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@sigmaris
Created January 24, 2026 21:05
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RockPro64 USB-C DisplayPort hotplug
(cable unplugged here)
[ 222.646155] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] Connected with sink; re-train link
[ 222.936041] cdn-dp fec00000.dp: [drm:cdn_dp_get_edid_block] *ERROR* get block[0] edid failed: -22
[ 222.938473] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] Connected, not enabled; enabling cdn
[ 228.139363] cdn-dp fec00000.dp: [drm:cdn_dp_check_sink_connection] *ERROR* Get sink capability timed out
[ 228.140417] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] *ERROR* Enabling dp failed: -19
[ 233.331355] cdn-dp fec00000.dp: [drm:cdn_dp_check_sink_connection] *ERROR* Get sink capability timed out
[ 233.332437] cdn-dp fec00000.dp: [drm:cdn_dp_bridge_atomic_enable] *ERROR* Failed to enable bridge -19
[ 233.341035] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] Not connected; disabling cdn
[ 233.353874] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] Not connected; disabling cdn
[ 233.357610] xhci-hcd xhci-hcd.9.auto: remove, state 4
[ 233.366586] usb usb7: USB disconnect, device number 1
[ 233.370554] xhci-hcd xhci-hcd.9.auto: USB bus 7 deregistered
(cable re-plugged here, but no DP display detected/output)
[ 246.988489] xhci-hcd xhci-hcd.9.auto: xHCI Host Controller
[ 246.994338] xhci-hcd xhci-hcd.9.auto: new USB bus registered, assigned bus number 7
[ 246.998086] xhci-hcd xhci-hcd.9.auto: USB3 root hub has no ports
[ 247.001285] xhci-hcd xhci-hcd.9.auto: hcc params 0x0220fe64 hci version 0x110 quirks 0x0000808002000010
[ 247.005198] xhci-hcd xhci-hcd.9.auto: irq 45, io mem 0xfe800000
[ 247.009223] usb usb7: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.19
[ 247.013472] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 247.017206] usb usb7: Product: xHCI Host Controller
[ 247.020463] usb usb7: Manufacturer: Linux 6.19.0-rc6-rockchip-00051-g630c4ea5881c xhci-hcd
[ 247.023824] usb usb7: SerialNumber: xhci-hcd.9.auto
[ 247.027700] hub 7-0:1.0: USB hub found
[ 247.035128] hub 7-0:1.0: 1 port detected
[ 247.591949] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] Not connected; disabling cdn
[ 247.605262] xhci-hcd xhci-hcd.9.auto: remove, state 4
[ 247.609048] usb usb7: USB disconnect, device number 1
[ 247.615551] xhci-hcd xhci-hcd.9.auto: USB bus 7 deregistered
[ 248.056827] xhci-hcd xhci-hcd.9.auto: xHCI Host Controller
[ 248.061292] xhci-hcd xhci-hcd.9.auto: new USB bus registered, assigned bus number 7
[ 248.066109] xhci-hcd xhci-hcd.9.auto: USB3 root hub has no ports
[ 248.070571] xhci-hcd xhci-hcd.9.auto: hcc params 0x0220fe64 hci version 0x110 quirks 0x0000808002000010
[ 248.075327] xhci-hcd xhci-hcd.9.auto: irq 45, io mem 0xfe800000
[ 248.080171] usb usb7: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.19
[ 248.084833] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 248.089341] usb usb7: Product: xHCI Host Controller
[ 248.092846] usb usb7: Manufacturer: Linux 6.19.0-rc6-rockchip-00051-g630c4ea5881c xhci-hcd
[ 248.096575] usb usb7: SerialNumber: xhci-hcd.9.auto
[ 248.101233] hub 7-0:1.0: USB hub found
[ 248.110445] hub 7-0:1.0: 1 port detected
[ 248.383667] xhci-hcd xhci-hcd.9.auto: remove, state 4
[ 248.386262] usb usb7: USB dis[ 248.391452] xhci-hcd xhci-hcd.9.auto: USB bus 7 deregistered
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