I can confirm that this was definitely triggered by BIOS in combination with the mentioned patch. BIOS H0ET34WW triggers the problem, an earlier BIOS (from memory H0ET31WW) definitely did not show the problem.
I can confirm that this was definitely triggered by BIOS in combination with the mentioned patch. BIOS H0ET34WW triggers the problem, an earlier BIOS (from memory H0ET31WW) definitely did not show the problem.