Comment # 10 on bug 1177384 from Takashi Iwai

(In reply to Mathias Grewin from comment #9)
> Now the new kernel 5.3.18-lp152.44-default is running, but only it does when
> I set "nomodeset" as a new Kernel Parameter! The resolution is only 1400 *
> 1050 by 77 Hz and there is no other setting possible. So I think, the kernel
> delivers wrong settings (without nomodeset).

The nomodeset option essentially disables the native graphics, hence it's no
wonder that works around the problem but results in the fixed mode.

Did you try the procedure in comment 7, and it still leads to a blank screen?