https://bugs.freedesktop.org/show_bug.cgi?id=43655
--- Comment #10 from Alexandre Demers alexandre.f.demers@gmail.com 2011-12-16 06:51:47 PST --- (In reply to comment #9)
(In reply to comment #8)
I suspect a bad interaction between Grub and the rest of the initialization process. Does my suspicion make sense?
Quite possibly. Can you test your hypothesis by moving this line between entries?
Tested and confirmed. Whenever I added "set gfxpayload=$linux_gfx_mode", there was a really high chance of hitting this bug (near 90% of the time). Without it, I booted flawlessly.