linux-kernel - Re: [REGRESSION] Thunderbolt Host Reset Change Causes eGPU Disconnection from 6.8.7=>6.8.8

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Date: Mon, 20 May 2024 11:19:34 +0200
From: Gia <giacomo.gio@...il.com>
To: Linux regressions mailing list <regressions@...ts.linux.dev>
Cc: linux-kernel@...r.kernel.org, 
	"stable@...r.kernel.org" <stable@...r.kernel.org>, kernel@...ha.zone, 
	Mario Limonciello <mario.limonciello@....com>
Subject: Re: [REGRESSION] Thunderbolt Host Reset Change Causes eGPU
 Disconnection from 6.8.7=>6.8.8

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@...mhuis.info> 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@gmail.com/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