What I did according https://wiki.ubuntu.com/Kernel/KernelBootParameters?_ga=2.33092154.52927536.1661185095-1335890214.1657710128
1. under a terminal : sudo gedit /etc/default/grub 2. insert the parameters as on conversation#25 after the word splash + one space 3. save the file 4. sudo update-grub 5. restart
The "flickering" still occurs !
What I did according https:/ /wiki.ubuntu. com/Kernel/ KernelBootParam eters?_ ga=2.33092154. 52927536. 1661185095- 1335890214. 1657710128
1. under a terminal : sudo gedit /etc/default/grub
2. insert the parameters as on conversation#25 after the word splash + one space
3. save the file
4. sudo update-grub
5. restart
The "flickering" still occurs !