I have a problem trying to display graphics to several monitors simultaneously.
What I have done is started a number of monitors, and then written a script
which contains instructions like:
d.mon select=x0
d.rast <map1>&
d.mon select=x1
d.rast <map2>&
etc
Each 'd.rast' command spawns a separate process, but these seem to interfere
with each other, with the result that some monitors wind up blank. Questions:
(a) Am I trying to do something which the X driver does not support? I have
noticed that most demo scripts write to graphics monitors in a sequential
fashion (still on release 4.0, btw)
(b) What happens if different users, on different X terminals, all try to
display at once - do they receive concurrent or sequential service?
--
Conn V Copas
Information Technology Division
Defence Science and Technology Organisation
PO Box 1500
Salisbury tel: +61 (0)8 25 95349
SA 5108 fax: +61 (0)8 25 96781
Australia e-mail: cvc@itd.dsto.gov.au
-------------------------------------------
Hi Conn,
1) Is there any reason why you shouldn't use one monitor with multiple
frames?
2) If your <map1> and <map2> are in different regions, that might cause
trouble. If the region is set correctly for <map1>, <map2> will display
as a blank white map. You could try setting new regions (and erasing
them) in your script, but I have no idea what happens to backgrounded
`d.rast` commands if you change the region....
P. Martijn van Leusen
Institute of Prehistory, University of Amsterdam martijn@scanner.frw.uva.nl
On Tue, 5 Jul 1994, Conn Copas wrote:
I have a problem trying to display graphics to several monitors simultaneously.
What I have done is started a number of monitors, and then written a script
which contains instructions like:
d.mon select=x0
d.rast <map1>&
d.mon select=x1
d.rast <map2>&
etc
Each 'd.rast' command spawns a separate process, but these seem to interfere
with each other, with the result that some monitors wind up blank. Questions:
(a) Am I trying to do something which the X driver does not support? I have
noticed that most demo scripts write to graphics monitors in a sequential
fashion (still on release 4.0, btw)
(b) What happens if different users, on different X terminals, all try to
display at once - do they receive concurrent or sequential service?
--
Conn V Copas
Information Technology Division
Defence Science and Technology Organisation
PO Box 1500
Salisbury tel: +61 (0)8 25 95349
SA 5108 fax: +61 (0)8 25 96781
Australia e-mail: cvc@itd.dsto.gov.au
-------------------------------------------