[Bug 2367] New: no external DVI output on radeon dualhead configuration

[bugzilla-daemon@freedesktop.org]

Please do not reply to this email: if you want to comment on the bug, go to            
the URL shown below and enter yourcomments there.     
   
https://bugs.freedesktop.org/show_bug.cgi?id=2367          
     
           Summary: no external DVI output on radeon dualhead configuration
           Product: xorg
           Version: CVS_head
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Driver/Radeon
        AssignedTo: xorg-bugzilla-noise@freedesktop.org
        ReportedBy: bugreports@nn7.de


It is not possible to configure xorg to use the _EXTERNAL_ DVI port on a radeon
M9 card.

The machine here is a tibook 15" (ppc machine) and internal display only,
internal display + external vga output, work nicely in merged framebuffer mode
(mirror or separate screens) as well as dualhead (or xinerema) setup.

However DVI only works for the external display when the internal display is in
mirror mode (and one needs to specify panel sizes for both devices). It also
only works if tmds is specified FIRST in the MonitorLayout list (swapping to:
lvfs, tmds makes X just crash). However it works for mergedfb and seperately
specified screens and X claims to have generated a large mergedfb but still the
internal display just mirrors the upper left part of the external DFP (as the
internal DFP's resolution is smaller).

The relevant part from the configs:

Section "Device"
        Identifier      "ATI Radeon Internal"
        Driver          "radeon"
        BusID           "PCI:0:16:0"
        Option "MonitorLayout" "TMDS,LVDS"
        Option "PanelSize" "1280x1024"
        Option "MergedFB" "On"
        Option "CRT2HSync" "30-100"
        Option "CRT2VRefresh" "50-150"
        Option "CRT2Position" "RightOf"
        Option "MetaModes" "1280x1024-1280x854"
        Option "DynamicClocks" "true"
        VendorName  "ATI Technologies Inc"
        BoardName   "Radeon Mobility M7 LW [Radeon Mobility 7500]"
EndSection          
     
     
--           
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email         
     
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.