Hi Raymond,

On Wed, May 10, 2023 at 08:50:06PM +0200, Raymond de Vries wrote:
> Hi,
> 
> I am trying out my Canon G7X to have an endless preview duration by calling
> 'gp_camera_capture_preview()' in a loop (of course cleaning up via
> gp_file_unref()). This is working well for some time and then
> gp_camera_capture_preview() does not get a preview anymore.
> 
> It seems that it is related to the setting 'Power Saving' - 'Display Off'.
> It seems that the preview is only available for that specific amount of
> time, with a maximum value of 3 minutes. Is there any way to avoid this?
> 
> In general, I am trying to understand better how libgphoto2 is communicating
> with the camera. So any tip or trick is welcome.
> 
> I have included a few log files, hoping to provide the information that is
> required. If it matters, this is on Ubuntu 22.04

For the EOS cameras there was a KeepDeviceOn command which we are
calling if present.

Your G7X does not report that command to be available.

Where is the Power Saving setting? Seems not in the config tree?

Ciao, Marcus


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