Devices show: VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260/M265 / M340/M360 / M440/M445] (rev c1) Subsystem: Dell Topaz XT [Radeon R7 M260/M265 / M340/M360 / M440/M445] Flags: bus master, fast devsel, latency 0, IRQ 129 Kernel driver in use: amdgpu
Settings About shows: Graphics: Intel® UHD Graphics 620 (Kabylake GT2)
Software repository shows: xserver-xorg-video-amdgpu/bionic,now 18.0.1-1 amd64 [installed] libdrm-amdgpu1/bionic,now 2.4.91-2 amd64 [installed]
In my search someone said that if it was using the AMD GPU, it would show on Settings-about.
I also saw that Ubuntu 16 was recently certified for Dell Inspiron 15 5000.
Q1: should Settings-about be showing the AMDGPU ?
Q2: is there a simple test app for graphics
Q3: AMD has an App on Windows 10 to adjust graphic parameters, how about Ubuntu ?