2) with cairo-dock -c is ok
It confirms that it's a bug with your Intel drivers. It's maybe related to this bug: https://bugs.freedesktop.org/show_bug.cgi?id=55036#c0
(if yes, feel free to confirm it
3) I'm using at login cairo-dock session with effects. How can I "run" cairo-dock -A at startup of this session in manner that I can select no opengl?
Simply launch the dock (version 3.1) with this command (cairo-dock -A
), select 'Remember this choice' and then select 'No'.
3/bis) Running cairo-dock with opengl with optirun (bumblebee) will solve the problem? (now I do a little test...)
Yes but I think it's not a solution because Cairo-Dock doesn't need a lot of GPU resources and you can temporally use it without the OpenGL backend
(if you enable the Nvidia card, your computer will consume more power...)