I have the following lspci -nn
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b)
...
09:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260/M265 / M340/M360] [1002:6900] (rev ff)
How can I make sure to use the R7 with radeon drivers on 16.04?
Thanks!
This is expected, given it's a hybrid solution. One has to use
DRI_PPRIME=1 <command>
to use it.