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I just tried to run the actual Ubuntu 16.04 release and had to uninstall the alsa-utils as they caused a kernel panic. 
 
You have to uninstall them after the system has booted the first time or your system is blocked ! 
 
Ubuntu 16.04.1 LTS OrangePi ttyS0 
 
OrangePi login: root 
Password: 
Last login: Thu Feb 11 16:28:33 UTC 2016 on ttyS0 
Welcome to Ubuntu 16.04.1 LTS (GNU/Linux 3.10.62-rel5.0.2 armv7l) 
(...) 
root@OrangePi:~# 
root@OrangePi:~# apt-get purge --auto-remove alsa-utils 
Reading package lists... Done 
Building dependency tree 
Reading state information... Done 
The following packages will be REMOVED: 
  alsa-utils* 
0 upgraded, 0 newly installed, 1 to remove and 80 not upgraded. 
After this operation, 2,097 kB disk space will be freed. 
Do you want to continue? [Y/n] y 
(...) 
 
 
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