Arch Linux

ezxd

Member

Registered: 2023-02-21

Posts: 2

Issue with Daisychain

I use Kernel: 6.1.12-arch1-1
I have two monitors which I connected with Daisy-chain. If I boot with an HDMI cable plugged in, no issues.
But if I boot with my DisplayPort cable plugged in I get to 'systemd-udev loading...' and then just black screen and after that no signal. (I have an luks encrypted disk)
It doesn't change anything if I plug in another cable then.
But if I boot with HDMI, no issues and then plug in the DisplayPort cable with daisy-chain it works perfect.
I have an AMD ATI Radeon RX 6700 XT
Any ideas?

Last edited by ezxd (2023-02-21 23:38:19)

merc68k

Member

Registered: 2011-08-07

Posts: 31

Re: Issue with Daisychain

Sounds somewhat similar to my problem with a Radeon and DisplayPort;  https://bbs.archlinux.org/viewtopic.php?id=283575.  It seems like the daisy chaining or DP1.2 support in the amdgpu driver (or somewhere else) might not be 100% - I solved the problem by a combination of connecting both screens directly to the video card and also turning off DisplayPort 1.2 support on my Dell screens.

ezxd

Member

Registered: 2023-02-21

Posts: 2

Re: Issue with Daisychain

Firstly, thank you for replying. Obviously, I could do that. But the solution for none working daisy chain can’t be to not use it.