Re: Occasional crash when running --capture-image-and-download

Thanks all for the debugging advice. I couldn't ever find any evidence of
what was going wrong in syslog or anywhere else, but I eventually zeroed in
on a power issue. It turns out the USB power adapter I was using to power
the RPi and the camera could only supply 2.1A total between both USB ports,
which shouldn't be enough to power both devices. It seems this only became
an issue while the camera was taking a picture. I ordered a new power
adapter that can supply 4.8A total and I haven't had a similar event yet!

Brian

On Sun, Mar 29, 2020 at 11:04 PM Marcus Meissner <[email protected]>
wrote:

> Hi,
>
> On Sun, Mar 29, 2020 at 11:58:59AM -0700, Brian Hulette wrote:
> > Hi all,
> > I'm working on setting up a timelapse photography rig by running gphoto2
> on
> > an RPi Zero W to control a Canon EOS 1100D. Unfortunately, I've run into
> > some issues: occasionally when I run `gphoto2
> --capture-image-and-download`
> > in an ssh session the process seems to kill the entire RPi. I turned on
> > debug logging to capture what is happening just before one such crash
> > (attached).
> >
> > I was wondering if anybody here could provide some insight into what is
> > going on, or at least direct me to what I could do to debug further.
> >
> > Thanks!
> > Brian
>
> > 1.641046 camera_trigger_canon_eos_capture(2): focusing - read event type
> 3
> > 1.641225 camera_trigger_canon_eos_capture(2): focusing - read event type
> 3
> > 1.642534 camera_trigger_canon_eos_capture(2): focusing - read event type
> 0
> > 1.642896 ptp_usb_sendreq             (2): Sending PTP_OC 0x9128
> (PTP_OC_CANON_EOS_RemoteReleaseOn) (0x2,0x0) request...
> > 1.643419 ptp_usb_getresp             (2): Reading PTP_OC 0x9128
> (PTP_OC_CANON_EOS_RemoteReleaseOn) response...
>
> The last printed command does not seem a weird step. Nothing big is
> transfered
> or special is happening.
>
> Is there anything weird printed in the syslog if you can get at that?
>
> Ciao, Marcus
>

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