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So, all of a sudden, when I plugged in my Thinkpad X1 through USB-C, the Dell monitor was not detecting any USB-C signal. All the peripherals like Webcam and Ethernet dongle connected through the monitor work except the video. I haven't rebooted the thing in a while (until today), so I tried to at least roll back all packages to 12-10-2022 (I did a system update today, so I thought this caused it) - but it did not help. Any ideas? I am using an Intel iGPU - what else might I try to roll back to a further date? I even tried the LTS kernel.
I tried HDMI, and that works. Power also gets delivered via USB-C from the monitor.
I also connected the monitor to a friend's Mac, USB-C works as expected.
Output from dmesg -w when I plug in the monitor
[ 758.472064] usb 3-6: new high-speed USB device number 25 using xhci_hcd
[ 758.893287] usb 3-6: New USB device found, idVendor=413c, idProduct=8442, bcdDevice= 1.00
[ 758.893297] usb 3-6: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[ 758.893300] usb 3-6: SerialNumber: F602085965C3
[ 758.895307] hub 3-6:1.0: USB hub found
[ 758.895423] hub 3-6:1.0: 6 ports detected
[ 759.175252] usb 3-6.1: new high-speed USB device number 26 using xhci_hcd
[ 761.422516] audit: type=1131 audit(1665870743.673:188): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=NetworkManager-dispatcher comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 761.542254] usb 3-6.1: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11
[ 761.542265] usb 3-6.1: New USB device strings: Mfr=0, Product=2, SerialNumber=1
[ 761.542268] usb 3-6.1: Product: HD Pro Webcam C920
[ 761.542271] usb 3-6.1: SerialNumber: 8EC83F4F
[ 761.543741] usb 3-6.1: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d)
[ 761.546893] input: HD Pro Webcam C920 as /devices/pci0000:00/0000:00:14.0/usb3/3-6/3-6.1/3-6.1:1.0/input/input30
[ 761.978665] usb 3-6.2: new high-speed USB device number 27 using xhci_hcd
[ 762.070611] usb 3-6.2: New USB device found, idVendor=0bda, idProduct=8153, bcdDevice=30.00
[ 762.070620] usb 3-6.2: New USB device strings: Mfr=1, Product=2, SerialNumber=6
[ 762.070623] usb 3-6.2: Product: USB 10/100/1000 LAN
[ 762.070625] usb 3-6.2: Manufacturer: Realtek
[ 762.070627] usb 3-6.2: SerialNumber: 000001
[ 762.148693] usb 3-6.5: new high-speed USB device number 28 using xhci_hcd
[ 762.242826] usb 3-6.5: New USB device found, idVendor=0451, idProduct=82ff, bcdDevice= 2.00
[ 762.242837] usb 3-6.5: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 762.247279] hid-generic 0003:0451:82FF.0008: hiddev96,hidraw0: USB HID v1.11 Device [HID 0451:82ff] on usb-0000:00:14.0-6.5/input0
[ 762.315737] usb 3-6.2: reset high-speed USB device number 27 using xhci_hcd
[ 762.435552] r8152 3-6.2:1.0: load rtl8153a-4 v2 02/07/20 successfully
[ 762.465793] r8152 3-6.2:1.0 eth0: v1.12.13
[ 763.014581] r8152 3-6.2:1.0 enp0s20f0u6u2: renamed from eth0
[ 765.922017] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s20f0u6u2: link becomes ready
[ 765.922317] r8152 3-6.2:1.0 enp0s20f0u6u2: carrier on
[ 771.163480] audit: type=1130 audit(1665870753.413:189): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=NetworkManager-dispatcher comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Last edited by Icoo (2022-10-16 08:35:48)
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Update, after searching all over for a solution I found this article: https://www.windowscentral.com/lots-len … theres-fix
Quote: "Lenovo says that you may experience issues after six to 12 months of "typical usage." referring to the USB-C port, which is exactly my timeline
So I did an update of every firmware available for update via the fantastic fwupd ( https://wiki.archlinux.org/title/fwupd ).
Works like a charm again after that.
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