Re: Problems after replacing an ati videocard by a nvidia card (F20, both 512 MB memory)

On 07.07.2014 12:11, Joachim Backes wrote: > Problem description: replacing my ati video card (DVI) by a nvidia card > (DVI too) generates problems: almost unreadable (flickering) screen > during boot after some boot progress (even without rhgb), no gdm login > screen. > > The primary F20 system was installed with the ati card. > > Running "dracut --force" was no solution. > > After investigating a little bit I saw that the grub boot-parameter > "video=1280x1024-24" was the culprit: replacing "video=1280x1024-24" by > "video=DVI-D:1280x1024-24". > > Both the ati card and the nvidia card have a DVI connector. > > So I can't explain this weird effect. Anybody has an explanation? > > Kind regards > > Joachim Backes > Was ist die ausgabe dieses befehls $ ll /sys/class/drm/ BTW why are you using 'video=' directive?