I have a 4k monitor connected via DisplayPort and an audio receiver connected via HDMI. The receiver is too old to support 4k, so I can't just pass through video to the display - they need to be connected to the PC separately. The problem is that I can't seem to configure GNOME to treat the receiver as not being another display. Basically there are three options in Settings → Displays:
- "Join Displays", meaning I now have an invisible off-screen trap.
- "Mirror", meaning I have to run the monitor at the much lower max pass-through resolution of the receiver.
- "Single Display" using the 4k monitory, which means the receiver doesn't show up as a sink in PulseAudio.
One possible solution would be if there's some way to join the displays but set the X/Y coordinates the same so that both outputs run at their native resolutions. I believe this used to be possible, but in GNOME 3 the displays repel each other. I've also tried xrandr --output XWAYLAND1 --same-as XWAYLAND0, but that doesn't seem to do anything.
答案1
The workaround mentioned in comments indeed works. With nvidia-settings it pretty easy to do:
- Select audioreceiver screen and click "Advanced" button;
- Type "1x1" ("0x0" is not acceptable by the app) in "ViewPortIn" field and in "Panning" field;
- Click "Apply"
If the nvidia-settings appears offscreen, then press "left arrow" key on the keyboard once, and press "enter" key once. This will confirm video screen changes. You can bring back nvidia-settings to main screen by pressing right click at it on the taskbar.
I haven't yet figured out how to make these changes persistent: restore settings after a restart.
