I have now commented the line GRUB_GFXPAYLOAD_LINUX=1680x1050-24 in /etc/default/grub but the error still appears in /var/log/kern.log. I will attach what-killed-plymouth.log as you suggested.
I have now commented the line GRUB_GFXPAYLOAD _LINUX= 1680x1050- 24 in /etc/default/grub but the error still appears in /var/log/kern.log. I will attach what-killed- plymouth. log as you suggested.