nothing flickering , everything is good

 * Xorg errors (grep '^\[.*(EE)' /var/log/Xorg.0.log ~/.local/share/xorg/Xorg.0.log | cut -d ':' -f 2- ):
     [   909.003] (EE) Failed to load module "ati" (module does not exist, 0)
     [   909.009] (EE) Failed to load module "nouveau" (module does not exist, 0)
     [   909.009] (EE) Failed to load module "nv" (module does not exist, 0)
     [   909.009] (EE) Failed to load module "fbdev" (module does not exist, 0)
     [   909.009] (EE) Failed to load module "vesa" (module does not exist, 0) 

Prose: the knowledge and skills needed to search, comprehend, and use continuous texts. Examples include editorials, news stories, brochures, and instructional materials.

Document: the knowledge and skills needed to search, comprehend, and use non-continuous texts in various formats. Examples include job applications, payroll forms, transportation schedules, maps, tables, and drug and food labels.

Quantitative: the knowledge and skills required to identify and perform computations, either alone or sequentially, using numbers embedded in printed materials. Examples include balancing a checkbook, figuring out tips, completing an order form, or determining an amount.