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This is basically the same issue as described here:

Camera isn't available - Trusted Face ( Android Lollipop - Nexus 5)

Im running Marshmallow on a Nexus 5.

So yesterday i enabled password protection and Smart Lock with "Trusted Face". This worked great so far.

However, after some time (like 4-8 hours) the front camera will stop working. This will cause Smart Lock to not recognize me obviuosly and i have to use my password every time.

When launching the camera app, i am able to use the back camera, however switching to front only gives me a black screen and the app does not react to input anymore.

Rebooting the device will fix this, until it starts againt after the mentioned time-span.

Anyone got any ideas?

EDIT: Clearing the cache (as advised in an answer) did prolong the time the front camera worked to about 36 hours but did not fix this permanently.

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  • I had issues with my nexus 5 front camera not working randomly (switching to front camera would give a blank screen). wiping cache fixed it. I suggest you try it.
    – awd
    Feb 23, 2016 at 9:25
  • I just rebooted and wiped my cache. Works now obv. Will keep you updated.
    – kyze
    Feb 23, 2016 at 9:36
  • @awadheshv consider posting that as an answer since it also helped OP (and yourself :)
    – Andrew T.
    Feb 23, 2016 at 9:47
  • I had this problem too. Extremely annoying!
    – Dog Lover
    Jul 2, 2016 at 4:13

1 Answer 1

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I had issues with my nexus 5 front camera not working randomly (switching to front camera would give a blank screen). wiping cache fixed it. I suggest you try it.

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  • You already posted this as a comment. Feb 23, 2016 at 22:28
  • @AaronGillion yeah he did, however it was suggested to post as an answer, as this was actually what fixed this (to my surprise) as my smart lock still works (running since yesterday).
    – kyze
    Feb 24, 2016 at 7:39
  • Unfortunately the "error" or misbehaviour of the front camera came back yesterday evening. So clearing the cache did make it work longer, but is not a permanent fix.
    – kyze
    Feb 25, 2016 at 7:55

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