On Saturday, May 9, 2020 5:23:25 PM CEST test wrote: > Hi, > > I have put a laptop into a docking station and want to use it with an > external monitor (and keyboard and a trackball) when I have it at home. > > The external monitor is connected to the docking station. When I disable > the monitor of the laptop in the KDE system settings, or when the lid is > closed, graphics are unusably slow. When the monitor of the laptop is > enabled, grahpics are at normal speed. > > This is an HP zbook G2 in it's 230W docking station, connected to a monitor > at 1920x1200 pixels, running Fedora. NVIDIA drivers aren't installed --- > do I need them? > > What can do I to use the laptop with the lid closed and it's monitor > disabled without it getting so slow? Is this even a KDE issue? > > > lspci | grep VGA > > 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor > Integrated Graphics Controller (rev 06) > 01:00.0 VGA compatible controller: NVIDIA Corporation GK104GLM [Quadro > K3100M] (rev a1)
I've got it to work. For the record: + enable hybrid graphics in BIOS + disable secure boot in BIOS + install NVIDIA drivers (from RPMFUSION) + make sure nouveau is blacklisted + connect external display to VGA port rather than DVI on docking station I would say "solved" because it works for me. Still I wonder why it's so slow when the internal graphics card is in use with an external monitor; that shouldn't happen.
