SiS 771/671 and MergedFB Xinerama
mimosinnet at gmail.com
Mon Jun 2 15:58:09 PDT 2008
Hi to everybody. I would appreciate if you could give me some hints on
I have two screens, an external VGA monitor with a resolution of 1280x1024,
and the LCD with 1280x800. The final virtual desktop is 2560x1024. Therefore,
there is a region in the 1280x800 LCD monitor lager than the visible area.
From the documentation, you could:
(a) Move the mouse cursor towards the edges and scroll ("pan") the display.
(b) "If you have display devices with different maximum resolutions you might
desire a non-rectangular screen to avoid panning."
Winischhofer site). This is achieved by the MergedNonRectangular option in
I am having a very strange behaviour. When X starts, I get the (a) panning
behaviour (xdm login screen). In this situation, when I maximise a window, it
occupies the whole virtual desktop (both monitors). If I log into my window
manager (fvwm) and exit, I am able to get (b) MergedNonRectangular option
(the one I prefer, because maximised screens stay on one monitor). If I
restart X (ctrl-backspace) I am in (a) behaviour again. The log
file /var/log/Xorg.0.log does not change after exiting and entering back into
my window manager (fvwm).
I do not understand why entering and exiting my window manager would change
how xinerama behaves. Also, I would like to have the (b) behaviour from the
beginning, without having to enter and exit my window manager. Any hints
I have a SiS 771/671 PCIE card. I am using MergedFB and I have followed the
Winischhofer site[/url]. This is the device section of
VendorName "Silicon Integrated Systems [SiS]"
BoardName "771/671 PCIE VGA Display Adapter"
Option "EnableSiSCtrl" "yes"
Option "DRI" "off"
Option "MergedFB" "auto"
Option "MetaModes" "1280x1024-1280x800 1280x1024+800x600 1280x800 800x600"
Option "MergedNonRectangular" "on"
Option "MergedDPI" "100 100"
More information about the xorg