Hi,

There is an issue with your miner.
The kernel cache created for the
Radeon 280X and Radeon 270X are created for monero with the same name: g9_CNV8_w16_f8_hm1_ha.srb
If you have a system which combines 280X and 270X cards, then you can't use both card, since the kernel generated for one type will fail on the other.

You should generate different kernels for the 280X and 270X. Thank you.