[Bug 23535] New: Can't out the composite video output on my Macbook Pro

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=23535

           Summary: Can't out the composite video output on my Macbook Pro
           Product: xorg
           Version: 7.3
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: monnier at iro.umontreal.ca
         QAContact: xorg-team at lists.x.org


Created an attachment (id=28935)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28935)
Xorg.log

I'm trying to connect my Macbook Pro to my old TV (whose sole input is
composite video).  This is done using Apple's "DVI to Video adapter" which has
both an S-video and a composite output.  The video card itself is a Radeon
mobility X1600.

Running the "radeon" driver without any special options, xrandr gives me 2
entries: one for LVDS and one for DVI-0 (which seems to work for all output on
this connector, at least it works as well for a DVI monitor as for a VGA
monitor plugged via Apple's DVI->VGA adapter.  When I plug my "DVI to video"
adapter, "xrandr" tells me that DVI-0 is connected but it has no modes.  I
tried to add modes manually (including some copied from
http://www.nexusuk.org/projects/vga2scart/ which seemed credible) and I do get
some kind of output on my TV, but it's not syncing.

I then tried to enable ATOMTvOut and such options, but all it did was add an
"S-video" entry which didn't seem to help.  It always says it's disconnected. 
It may correctly control the S-video output, actually, but I don't have an
S-video thingy to connect to it to try it out.  In any case, forcing
"ForceTVOut" did not help: xrandr says that the S-video is then connected (of
course) and I can select a mode, but no matter what mode I select, my TV
(connected via the composite, remember) stays desperately black.  With
ATOMTvOut set, the DVI-0 situation stays the same: its connectedness status
reflects the fact that the "DVI to Video" adapter is connected, and if I enable
it with some ntsc-ish mode, I do get some kind of output on my TV, tho it's out
of sync.

I've attached the Xorg.log from one such run.


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