.libreelec.tv/singular-civet.log
pastecrash: https://paste.libreelec.tv/aware-catfish.log
kodi_crashllog: https://paste.kodi.tv/eqehowusip.kodi
Nouveau-legacy (x11/gl):
pastekodi: https://paste.libreelec.tv/steady-doberman.log
systemctl status xorg.service and journalctl -xeu xorg.service: https://paste.kodi.tv/podibezacu
BTW I could not upgrade from Nouveau to Nouveau-legacy via .update It gave an error about not being compatible. I upgraded manually by coping the KERNEL and SYSTEM files.
EDIT I tried gbm/gl and therfore I changed the file /$HOME/LibreELEC.tv/projects/Generic/devices/gbm/options:
OPENGL="mesa", OPENGLES="no" and GRAPHIC_DRIVERS="nouveau"
During building I got the error ../meson.build:448:3: ERROR: Feature egl cannot be enabled: EGL requires DRI, Haiku, Windows or Android