[Bug 41248] New: Monitor goes black when starting TV

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=41248

           Summary: Monitor goes black when starting TV
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: gonaslund at gmail.com
         QAContact: xorg-team at lists.x.org


The problem is this:
I have an HD5770 card with 3 screens connected, 1 monitor to DisplaPort-0 and 1
monitor to the DVI-0 and a TV to the HDMI-0

When I turn my tv on the screen connected to displayport immidiately goes black
and it says "no signal". To wake this screen again i need to issue the command
"xset dpms force suspend" This will wake the screen connected to the
displayport. The same thing also happens when I turn the tv off again.

How it should work and has worked before:
I should be able to turn my tv on and off without it interfering with my other
screens.

I have pinned this regression down to happen in the kernel 3.0.3 found here
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.0.3-oneiric/
But it is alright in the kernel 3.0.2 found here
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.0.2-oneiric/ 

This is the changes made between 3.0.2 and 3.0.3 that i think has something to
do with my problem.

Alex Deucher (3):
      drm/radeon/kms: don't enable connectors that are off in the hotplug
handler
      drm/radeon/kms: fix regression is handling>2 heads on cedar/caicos
      drm/radeon/kms: don't try to be smart in the hpd handler

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