Bug 103794

Summary: Please set up RandR 1.5 monitors automatically as per the TILE properties
Product: xorg Reporter: Michael Stapelberg <michael+freedesktop>
Component: Server/Ext/RandRAssignee: Xorg Project Team <xorg-team>
Status: RESOLVED MOVED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: Other   
OS: All   
i915 platform: i915 features:
Description Flags
xrandr --props none

Description Michael Stapelberg 2017-11-17 14:26:07 UTC
Created attachment 135557 [details]
xrandr --props

I use X.Org 1.19.3 on Linux.

I use a Dell UP2414Q monitor, which exposes two outputs via Multi-Stream Transport (MST). I verified this issue is also present when using a display requiring multiple connections, e.g. the Dell UP3218K, which uses 2 DisplayPort connections.

When starting Xorg, the position of the individual outputs relative to each other is the wrong way around: instead of (left half, right half), I see (right half, left half) on my monitor.

Also, when using xrandr --listmonitors, I see 2 monitors instead of 1.

To fix this, I currently use the following in my ~/.xsession:

xrandr --output DP-5.8 --auto --right-of DP-5.9
xrandr --setmonitor up2414q auto DP-5.8,DP-5.9

I think it would be better if Xorg (specifically the RANDR extension, I suppose?) would look at the TILE property, arrange the outputs accordingly and create a monitor object accordingly.

I attached the output of xrandr --props.

Please let me know if you need any further details.

Comment 1 GitLab Migration User 2018-12-13 18:33:39 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

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