Comment # 5 on bug 1202950 from Michal Filka

(In reply to Jacobs from comment #4)
> (In reply to Stefan Hundhammer from comment #2)
> > (In reply to Stefan Hundhammer from comment #1)
> > >   sha256 -c -c openSUSE-Leap-15.4*.sha256
> > 
> > Only one "-c", of course:
> > 
> >     sha256 -c openSUSE-Leap-15.4*.sha256
> 
> Hi,
> 
> thanks for your feedback. I tried this but it doesn't work out of the box.
> When I download the x86_64-image it is saved as
> "openSUSE-Leap-15.4-DVD-x86_64-Build243.2-Media.iso" but the checksum file
> looks for "openSUSE-Leap-15.4-DVD-x86_64-Media.iso". So I receive following
> output:
> 
> Data> sha256sum -c openSUSE-Leap-15.4*.sha256
> sha256sum: openSUSE-Leap-15.4-DVD-x86_64-Media.iso: Datei oder Verzeichnis
> nicht gefunden
> openSUSE-Leap-15.4-DVD-x86_64-Media.iso: FEHLSCHLAG ���ffnen oder lesen
> sha256sum: WARNUNG: 1 aufgef���hrte Datei konnte nicht gelesen werden
> 
> I have renamed the iso-image matching to the checksum-file and received an
> OK.
> 
> I burned the image to a DVD using K3B. Reboot the computer, change language
> to German and chose upgrade. But process stops at the same point as before.

well, you still should be able to start the installer in text mode using
textmode=1 as boot parameter when starting installation.

Can you than switch to another console and show us what "hwinfo --gfxcard"
sees?