gPhoto2 - Bulb Capture Not Working | Nikon D5100

Hello.

I am testing Bulb Capture in my Nikon D5100 but its not working.

root@cubie:/home/linaro/gphoto# gphoto2 --get-config shutterspeed |grep
Current
Current: Bulb
root@cubie:/home/linaro/gphoto# gphoto2 --set-config bulb=1
--wait-event=10s --set-config bulb=0

*** Error ***
bulb not found in configuration tree.
Waiting for 10 seconds for events from camera. Press Ctrl-C to abort.

*** Error ***
bulb not found in configuration tree.
*** Error (-1: 'Unspecified error') ***

For debugging messages, please use the --debug option.
Debugging messages may help finding a solution to your problem.
If you intend to send any error or debug messages to the gphoto
developer mailing list <[email protected]>, please run
gphoto2 as follows:

    env LANG=C gphoto2 --debug --debug-logfile=my-logfile.txt --set-config
bulb=1 --wait-event=10s --set-config bulb=0

Please make sure there is sufficient quoting around the arguments.

root@cubie:/home/linaro/gphoto#

Anyone advise please?

Thanks.

Regards.

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