unable to play video after upgraded to ubuntu 16.04 from 14.04

[Colin Law]

On 26 April 2016 at 02:53, 李白|字一日 <calidion at gmail.com> wrote:
>
>
> 2016-04-25 21:51 GMT+08:00 Tom H <tomh0665 at gmail.com>:
>>
>> 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.

What does
apt-cache policy libgbm1
show?

Colin