unable to play video after upgraded to ubuntu 16.04 from 14.04

[Tom H]

On Mon, Apr 25, 2016 at 4:26 AM, 李白|字一日 <calidion at gmail.com> wrote:
> 2016-04-24 21:03 GMT+08:00 Tom H <tomh0665 at gmail.com>:
>> On Sun, Apr 24, 2016 at 5:12 AM, 李白|字一日 <calidion at gmail.com> wrote:
>>>
>>> /usr/bin/mpv: error while loading shared libraries: libgbm.so.1: cannot
>>> open
>>> shared object file: No such file or directory
>>
>> Is libgbm1 installed? It's a dependency of xserver-xorg-core.
>
> libgbm1 is installed.
> only vlc player can work now.

Please bottom-post.

What's the output of
ll /usr/lib/x86_64-linux-gnu/libgbm*
and
ldd /usr/bin/mpv | grep libgbm

VLC isn't linked against libgbm.