I'm using a lenovo c40-5 with amd A8 and r5 m230, AMD chipset driver (october), the only driver version that can work is 17.4.4.
I tried to install every later version, none worked, then I install 18.12.2 (latest recommended version), after that installing, the screen goes black and I cannot use the pc. Audio, keyboard, and off button works.
If I turn off pc, then I turn on it, the screen goes black with a rainbow line at the center on the screen after boot, nothing works except off button.
I had to force disable principal module for getting a chance to uninstall that version, then install an old 17.4.4 version ... it works.
I think that new features like freesync or overclocking default would be the bug,
why did happen this?, how can I fix?
You need to supply the exact version of your APU....A8 is not enough.
Chances are that computer uses Mobility graphics...but again need to know the exact model number. Here is what Google finds and I don't think it is the same as yours > Lenovo C40-05 - all-in-one - A4 6210 1.8 GHz - 4 GB - 500 GB - LED 21.5" Overview - CNET
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