Framework13, AMD 7840 No longer sees Caldigit TS3+ thunderbolt dock

Framework Laptop 13 Linux
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I’ve used my Framework AMD 7840 (Currently running Fedora 42) with a Caldigit TS3+ for almost 2 years. It’s been great - I have a 4k monitor, keyboard, mouse, audio hooked up to the dock. I plug the dock in and boom, desktop computer.

But today, it doesn’t connect. I have another machine which I “hotswap” the thunderbolt plug to and it sees the dock and works great. So the dock, the cables are fine. But when I swap the plug to my framework, nothing - just power. The blue light on the Caldigit stays dark.

I ran software updates, I rebooted. I power cycled the Caldigit dock. No improvement - my other computer still sees the dock just fine, but my framework does not.

I’m not certain when it failed because I was out of town for a few days and had powered my Framework off. I assume a software update did this, but I don’t know how to diagnose it.

I’m not a linux expert - if there are any commands I can run to gather useful information, let me know and I will.

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Did you try to boot the laptop with the dock plugged?

I’m getting strange issue that my FW13 only “see” my TB4 dock when I boot with it plugged.
this started about a few days ago.

Sometimes only a cold boot helps.

EDIT:
Just tested on Windows 11, it does work, without issues, so is probably a Linux or Fedora issue.

@Shamyl_Zakariya can you try on windows or another distro?

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Try running lspci and see if it recovers.

If it does I think I know what’s going on. There was a kernel regression (unfortunately caused by me!) and I can point you to a patch for it.

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yep, lspci somehow “fixes” it, at least my USB4 SSD is recognized now, will try the dock later.

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Wow… lspci did it for me as well. Since it sounds like this is a regression, and I have a workaround for the meantime, I’m feeling like I can be patient. Thanks!

FWIW, I was going to try an ubuntu live image this morning, but no longer need to.

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I’m happy to manually run lspci until the fix for the regression lands.

Back in the early 2000’s I recompiled my kernel all the time (Gentoo, sigh), these days I don’t have the patience, confidence, or free time to do so. I’m happy to wait. But, drop a message here when the patch lands if you don’t mind?

Thanks!

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I suggest you report this to your distro kernel and give them that link. They can take the patch early.

Sorry for the breakage!

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