Hi Thorsten, I'll try to provide a kernel log ASAP, it's not that easy because when I run into this issue my keyboard isn't working. The kernel parameter that Mario suggested, thunderbolt.host_reset=false, fixes the issue! I can add that without the suggested kernel parameter the issue persists with the latest Archlinux kernel 6.9.1. I also found another report of the issue on Archlinux forum: https://bbs.archlinux.org/viewtopic.php?id=295824 On Mon, May 6, 2024 at 2:53 PM Linux regression tracking (Thorsten Leemhuis) <regressions@xxxxxxxxxxxxx> wrote: > > [CCing Mario, who asked for the two suspected commits to be backported] > > On 06.05.24 14:24, Gia wrote: > > Hello, from 6.8.7=>6.8.8 I run into a similar problem with my Caldigit > > TS3 Plus Thunderbolt 3 dock. > > > > After the update I see this message on boot "xHCI host controller not > > responding, assume dead" and the dock is not working anymore. Kernel > > 6.8.7 works great. > > Thx for the report. Could you make the kernel log (journalctl -k/dmesg) > accessible somewhere? > > And have you looked into the other stuff that Mario suggested in the > other thread? See the following mail and the reply to it for details: > > https://lore.kernel.org/all/1eb96465-0a81-4187-b8e7-607d85617d5f@xxxxxxxxx/T/#u > > Ciao, Thorsten > > P.S.: To be sure the issue doesn't fall through the cracks unnoticed, > I'm adding it to regzbot, the Linux kernel regression tracking bot: > > #regzbot ^introduced v6.8.7..v6.8.8 > #regzbot title thunderbolt: TB3 dock problems, xHCI host controller not > responding, assume dead