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This error appeared two weeks ago when using the camera module. I searched on the internet and came to a conclusion that my Raspberry Pi camera module was defective.

I just received another camera module, earthed myself and connected it to RPi but the same error appeared, namely:

mmal received unexpected camera control callback event

I'm really frustrated, I have a project on RPi need to be done this Tuesday :( Help please

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1 Answer 1

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try this tutorial [ https://github.com/raspberrypi/linux/issues/435 ].

the most common problem is that the 1-wire module overwrite the gpio function selection for the I2C pins.

verify that :

ensure that i2c-bcm2708 is blacklisted in your /etc/modprobe.d/raspi-blacklist.conf (uncomment it if commented)

blacklist spi-bcm2708
blacklist i2c-bcm2708

The modules are in this order in your /etc/modules

w1-gpio
w1-therm
i2c-bcm2078
i2c-dev
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  • I did the changes in the second file /modules (already found them blacklisted in the fisrt one) now i'm getting these errors: mmal: mmal_vc_component_enable: failed to enable component: ENOSPC mmal: camera component couldn't be enabled mmal: main: Failed to create camera component mmal: Failed to run camera app. Please check for firmware updates
    – DieDen
    Commented May 16, 2014 at 18:00
  • you know, I have the same problem, and I tried to fix it for 2 months, people that follows this answer said that it works fine, but not for me. so I decided to return the camera to the store, sorry
    – user14306
    Commented May 16, 2014 at 18:02
  • as i mentioned above i did get a new camera module with the same frustrating result! i'm afraid that its a csi problem in the RPi board :( thanks anyway
    – DieDen
    Commented May 16, 2014 at 18:07

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