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...tputsource 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 at 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 at TALABHEIM:~> grep . /sys/class/drm/card*-*/modes /sys/class/drm/card0-eDP-1/modes:*1920x1080*...

> > No, that line is actually expected (just means accel won't work, since > NVIDIA hw now requires signed firmware, but they won't release the > ctxsw fw). Are you absolutely sure that you're seeing the outputs in > xrandr? Could you provide the output of xrandr as well as an Xorg log? > > Thanks, > > -ilia Many thanks for you help. All data below :

...g, 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 at 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 OK. So it sees the monitor, and detects its modes. Can you confirm that these are *not* listed in xrand...