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.

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.

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?

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.