[Bug 94712] New: second xserver has no connected output with radeon DIS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94712

            Bug ID: 94712
           Summary: second xserver has no connected output with radeon DIS
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: jydcome at 21cn.com
        QA Contact: xorg-team at lists.x.org

Hi, my notebook thinkpad w500 has two video cards, intel / radeon. When i test
some 3d games by wine or some videos by mpv using dri_prime=1 to dynamic enable
radeon card, the game/video window always tearing, see bug report
https://bugs.freedesktop.org/show_bug.cgi?id=76367.

So i try to start second xserver directly use radeon card, command like this:
$xinit /usr/bin/openbox-session -- :1 -ac -configdir radeon
(/etc/X11/Xwrapper.config already changed to allowed_users=anybody)

I put 20-radeon.conf into /etc/X11/radeon, which is:
Section "Device"
Identifier "radeonGPU"
Driver "radeon"
BusID "PCI:1:0:0"
Option "DRI" "3"
EndSection

The basic thouhgts is default xserver using intel+radoen by dri prime that is 
nice technique still needs upgrade, start second xsever just using one video
cadr(intel or radeon) as needed. 

If i just put 20-intel.conf into /etc/X11/radeon (just use intel IDG), the
second xserver runs ok. Just using radeon DIS the second xserver started
without any conntected output. run 'DISPLAY=:1 xrandr' could confirm that, all
disconnected, so it's black screen on second xserver vtn, and default xserver
vt7 still ok.

Am i missing something to config second xserver using radeon DIS, or it's not
possible?

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