我收到一个错误（带有白色感叹号的红色框），提示“检查更新时出现问题”。
当我显示更新时，它表明我的软件已经是最新的。
我努力了
sudo apt-get update && sudo apt-get upgrade
已经（以及各种其他命令）在论坛中陈述了相关问题。
关于如何删除通知有什么建议吗？
当我输入时sudo apt-get install -f
输出是
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
再次，sudo apt-get update; sudo apt-get dist-upgrade; sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.