I have recently installed Ubuntu 14.04 in my Lenovo Z51-70. It has both integrated Intel HD5500 graphics and AMD Radeon graphics card. But when I run the command "lshw -c video", its showing only Intel graphics. How can I switch to AMD graphics?
Output of lspci -k | grep -EA2 'VGA|Display' is
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) Subsystem: Lenovo Device 3824 Kernel driver in use: i915 -- 04:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Venus XTX [Radeon HD 8890M / R9 M275X/M375X] (rev 81) Subsystem: Lenovo Radeon R9 M375 Kernel driver in use: fglrx_pci