Discussion:
[Fluxbox-users] where does fluxbox get dual screen info?
Hans Schippers
2009-05-14 07:54:19 UTC
Permalink
Hi,

Somehow fluxbox seems to be able to find out that I have a two screen
setup (which I configure through xrandr).

This works fine with a radeon driver.

However, when I change the driver to fglrx, I still have two screens
but fluxbox sees them as one big screen (so for example, the choice
for the slit to be put on a specific screen is gone).

Hence my question, which info does fluxbox use to determine the number
of screens? And how can this be influenced?

Thanks in advance,

Hans
--
Dr. Hans Schippers
Doctor-Assistant
Formal Techniques in Software Engineering (FoTS)
University of Antwerp
Middelheimlaan 1
2020 Antwerpen - Belgium
Phone: +32 3 265 37 88
Fax: +32 3 265 37 77
http://www.win.ua.ac.be/~hschipp/

A liberal is a person whose interests aren't at stake at the moment
-- Willis Player
Hans Schippers
2009-05-14 12:02:47 UTC
Permalink
Answering my own question, it gets its info from the XINERAMA
extension, which can be queried like this:

xdpyinfo -ext XINERAMA

The heads showing up there determine the heads used in fluxbox.

Apparently the fglrx driver doesn't enable XINERAMA by default, so it
has to be done manually, in the ServerLayout section of xorg.conf:

Option "Xinerama" "True"

Cheers,

Hans
Post by Hans Schippers
Hi,
Somehow fluxbox seems to be able to find out that I have a two screen
setup (which I configure through xrandr).
This works fine with a radeon driver.
However, when I change the driver to fglrx, I still have two screens
but fluxbox sees them as one big screen (so for example, the choice
for the slit to be put on a specific screen is gone).
Hence my question, which info does fluxbox use to determine the number
of screens? And how can this be influenced?
Thanks in advance,
Hans
--
Dr. Hans Schippers
Doctor-Assistant
Formal Techniques in Software Engineering (FoTS)
University of Antwerp
Middelheimlaan 1
2020 Antwerpen - Belgium
Phone: +32 3 265 37 88
Fax: +32 3 265 37 77
http://www.win.ua.ac.be/~hschipp/
A liberal is a person whose interests aren't at stake at the moment
 -- Willis Player
--
Dr. Hans Schippers
Doctor-Assistant
Formal Techniques in Software Engineering (FoTS)
University of Antwerp
Middelheimlaan 1
2020 Antwerpen - Belgium
Phone: +32 3 265 37 88
Fax: +32 3 265 37 77
http://www.win.ua.ac.be/~hschipp/

A liberal is a person whose interests aren't at stake at the moment
-- Willis Player
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