I have tried to use a hub with hdmi port that connects to the USB-C port of my computer but this one doesn't work.
Checking other similar threads on Internet (and here), I see that the problem is probably that the USB-C port in question does not support video output (the hub itself has USB ports and they work properly).
So is there a way to demonstrate it from my PC to stay calm? Ar can I only check it using the manufacturer's documentation?
For more info:
lsusb -t before hub attachment:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 10000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 7: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 2, If 2, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 2, If 3, Class=Video, Driver=uvcvideo, 480M
|__ Port 10: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 10: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
lsusb -t after hub attachment:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 10000M
|__ Port 3: Dev 8, If 0, Class=Hub, Driver=hub/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 7: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 2, If 2, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 2, If 3, Class=Video, Driver=uvcvideo, 480M
|__ Port 8: Dev 41, If 0, Class=Hub, Driver=hub/5p, 480M
|__ Port 10: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 10: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
xrander output before and after hub attachment:
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 310mm x 170m
1920x1080 60.01*+ 59.93
1680x1050 59.95 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
And xrandr after HDMI port monitor attachment:
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 310mm x 170mm
1920x1080 60.01*+ 59.93
1680x1050 59.95 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x 270mm
1920x1080 60.00*+ 50.00 59.94
1680x1050 59.88
1600x900 60.00
1280x1024 60.02
1440x900 59.90
1280x800 59.91
1280x720 60.00 50.00 59.94
1024x768 60.00
800x600 60.32
720x576 50.00
720x480 60.00 59.94
640x480 60.00 59.94
720x400 70.08
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
