Please provide details of “problem”, and output of this command run from Konsole:
which tells us which X driver(s) is/are in use and the PCI device ID(s) of the gfx devices. Standard repos include inxi (in case it is not already installed). Also upload Xorg.0.log where we can see it. You can use susepaste to upload.
inxi and Xorg.0.log both report you are using the xf86-video-ati driver. I think your 1002:6647 is supposed to use the xf86-video-amdgpu driver, which won’t be used if not installed. If it is installed, maybe you need to remove xf86-video-ati to have it automagically used instead. Check and see if 1002:6647 is included in /etc/X11/xorg_pci_ids/modesetting.ids. If it is, remove it. If it is not, add it, then restart X. If that doesn’t work either, you may need to try to force amdgpu via /etc/X11/xorg.conf.d/50-device.conf. Another possibility is removing both xf86-video-amdgpu and xf86-video-ati, which should result in automagic use of the modesetting driver.
The main thing is that you have to update your OS as soon as possible because the issue you are saying requires the upgradation of the OS. If there is Win 10 then you need to update the bios and also the graphics card settings. Dell bios update Windows 10will suggest that if the Windows version is 7 or 8 then it has to be updated and if the Win version is old than that, then the issue will not be solved.