Does Linux support this? I am trying to connect my laptop to a monitor via USB C. The laptop has two Thunderbolt ports and the monitor has support for USB C DP alt mode. I have tested the same setup on my work laptop (windows 11) and it works fine but my laptop running arch does not work. My laptop detects the monitor correctly so it shows up in the KDE plasma display configuration but the monitor is not getting any input. As far as I could tell this is supported in the kernel. Am I wrong? Am I missing some important package?

    • Cralder@lemmy.worldOPEnglish
      0·
      21 days ago
      [  930.571238] usb 3-4: new high-speed USB device number 21 using xhci_hcd
[  930.706640] usb 3-4: New USB device found, idVendor=2109, idProduct=2817, bcdDevice= 7.74
[  930.706652] usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  930.706655] usb 3-4: Product: USB2.0 Hub             
[  930.706658] usb 3-4: Manufacturer: VIA Labs, Inc.         
[  930.706661] usb 3-4: SerialNumber: 000000000
[  930.709490] hub 3-4:1.0: USB hub found
[  930.709697] hub 3-4:1.0: 5 ports detected
[  931.438189] usb 3-4.4: new high-speed USB device number 22 using xhci_hcd
[  931.583868] usb 3-4.4: New USB device found, idVendor=2109, idProduct=2211, bcdDevice= 5.84
[  931.583877] usb 3-4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[  931.583879] usb 3-4.4: Product: USB2.0 Hub             
[  931.583881] usb 3-4.4: Manufacturer: VIA Labs, Inc.         
[  931.585386] hub 3-4.4:1.0: USB hub found
[  931.585580] hub 3-4.4:1.0: 4 ports detected
[  932.100980] usb 3-4.5: new high-speed USB device number 23 using xhci_hcd
[  932.183614] usb 3-4.5: New USB device found, idVendor=2109, idProduct=8884, bcdDevice= 0.01
[  932.183624] usb 3-4.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  932.183626] usb 3-4.5: Product: USB Billboard Device   
[  932.183629] usb 3-4.5: Manufacturer: VIA Labs, Inc.         
[  932.183630] usb 3-4.5: SerialNumber: 0000000000000001
[  932.634461] usb 3-4.4.1: new full-speed USB device number 24 using xhci_hcd
[  932.830091] usb 3-4.4.1: New USB device found, idVendor=1038, idProduct=12ad, bcdDevice= 1.19
[  932.830109] usb 3-4.4.1: New USB device strings: Mfr=4, Product=5, SerialNumber=0
[  932.830115] usb 3-4.4.1: Product: SteelSeries Arctis 7
[  932.830120] usb 3-4.4.1: Manufacturer: SteelSeries 
[  933.230162] input: SteelSeries  SteelSeries Arctis 7 Consumer Control as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.4/3-4.4.1/3-4.4.1:1.5/0003:1038:12AD.0004/input/input17
[  933.281660] input: SteelSeries  SteelSeries Arctis 7 as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.4/3-4.4.1/3-4.4.1:1.5/0003:1038:12AD.0004/input/input19
[  933.282589] hid-generic 0003:1038:12AD.0004: input,hiddev96,hidraw1: USB HID v1.11 Device [SteelSeries  SteelSeries Arctis 7] on usb-0000:00:14.0-4.4.1/input5
[  933.411058] usb 3-4.4.2: new full-speed USB device number 25 using xhci_hcd
[  933.545758] usb 3-4.4.2: New USB device found, idVendor=0cf2, idProduct=b201, bcdDevice= 1.00
[  933.545764] usb 3-4.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  933.545766] usb 3-4.4.2: Product: 6K7732
[  933.545767] usb 3-4.4.2: Manufacturer: ENE
[  933.545768] usb 3-4.4.2: SerialNumber: 6243168002
[  933.551282] hid-generic 0003:0CF2:B201.0005: hiddev97,hidraw2: USB HID v1.11 Device [ENE 6K7732] on usb-0000:00:14.0-4.4.2/input1
  • Zamundaaa@discuss.tchncs.deEnglish
    0·
    23 days ago

    My laptop detects the monitor correctly so it shows up in the KDE plasma display configuration but the monitor is not getting any input.

    So the system thinks it’s enabled? Can you move the mouse cursor to it?

      • Zamundaaa@discuss.tchncs.deEnglish
        0·
        17 days ago

        No I can’t move my mouse to the external monitor.

        Do you mean that it stays on the internal display, or that it doesn’t show up on the external one?

        Or to ask it differently, can you move a window where the monitor should be?

  • rodbiren@midwest.socialEnglish
    0·
    21 days ago

    It has to do with muxing for the dGPU. I have bashed my head against this what seems like endlessly. My suggestion is that you should enable only dedicated gpu mode in your bios. That has worked for me. It kind of sucks because you feel like you are leaving performance on the table, but I have found nothing that works properly on any DE in any configuration.

    At the end of the day it is basically a hardware issue, and for your specific hardware it will not work. I’m my limited opinion.