I have an issue with mounting a cheap smart watch in #linux: Device is seen by the kernel, but never registered as a storage device /dev/sd*:

[root42@chaos.social]

Nope, that was not it. I downgraded to Linux 6.14.0-37, but USB still doesn't work. So it must be something with my installation! But what?

[cibersheep@mastodont.cat]

@root42 I still have some problemas mounting usb from friends in Ubuntu Focal. Can you believe that?
May it be a permissions issue?

[root42@chaos.social]

I am onto something: Attaching an OLD Apple keyboard with a USB-C to A adapter WORKS. But all my USB3.x devices do NOT work!
So how do I tell the USB controller to also work with USB3 devices...? Which works on the live thumbdrive!

[1024bytes@masto.ai]

@root42 it sounds like it does not load some usb drivers. But for default usb never seen that happen.

[root42@chaos.social]

Yes, so it seems the controller is stuck in EHCI mode, instead of switching to xHCI for USB3 devices. Bummer... how to switch it back...?

[dr_laemmerbein@mastodon.social]

@root42 Did you install a kernel update by any chance? Then you might need a reboot to make it work again, I ran into that a few times...

[zyx@social.treehouse.systems]

@root42 I also had this problem once where the kernel showed the usb drive was plugged in but no /dev/sd* showed up, the problem was the usb kernel modules weren't loaded so 'modeprobe usb' or a similar modeprobe command to that fixed it

[sebastiaanfranken@mastodon.nl]

@root42 Is your USB controller properly listed in `lspci`? And if it is, what kernel options does it use (see with `lspci -s <address of controller> -k`. For example, here's mine:

04:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
Subsystem: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci

[root42@chaos.social]

@dr_laemmerbein lots of reboots...

[root42@chaos.social]

@sebastiaanfranken Seems so:

07:00.0 USB controller: Intel Corporation JHL6540 Thunderbolt 3 USB Controller (C step) [Alpine Ridge 4C
2016] (rev 02)
Subsystem: Intel Corporation JHL6540 Thunderbolt 3 USB Controller (C step) [Alpine Ridge 4C 2016]
Kernel driver in use: xhci_hcd

[sebastiaanfranken@mastodon.nl]

@root42 Ok, so that's good. Also the fact the proper hcd (xhci_hcd) module is loaded is good. Anything related to it in your system journal? And if you want you can get more output / info with

> sudo lspci -s 07:00.0 -k -v

[root42@chaos.social]

@sebastiaanfranken First the lspci output

[root42@chaos.social]

@sebastiaanfranken Then syslog:
https://privatebin.net/?83d299418ae3e05a#2ZQSiucLStRySg7yKv35MQ799oqivhZVM8ftmKLAyxQ8

[dr_laemmerbein@mastodon.social]

@root42 Maybe you can get some hints by running `dmesg -w` in a terminal as root. This will show you all the kernel events and if you plug in your USB drive you should see some logs related to that. Maybe you'll get an error message or something like that.

[robert@people.unfoo.net]

@root42 Check the pins in the connectors. I had a problem like this where in a thumb drive some pins belonging to USB3 were bent / damaged and it would not work in a USB3 port. Although it worked fine in a USB2 port, those 4 pins were not damaged.

[robert@people.unfoo.net]

@root42 with USB-C it could also be the wrong type of cable.

[root42@chaos.social]

@robert no. It works in the Live thumbdrive. Only the proper install on the ssd is botched. The ports work fine.

[root42@chaos.social]

@dr_laemmerbein I am doing that. No logs when plugging in USB 3 devices. Zip. Zilch. Nada. That’s the weird thing.

[root42@chaos.social]

@robert the USB C thumbdrive connects without a cable. It works in the live system, not in the installed system.

[drscriptt@oldbytes.space]

@root42 agreed