lsusb -v
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri [Radeon R6/R7 Graphics] (prog-if 00 [VGA controller])
Subsystem: Lenovo Kaveri [Radeon R6/R7 Graphics]
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f0000000 (64-bit, prefetchable) [size=8M]
I/O ports at 2000 [size=256]
Memory at f0a00000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at f0a60000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel modules: radeon