Bug#422777: xserver-xorg: MergedFB CRT2 Clone stopped working after reboot

[Richard Atterer <richard@2007.atterer.net>]

Hello,

I'm not the original bug submitter, but for the record:

Brice Goglin wrote:
> You could possibly try upgrading xserver-xorg-video-ati to the one 
> currently in experimental (1:6.6.191-1). However, in the end it might be 
> better to wait for the next official release of the ATI driver before 
> upgrading to xserver-xorg-core 1.3.

Upgrading to 1:6.6.192-1 in experimental was the right thing for me: I was 
unable to get dual-head (via MergedFB) to work with the current packages in 
testing. ...So please upload that package to the regular archive soon! :)

I now have a working dual-head configuration on my Sony Vaio PCG-Z1RSP 
(Radeon Mobility M6 LY): The 1400x1050 panel of the laptop is the primary 
screen, an external LCD is driven at 1280x1024.

Previously, X11 always complained on startup that it was unable to find any 
working modes for the external LCD, and switched off MergedFB.

Cheers,

  Richard

xorg.conf snippet:
Section "Device"
        Identifier      "RadeonMerged"
        Driver          "radeon"
        Option "MergedFB" "true"
        Option "MonitorLayout" "LVDS, CRT"
        Option "CRT2Position" "LeftOf"
        Option "MetaModes" "1400x1050-1280x1024"
        Option "MergedXineramaCRT2IsScreen0" "false"
        Option "MergedNonRectangular" "true"
EndSection
-- 
  __   _
  |_) /|  Richard Atterer
  | \/¯|  http://atterer.net
  ¯ '` ¯