Re: Dell WD19TB Thunderbolt Dock not working with kernel > 6.6.28-1

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Hi Greg,

I can reproduce the issue with the upstream Linux kernel: I compiled
6.6.28 and 6.6.29 from source: 6.6.28 works, 6.6.29 doesn't.

I'll learn how to do 'git bisect' to narrow it down to the offending commit.

The non-lts kernel is also broken.

Fabian

On Mon, Sep 23, 2024 at 8:45 AM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Mon, Sep 23, 2024 at 08:34:23AM +0200, Fabian Stäber wrote:
> > Hi,
>
> Adding the linux-usb list.
>
> > I got a Dell WD19TBS Thunderbolt Dock, and it has been working with
> > Linux for years without issues. However, updating to
> > linux-lts-6.6.29-1 or newer breaks the USB ports on my Dock. Using the
> > latest non-LTS kernel doesn't help, it also breaks the USB ports.
> >
> > Downgrading the kernel to linux-lts-6.6.28-1 works. This is the last
> > working version.
> >
> > I opened a thread on the Arch Linux forum
> > https://bbs.archlinux.org/viewtopic.php?id=299604 with some dmesg
> > output. However, it sounds like this is a regression in the Linux
> > kernel, so I'm posting this here as well.
> >
> > Let me know if you need any more info.
>
> Is there any way you can use 'git bisect' to test inbetween kernel
> versions/commits to find the offending change?
>
> Does the non-lts arch kernel work properly?
>
> thanks,
>
> greg k-h





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