[arch-general] 2x 1440p displays not working on thunderbold dock anymore

[Ricardo Band]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

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.

- -- 

Greetings

Ricardo Band

 https://   www.ricardo.band
mailto:// email at ricardo.band
  xmpp://jabber@ricardo.band
-----BEGIN PGP SIGNATURE-----
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=gNbX
-----END PGP SIGNATURE-----