Difference between revisions of "Troubleshooting Strategies"
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(New page: * Make sure that you are observing the log file. For example <code>tail -F /var/log/apache2/error_log</code> allows one to see the error messages as they appear in the log. The location of...) |
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* Make sure that you are observing the log file. For example <code>tail -F /var/log/apache2/error_log</code> allows one to see the error messages as they appear in the log. The location of the log file on your server is likely to be different. You can find a reference to it in the Apache configuration file. |
* Make sure that you are observing the log file. For example <code>tail -F /var/log/apache2/error_log</code> allows one to see the error messages as they appear in the log. The location of the log file on your server is likely to be different. You can find a reference to it in the Apache configuration file. |
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| + | |||
| + | === Troubleshooting Specific Issues === |
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| + | |||
| + | {|border="1" |
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| + | ! Symptom |
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| + | ! Information |
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| + | |- |
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| + | | When viewing a problem with the "images" display mode, equations are not displayed, are corrupted, or are otherwise incorrect. |
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| + | | [[Troubleshooting Equation Images]] |
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| + | |- |
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| + | | When viewing a problem with the "images" display mode, users get an error message similar to "cd .../ImageGenerator.geAu1ff9 && /usr/bin/dvipng -bg Transparent -D120 equation > dvipng.out 2> dvipng.err returned non-zero status 256: Inappropriate ioctl for device". |
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| + | | [[Troubleshooting Equation Images]] |
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| + | |- |
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| + | | When generating hardcopy with the "Show Correct Answers" option enabled, users get an error message similar to HASH(0x18fa4348) in the subroutine DateTime::TimeZone::new. |
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| + | | [[Troubleshooting DateTime]] |
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| + | |- |
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| + | | When generating hardcopy containing images, users get an error message similar to "failed to convert file.gif to file.png using gif->png: Inappropriate ioctl for device". |
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| + | | [[Troubleshooting Image Conversion]] |
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| + | |- |
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| + | | A PG header file which works when used as a set header file (online) does not display properly when used as a hardcopy header file (or vice versa). |
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| + | | [[Troubleshooting Header Files]] |
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| + | |- |
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| + | | When I try to check out a module from the CVS repository, I get this error: <code>devel.webwork.rochester.edu: Operation timed out</code> followed by <code>cvs [checkout aborted]: end of file from server (consult above messages if any)</code> |
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| + | | [[Troubleshooting CVS]] |
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| + | |- |
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| + | | The PDF or TeX hardcopy for a problem set is not displaying properly. |
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| + | | [[Troubleshooting Hardcopy]] |
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| + | |} |
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| + | |||
[[Category:Troubleshooting]] |
[[Category:Troubleshooting]] |
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| + | [[Category:Administrators]] |
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Revision as of 10:23, 11 January 2011
- Make sure that you are observing the log file. For example
tail -F /var/log/apache2/error_logallows one to see the error messages as they appear in the log. The location of the log file on your server is likely to be different. You can find a reference to it in the Apache configuration file.
Troubleshooting Specific Issues
| Symptom | Information |
|---|---|
| When viewing a problem with the "images" display mode, equations are not displayed, are corrupted, or are otherwise incorrect. | Troubleshooting Equation Images |
| When viewing a problem with the "images" display mode, users get an error message similar to "cd .../ImageGenerator.geAu1ff9 && /usr/bin/dvipng -bg Transparent -D120 equation > dvipng.out 2> dvipng.err returned non-zero status 256: Inappropriate ioctl for device". | Troubleshooting Equation Images |
| When generating hardcopy with the "Show Correct Answers" option enabled, users get an error message similar to HASH(0x18fa4348) in the subroutine DateTime::TimeZone::new. | Troubleshooting DateTime |
| When generating hardcopy containing images, users get an error message similar to "failed to convert file.gif to file.png using gif->png: Inappropriate ioctl for device". | Troubleshooting Image Conversion |
| A PG header file which works when used as a set header file (online) does not display properly when used as a hardcopy header file (or vice versa). | Troubleshooting Header Files |
When I try to check out a module from the CVS repository, I get this error: devel.webwork.rochester.edu: Operation timed out followed by cvs [checkout aborted]: end of file from server (consult above messages if any)
|
Troubleshooting CVS |
| The PDF or TeX hardcopy for a problem set is not displaying properly. | Troubleshooting Hardcopy |
