Memmory allocation error! Add: 0xdeadbeef .....

Hi There,

I am running my hackingtosh with Gigabyte GA-Z97X-UD7 on 10.10.1 and it is running just fine (update: but only at 2560x1440). Last week i installed the Dell P2715Q 4K monitor connected to the thunderbolt/minidisplay port and the start up halts at the above error. It starts up fine when i turn the monitor of and runs ok after I turn the monitor on again.

i have read about getting properly working thunderbolt ports by installing and running windows once. Would this solve this issue or does anyone have any idea how to solve this?

Thanks!

Robert

Anybody tried the new Dell P2715Q yet?
i have attached the boot screen error.

Hope someone can help me now.

thanks,
robert