Calibre has been Solid on 1903 (x64 pro) for weeks
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I just would like to find out what is going on with my lower end graphics card (was Nv210, now AMD R5 220). Both reported code 43 and the driver fails to load (at Logon time). At boot (Post to just at Logon), I have 2 monitors displaying . After Enter (logon), I get 1 screen and a driver failed code 43 message. Attempts to install the driver say NO <brand> CARD found (the one working monitor is attached there

. And yes, the driver package installs just fine (finds the card) after removing the Graphics driver and then rebooting. it goes south (again) , after THAT (required) reboot.
BTW Linux Mint live CD uses the 2 Monitors just fine, so I may have binned a working card for nothing
</offtopic>