Camera Problem afer root

[Timsung]

Hi i rooted my new samsung galaxy s 4 mini (gt-i9195).
I followed this guide:
[URL="http://forum.xda-developers.com/showthread.php?t=2364980"GUIDE[/URL]
Anyway, root and everyting else seemse to work quite webb actually. But the camtera (cant see nothing at all, black with buttons)

i get: warning
camera does not work.
Then it restarts its self.

but hey, it seems to be working agin , i took a pause in writing this. Anyway, any having the same problem?

Is it possible to get back to original, kernel and have root?


EDIT
Yeah, the camera is dead

 

[magus57]

Are you sure you haven't removed/frozen any system APK's or libraries pertaining to the camera? I've rooted using the same method and have no issues with camera, or anything for that matter.

 

[Timsung]

=)

I have no idé , but it works fine all the time now.
Restarted my phone and i think that was the trick for me!
Are u happy with your phone? i think it got everything i need!

 

[Timsung]

Oh, bigger problem. Needs help

Now, its even stranger! My locksreen always hangs (takes long time to come in to app grid)..
Nothing happens when swap with finger.
Also, when my app for airplay (wich use root) stop working.
Restarted phone, clear cache, same problem.
wipe phone, and done. Choose country etc, very laggy and slow. May it be kernel problem or somtethingt?

edit

Same thing after wiped my phone, when swipe finger over locksreen its almost never works, slow and strange!
Any idea? i bought it yesterday and today its all messed up plz help
After a while a pop up comes wich says "PRocess system does not respond. do you want to shut it down. -wait or ok- is my choises i get"
Translated rough from swedish.

sorry for my bad english