That seemed to work to get it listed under xrandr --listproviders However, screen didn't turn green as it did last time or seem to show anything (it doesn't display when windows are pulled onto its monitor, just black). The difference between this time and last time is it looks like the EDID had some kind of issue.
DMESG output: [ 184.665690] usb 4-1.3: new high-speed USB device number 3 using ehci-pci [ 189.740917] usb 4-1.3: device descriptor read/64, error 64 [ 189.932497] usb 4-1.3: New USB device found, idVendor=17e9, idProduct=410d [ 189.932505] usb 4-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 189.932510] usb 4-1.3: Product: Sabrent USB-HRHD [ 189.932513] usb 4-1.3: Manufacturer: DisplayLink [ 189.932517] usb 4-1.3: SerialNumber: 451531 [ 189.981218] [drm] vendor descriptor length:2e data:2e 5f 01 00 2c 00 04 04 01 00 03 [ 190.056338] udl 4-1.3:1.0: fb1: udldrmfb frame buffer device [ 190.056347] udl 4-1.3:1.0: registered panic notifier [ 190.056355] [drm] Initialized udl 0.0.1 20120220 on minor 1 [ 190.056470] usbcore: registered new interface driver udl [ 190.059662] usbcore: registered new interface driver snd-usb-audio [ 391.390942] Raw EDID: [ 391.390965] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.390975] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.390978] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.390981] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.390983] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.390986] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.390989] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.390992] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 391.391001] udl 4-1.3:1.0: DVI-I-1: EDID invalid. [ 391.661579] udl 4-1.3:1.0: swiotlb buffer is full (sz: 1982464 bytes) [ 391.661583] DMA: Out of SW-IOMMU space for 1982464 bytes at device 4-1.3:1.0 [ 391.663115] [drm] write mode info 153 Nothing showing in the Xorg.0.log after the hotplug took place. xrandr --current looks a lot different than last time as well when it was "kinda" working. bash-4.3$ xrandr --current Screen 0: minimum 8 x 8, current 4864 x 1080, maximum 8192 x 8192 VGA-0 disconnected primary (normal left inverted right x axis y axis) LVDS-0 connected 1920x1080+2944+0 (normal left inverted right x axis y axis) 344mm x 193mm 1920x1080 60.04*+ DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) DP-4 disconnected (normal left inverted right x axis y axis) DP-5 disconnected (normal left inverted right x axis y axis) DP-6 connected 1920x1080+1024+0 (normal left inverted right x axis y axis) 527mm x 296mm 1920x1080 60.00*+ 59.94 50.00 60.05 60.00 50.04 1600x1200 60.00 1600x900 60.00 1280x1024 75.02 60.02 1280x720 60.00 59.94 50.00 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 720x576 50.00 50.08 720x480 59.94 60.05 640x480 75.00 59.94 59.93 DVI-1-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.00* 800x600 60.32 848x480 60.00 640x480 59.94 1024x768 (0x295) 65.000MHz h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz v: height 768 start 771 end 777 total 806 clock 60.00Hz 800x600 (0x297) 40.000MHz h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz v: height 600 start 601 end 605 total 628 clock 60.32Hz CAL
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