I had exactly the same problem constantly since several years with different Ubuntu versions and different nvidia drivers.
After adding agp=off to the GRUB_CMDLINE_LINUX_DEFAULT in the grub config the strange black dots problem is completely gone! :-)
...maybe this helps someone too.
I had exactly the same problem constantly since several years with different Ubuntu versions and different nvidia drivers.
After adding agp=off to the GRUB_CMDLINE_ LINUX_DEFAULT in the grub config the strange black dots problem is completely gone! :-)
...maybe this helps someone too.