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#1 2023-03-22 13:35:01

Utini
Member
Registered: 2015-09-28
Posts: 481
Website

TB3 Dock -> External displays won't wake up after inactivity

Hi again,

not sure where to start troubleshooting this.

Thinkpad T14s Gen 3 AMD 6850u with Lenovo TB3 dock (connected to USB 3.2 because the USB 4 port has glitches).
Kernel: x86_64 Linux 6.2.7-arch1-1
KDE Plasma
Wayland

Everything works fine. I can work on my system 8h straight.
But as soon as I leave my desk and give it some inactivity, the OS will lock (lock screen) and after some time the displays will turn off.
If I then pretty any buttons I can see the laptops keyboard backlight turn on, I can also get e.g. the capslock LED to turn on/off but I can't wake up the screens.
I always have to manually disconnect/connect the dock to get it to work again.

Any ideas/suggestions?
I already tried googling but couldn't find similiar issues or any starting point to troubleshoot.


Setup 1: Thinkpad T14s G3, 14" FHD - R7 6850U - 32GB RAM - 2TB Solidigm P44 Pro NVME
Setup 2: Thinkpad X1E G1, 15.6" FHD - i7-8850H - 32GB RAM - NVIDIA GTX 1050Ti - 2x 1TB Samsung 970 Pro NVME
Accessories: Filco Majestouch TKL MX-Brown Mini Otaku, Benq XL2420T (144Hz), Lo(w)gitech G400, Puretrak Talent, Sennheiser HD800S + Meier Daccord FF + Meier Classic FF

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