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On Sat, 2019-09-14 at 14:40 -0400, wry--- via arch-general wrote:
I use Arch on a Thinkpad T480 with the Lenovo Thunderbold 3 dock.
Hi, I have the same dock and I have had loads of problems with it. Almost all of them resolve and reoccur somewhat randomly - nothing seems reproducible. I think the issue (for me) is the dock, not the laptop.
Mine had some weird behaviour but nothing a reconnect or reordering of commands couldn't fix.
I don't know why this doesn't work anymore. Could it be a driver issue?
Do the displays work correctly again with a cable other than DP, like HDMI?
The displays are connected via HDMI and a DP->HDMI adapter. I got my desktop PC connected to the DP ports of the monitors. The dock uses the HDMI ports.
You could also look into your BIOS firmware
I booted into windows and updated everything. Including thunderbold and dock firmware. Nothing changed. Still the same behaviour. I'm also back on the newest nvidia driver (435.21-4).
I'm out of ideas. I could try to boot without the nvidia. maybe it works with only intel. But I'm not sure if that is even possible. Ports could be wired to the nvidia card.
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