相关疑难解决方法(0)

我在 Ubuntu 上发现一个应用程序有问题。

问题 ：

• 我如何最好地报告问题？
• 我应该提供什么样的信息？

上面的错误是什么意思？什么是安装候选？

我试图做

sudo apt-get install munin-memcached  

我收到这条消息：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package munin-memcached is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package munin-memcached has no installation candidate

我用谷歌搜索了这个问题，有人说要做一个，apt-get upgrade但它仍然没有解决我的问题。