<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd"> <html><head><meta name="qrichtext" content="1" /><style type="text/css"> p, li { white-space: pre-wrap; } </style></head><body style=" font-family:'Noto Sans'; font-size:10pt; font-weight:400; font-style:normal;"> > > OK, so I think that these are not the HDMI/DP outputs connected to > your secondary device. They are the ones connected to your primary > device (might not be pinned out, or might only be available via an > optional dock). Normally there'd be an extra -1- in the name of such > outputs. But who knows with modesetting - perhaps it doesn't stick > that in and sticks 100% to the kernel names. > > Have a look at https://nouveau.freedesktop.org/wiki/Optimus/ for some > details on how to set up output offloading. The short version is that > you want to do something like > > xrandr --setprovideroutputsource 1 0 > > If that doesn't help, grab the output of > > grep . /sys/class/drm/card*-*/status > grep . /sys/class/drm/card*-*/modes > > preferably while something is plugged into one of your NVIDIA-attached > connectors. When X first starts, it appears to get an EDID just fine > for your secondary GPU's DP-1 output... > > Cheers, > > -ilia > Thanks Ilia; I already checked the wiki page, with no success so far. xrandr --setprovideroutputsource 1 0 seems to do nothing, either with a monitor connected to HDMI-1 or not. The second monitor is detected and available in the screen configuration tool of KDE, but it remains black, no window, nothing. With a monitor conected in HDMI-1, here are the results of the commands : sigmar@TALABHEIM:~> grep . /sys/class/drm/card*-*/status /sys/class/drm/card0-eDP-1/status:connected /sys/class/drm/card1-DP-1/status:disconnected /sys/class/drm/card1-HDMI-A-1/status:connected sigmar@TALABHEIM:~> grep . /sys/class/drm/card*-*/modes /sys/class/drm/card0-eDP-1/modes:1920x1080 /sys/class/drm/card0-eDP-1/modes:1920x1080 /sys/class/drm/card1-HDMI-A-1/modes:1920x1080 /sys/class/drm/card1-HDMI-A-1/modes:1920x1080 /sys/class/drm/card1-HDMI-A-1/modes:1920x1080 /sys/class/drm/card1-HDMI-A-1/modes:1920x1080i /sys/class/drm/card1-HDMI-A-1/modes:1920x1080i /sys/class/drm/card1-HDMI-A-1/modes:1920x1080 /sys/class/drm/card1-HDMI-A-1/modes:1920x1080i /sys/class/drm/card1-HDMI-A-1/modes:1600x1200 /sys/class/drm/card1-HDMI-A-1/modes:1680x1050 /sys/class/drm/card1-HDMI-A-1/modes:1280x1024 /sys/class/drm/card1-HDMI-A-1/modes:1280x1024 /sys/class/drm/card1-HDMI-A-1/modes:1440x900 /sys/class/drm/card1-HDMI-A-1/modes:1280x960 /sys/class/drm/card1-HDMI-A-1/modes:1366x768 /sys/class/drm/card1-HDMI-A-1/modes:1152x864 /sys/class/drm/card1-HDMI-A-1/modes:1280x720 /sys/class/drm/card1-HDMI-A-1/modes:1280x720 /sys/class/drm/card1-HDMI-A-1/modes:1280x720 /sys/class/drm/card1-HDMI-A-1/modes:1024x768 /sys/class/drm/card1-HDMI-A-1/modes:1024x768 /sys/class/drm/card1-HDMI-A-1/modes:1024x768 /sys/class/drm/card1-HDMI-A-1/modes:832x624 /sys/class/drm/card1-HDMI-A-1/modes:800x600 /sys/class/drm/card1-HDMI-A-1/modes:800x600 /sys/class/drm/card1-HDMI-A-1/modes:800x600 /sys/class/drm/card1-HDMI-A-1/modes:800x600 /sys/class/drm/card1-HDMI-A-1/modes:720x576 /sys/class/drm/card1-HDMI-A-1/modes:720x480 /sys/class/drm/card1-HDMI-A-1/modes:720x480 /sys/class/drm/card1-HDMI-A-1/modes:640x480 /sys/class/drm/card1-HDMI-A-1/modes:640x480 /sys/class/drm/card1-HDMI-A-1/modes:640x480 /sys/class/drm/card1-HDMI-A-1/modes:640x480 /sys/class/drm/card1-HDMI-A-1/modes:640x480 /sys/class/drm/card1-HDMI-A-1/modes:720x400 Any hints really appreciated, Regards, Sylvain </body></html>