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davidshen84
Guru
Joined: 09 Aug 2008
Posts: 321
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 Posted: Sat Nov 11, 2023 9:17 am Post subject: VIA lab hub cannot be detected after boot |
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Hi,
I have these VIA Lab USB hubs on my monitor and a customised kernel.
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Bus 003 Device 002: ID 2109:2817 VIA Labs, Inc. USB2.0 Hub
Bus 003 Device 003: ID 2109:0103 VIA Labs, Inc. USB 2.0 BILLBOARD
Bus 003 Device 004: ID 046d:c548 Logitech, Inc. Logi Bolt Receiver
Bus 003 Device 005: ID 041e:3272 Creative Technology, Ltd Pebble V3
Bus 003 Device 006: ID 2109:8883 VIA Labs, Inc. USB Billboard Device
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The monitor is connected to my Gentoo system using the USB-C port.
If I boot my laptop with the cable connected, the monitor and all the USB peripherals work as expected. If I connect the cable after the system is booted or reconnect the cable, only the monitor will work, but the hub and the peripherals are not detected. There's no kernel message. It is like these devices do not exist.
I compiled the "gentoo-kernel" using the default configuration. After I booted the system with the new kernel, everything worked. I could connect and reconnect the cable as I wished, and all the USB devices worked as normal.
I compared the two kernel configurations, and I think I have enabled all the related USB settings. But my custom kernel won't work.
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David Shen |
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Hu
Administrator
Joined: 06 Mar 2007
Posts: 23100
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| Posted: Sat Nov 11, 2023 4:00 pm Post subject: |
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| How does the dmesg output differ between the working and non-working kernels? Can you pastebin both the good and bad kernels, so that we can review all differences between them? Have you tried incrementally making one kernel more like the other, to determine which configuration option matters? |
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