/etc/X11/xorg.conf.d/10-modules.conf -------------------------- Section "Module" Load "glx" EndSection --------------------------- ~/.local/share/xorg/Xorg.o.log --------------------------- [ 19.596] (II) "glx" will be loaded. This was enabled by default and also specified in the config file. [ 19.596] (II) LoadModule: "glx" [ 19.598] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so [ 19.598] (EE) Failed to load /usr/lib/xorg/modules/extensions/libglx.so: /usr/lib/xorg/modules/extensions/libglx.so: cannot open shared object file: No such file or directory [ 19.598] (II) UnloadModule: "glx" [ 19.598] (II) Unloading glx [ 19.598] (EE) Failed to load module "glx" (loader failed, 7) -------------------------------------- gabx@hortensia ➤➤ ~/bin % ls -al /usr/lib/xorg/modules/extensions/libglx.so lrwxrwxrwx 1 root root 11 Jan 12 16:16 /usr/lib/xorg/modules/extensions/libglx.so -> libglx.xorg* gabx@hortensia ➤➤ ~/bin % gabx@hortensia ➤➤ ~/bin % myps Xorg 146:gabx 2010 2009 1 Jan17 tty1 01:57:21 /usr/bin/Xorg.bin -nolisten tcp vt1 I use nouveau driver, start my x session on console with $ xinit Why is libglx.so not seen when it exists indeed ? Thank you for hints