https://bugs.freedesktop.org/show_bug.cgi?id=105425

--- Comment #66 from H4nN1baL reizemberk@gmail.com --- Okay, thanks for your reply. Then our problems are unrelated.

Even so let me share you some intel. Disable any BIOS configuration related to "GART" and "PCIE Spread Spectrum"(PCIe overclock). And keep in mind that GPUs also come with a BIOS, in some cases, they really need to be updated.

Good luck.