Public bug reported:
Hi,
I have a weird config which show a problem where Xinerama is 'cloning' displays
rather than using 'right of' for the second screen. If I swap the arrangement
of the screens it behaves properly.
[This may be related to using different devices drivers (vesa and dummy)
- don't ask....]
extract from xorg.conf
---
# this produces GDM both on local and vnc screen - ie. wrong
Screen 0 "Default Screen"
Screen 1 "Dummy Screen" RightOf "Default Screen"
# this produces GDM on remote and 2nd screen on local - ie. correct
# Screen 0 "Dummy Screen"
# Screen 1 "Default Screen" RightOf "Dummy Screen"
Option "Xinerama" "true"
---
Xorg.0.log claims the correct arrangement, however GDM is displayed on both
screens.
---
(**) |-->Screen "Default Screen" (0)
(**) | |-->Monitor "Generic Monitor"
(**) | |-->Device "ATI Technologies Inc Radeon Mobility M6 LY"
(**) |-->Screen "Dummy Screen" (1)
(**) | |-->Monitor "Dummy Monitor"
(**) | |-->Device "Dummy GFX Card"
(**) |-->Input Device "Generic Keyboard"
(**) |-->Input Device "Configured Mouse"
(**) |-->Input Device "Synaptics Touchpad"
(**) Option "Xinerama" "true"
(**) Xinerama: enabled
---
If I swap the screens over then GDM is correctly displayed on only one screen
and windows can bring between screens.
---
(==) ServerLayout "Default Layout"
(**) |-->Screen "Dummy Screen" (0)
(**) | |-->Monitor "Dummy Monitor"
(**) | |-->Device "Dummy GFX Card"
(**) |-->Screen "Default Screen" (1)
(**) | |-->Monitor "Generic Monitor"
(**) | |-->Device "ATI Technologies Inc Radeon Mobility M6 LY"
(**) |-->Input Device "Generic Keyboard"
(**) |-->Input Device "Configured Mouse"
(**) |-->Input Device "Synaptics Touchpad"
(**) Option "Xinerama" "true"
(**) Xinerama: enabled
---
Despite GFX card being identified as ATI I am using VESA driver on the
'real' card, as ATI driver causes X to crash out.
Any suggestions?
Simon.
** Affects: ubuntu
Importance: Undecided
Status: New
--
Xinerama incorrectly 'clones' rather than 'rightof'
https://bugs.launchpad.net/bugs/154176
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