Bug 91109 - "modesetting" does not use my second card's output
Summary: "modesetting" does not use my second card's output
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/modesetting (show other bugs)
Version: 7.7 (2012.06)
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
Depends on:
Reported: 2015-06-25 14:43 UTC by monnier
Modified: 2018-12-13 18:11 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Xorg.2.log (28.25 KB, text/plain)
2015-06-25 14:43 UTC, monnier
no flags Details

Description monnier 2015-06-25 14:43:49 UTC
Created attachment 116715 [details]

I have two video cards, each connected to one monitor via DVI.
The first card is a Poulsbo (using the gma500_gfx kernel module), the second is a displaylink (using the udl kernel module).  They both have an entry in /dev/dri.

My xorg.conf is just:

   Section "Device"
        Identifier      "Video Device"
        driver          "modesetting"
        Option  "ModeDebug" "true"

The X server does see both cards (e.g., "xrandr --listproviders" shows the two cards), but only sees (and sets up) the output of the Poulsbo ("xrandr" only lists the DVI-0 output).

The Xorg.log (attached) mentions a DVI-1-0 output connected on the displaylink card, but for some reason it doesn't try to get the EDID and "xrandr" can't use it (e.g. if I try "xrandr --output DVI-1-0 --auto" it tells me there's no such output).
Comment 1 GitLab Migration User 2018-12-13 18:11:11 UTC
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