[Bug 25520] New: Enabling and disabling TV output kills dual-head

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25520

           Summary: Enabling and disabling TV output kills dual-head
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: rah at bash.sh
         QAContact: xorg-team at lists.x.org


Created an attachment (id=31836)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31836)
Xorg log for git master

I have two flat panels and a TV connected to my rv770.  Ordinarily, I use the
two flat panels for X.  In order to display things on the TV, I have to disable
one of the flat panel outputs with xrandr and enable to the TV output. 
However, if I do this and then disable the TV output again, the flat panel will
not work again.

The non-working panel says it is receiving an input signal but it is out of
range and recommends that I set the resolution to the panel's optimum.  This
panel is connected by a VGA connector.

This is evidently touching something deep as restarting X does not bring the
panel output back from the dead; it comes alive but still reports a bad input
signal.  Even stranger: when switching to the console in this state, the
workingness of the monitors is reversed; the panel that is dead in X displays
the console and the panel that is working in X is dead.

This happens with version 6.12.3 of the radeon DDX driver, and with git master
(both kernel 2.6.32 without KMS.)


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