[Bug 216728] Thunderbolt USB Controller died after resume on Intel CometLake platform

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216728

Mark Blakeney (mark.blakeney@bullet-systems.net) changed:

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--- Comment #37 from Mark Blakeney (mark.blakeney@bullet-systems.net) ---
I'd like to confirm the same issue as Matt L reports just above (yay, I finally
found somebody else reporting this issue!). I have a Dell laptop and Dell
Thunderbolt dock and normally work on 2 dock connected screens + keyboard +
mouse with the laptop screen closed. If my laptop suspends like this, and I
then unplug the dock (e.g. to take the laptop away) then the screen stays blank
when I try to resume. This started when Arch Linux updated the kernel from
6.3.9 (good) to 6.4.1 (bad) and I have tested it bad with every point release
of 6.4 since up to 6.4.12 and is also bad on today's 6.5 which just rolled in
to Arch. I have generally been using the LTS kernel (6.1.49) to avoid this bug.

Actually, if you wait 2.5 minutes then the screen does kick back in to life
although this is inconsistent now on 6.5.

@Kamil, I was guided here from your similar bug at
(https://bugzilla.redhat.com/show_bug.cgi?id=2230357). I wouldn't be so quick
to say this is a Lenovo firmware issue. Seems to me there is something dodgy
with resume and thunderbolt and kernel 6.4/6.5.

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