VP6650 - USB-C hub not detected

[pkubaj]

Component

Dasharo firmware

Device

Protectli VP6650

Dasharo version

0.9.0rc3

Dasharo Tools Suite version

No response

Brief summary

VP6650 doesn't detect USB-C hub; dmesg and lsusb are indifferent to plugging it in and out.
In consequence, there's no video output, ethernet, nor USB HID over USB-C on VP6650.

How reproducible

Tried with two different hubs

How to reproduce

Try to plug a USB-C hub, notice no changes in dmesg nor lsusb

Expected behavior

The hub should pop up in dmesg and lsusb, ethernet should connect and display output should be sent to monitors connected to the hub

Actual behavior

No observable behavior in reaction to plugging the hub in and out

Screenshots

No response

Additional context

No response

Solutions you've tried

No response

[miczyg1]

I have a VP6650 at hand and USB-C display works for me in firmware and Windows, although I am using Kingston Nucleum USB-C hub with HDMI port connected to a monitor

[macpijan]

Try to plug a display output via USB-C port using VGA or HDMI adapters.

@pkubaj Please provide which models and interfaces failed then, if some works, and some do not.

[pkubaj]

I use a noname USB-C hub. After plugging it to my laptop, the following devices are added:

@@ -13,4 +13,8 @@
 Bus 003 Device 008: ID 0d8c:0014 C-Media Electronics, Inc. Audio Adapter (Unitek Y-247A)
 Bus 003 Device 009: ID 046d:c077 Logitech, Inc. Mouse
 Bus 003 Device 010: ID 050d:004b Belkin Components USB-C 11-in-1 Multiport Dock
+Bus 003 Device 013: ID 2109:2817 VIA Labs, Inc. USB2.0 Hub             
 Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
+Bus 004 Device 008: ID 2109:0817 VIA Labs, Inc. USB3.0 Hub             
+Bus 004 Device 009: ID 067b:2733 Prolific Technology, Inc. USB SD Card Reader     
+Bus 004 Device 010: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153 Gigabit Ethernet Adapter

I believe the problem here is not exactly the lack of video output, however. After plugging the same hub to VP6650, no devices are added, which suggests that the hub is not detected at all.

[miczyg1]

Do you plug it to USB-C SS port? Or the COM USB-C port?

[macpijan]

I use a noname USB-C hub.

For reference: https://web.archive.org/web/20240417102326/https://novacustom.com/product/usb-c-hub/

[pkubaj]

USB-C SS port.

[miczyg1]

I am also using rc3 and I can't reproduce it...

[macpijan]

Can we try VP6670 as well? Maybe it's a problem of this particular unit then that the USB port does not work at all

[mkopec]

you might want to try https://github.com/mkopec/tipd in monitor mode to sniff USB-C Alt mode events, maybe the TPS65994 in the VP6650 is misconfigured

I also recall that an early Clevo NV41MB unit had a misconfigured PD controller and the USB-C just did not work at all, but it started working when I reflashed it with FW dumped from a working unit

[pkubaj]

Same result on VP6670, currently it's plugged in.

[miczyg1]

Maybe a monitor difference then? I don't understand why we have different results.

[macpijan]

I just confirmed yesterday the USB-C hub mentioned here: #792 (comment) was detected on the unit @dawidlesiak is testing with.

[filipleple]

having consulted with @pkubaj, I've updated the scope of the issue - from just the video output (being only a single symptom) to no USB-C hub detection at all

[filipleple]

Turned out to be the same USB3-PCI problem as #823 - resolved by Dasharo/coreboot#499.