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IRIS
EXPLORERTM
Frequently Asked Technical Questions |
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| DEC
[HP / Compaq] Alpha (UNIX) Specific Questions |
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The colours in my windows change as I move from window to window. [answer
here]
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The Render module fails whilst attempting to take either a Snapshot or
Print with the error messages. [answer here]
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| Question
1 |
The colours in my windows change as I move from window to window. |
| Answer 1 |
Some graphics adaptors (e.g. the ZLX(p)-E1) support only 8 bits per
pixel, i.e. only 256 colors on screen at a time. This sometimes forces
the window manager to switch colormaps as the user moves from window to
window. To ensure this happens correctly when using IRIS Explorer the environment
variable "CXCOLORMAP" should be set before running IRIS Explorer:
C shell users:
% setenv CXCOLORMAP
Bash/Korn shell users:
% CXCOLORMAP=
% export CXCOLORMAP
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| Question 2 |
The Render module fails whilst attempting to take either a Snapshot or Print with the error messages:
Render: X Error of failed
request: BadWindow (invalid Window parameter)
Render: Major opcode of
failed request: 3 (X_GetWindowAttributes)
Render: Resource id in failed
request: 0x4800003
Render: Serial number of
failed request: 28
Render: Current serial number
in output stream: 29
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| Answer 2 |
The DISPLAY environment variable is either not set, or is set to":0.0"
causing the system to use "direct rendering" on certain graphics cards
(e.g. 4D60T, 4D51T, 4D50T, 4D40T). To avoid this, modify the DISPLAY variable
to contain your hostname, e.g. on a system called "dennis":
C shell users
% setenv DISPLAY dennis:0.0
Bash/Korn shell users:
% DISPLAY=dennis:0.0
% export DISPLAY
N.B. This may cause a slight drop in performance |