Troubleshooting; A.2 Troubleshooting - Canon Camera Hackers Manual

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A.2 Troubleshooting

A.2

Troubleshooting

Problem: After invoking the CHDK menu or one of its submenus, the menu
sometimes vanishes after a few seconds.
Cause: The CHDK menu is overwritten when the native firmware updates
the information on the screen. This happens, for example, shortly after
start-up when the display is in the "no information" mode. It also happens
in Replay Mode when you change the orientation of the camera, or when
you switch camera modes. In all of these cases, the native firmware re-
paints the screen and the CHDK menu is destroyed.
Workaround: All buttons remain operational. Simply press the UP or DOWN
button and the CHDK menu should reappear.
Problem: When running a script, the message "assert failed—game over!"
appears and the camera shuts down.
Cause: Some script commands have brought the camera into an illegal
state. The camera shuts down in order not to damage any hardware.
Solution: Check the script. Consider using simulated key presses instead of
changing the camera state directly with commands such as set_zoom.
Problem: Script execution fails with an "Out of memory" message.
Cause: One possible cause is that the Edge Overlay feature is enabled and
has allocated memory for the overlay image.
Solution: Go to the submenu Edge overlay and disable the Edge Overlay
feature. Also, invoke the menu function Free internal Memory to release the
allocated memory.
Problem: The camera shuts down every time you switch it on.
Cause 1: You called functions from the Debug menu in an improper way.
Solution 1: Restore the file CHDK/CCHDK.CFG from a backup or delete it. You
will lose all configuration changes applied past the last backup.
Cause 2: You enabled the Autostart option in the Script menu. The current
script is faulty and causes the shutdown.
Solution 2: Edit the configuration file CHDK/CCHDK.CFG with the configura-
tion editor CFGEDIT.jar (see section 4.12). Then reset the Autostart option.
Problem: The camera hangs and does not react to key presses.
Cause 1: Possibly a bug in the CHDK.
Solution 1: Remove the batteries, wait for 10 seconds, then insert them
again and restart. If the problem persists, reinstall the CHDK. Consider us-
ing a more recent version of the CHDK.
Cause 2: You are using a wrong CHDK version.
Solution 2: Make sure to use the correct version matching both camera
model and the camera's firmware version (section 3.2).