Ubuntu下安装Teamviewer所遇certificates.crt CRLfile: none问题

用 windows 远程控制 Ubuntu 电脑：

用网上的一些教程去安装teamviewer （我下载的是teamviewer_15.35.7_amd64.deb）

#命令进行安装
sudo dpkg -i  teamviewer_15.35.7_amd64.deb 
#安装报错，修复依赖项
sudo apt-get install -f 

但是依旧安装失败，并报错：

server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none

说明证书验证失败，因此用了下面一系列方法，还是失败：

#方法一
export GIT_SSL_NO_VERIFY=1
#方法二
sudo update-ca-certificates 
#方法三
git config --global http.sslverify false

在看了报错的具体内容，发现有一些源的内容，于是怀疑是不是Ubuntu 用的国内源有问题了，就打算更换国内源：

1 先备份好之前的源文件

sudo cp /etc/apt/sources.list sources_backup.list

然后用下面命令查看sources_backup.list文件已经备份好

ls -l

2 修改 /etc/apt/sources.list 源文件

#打开源文件，并修改
sudo gedit /etc/apt/sources.list

提供两个国内源，可直接将原内容删除并复制进去（因为已经提前备份好了）

#阿里云源
deb-src http://archive.ubuntu.com/ubuntu xenial main restricted
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe
deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse
 
#清华大学源
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial universe
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates universe
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security universe
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security multiverse

3 最后更新即可

sudo apt-get update
sudo apt-get -f install
sudo apt-get upgrade

等更新完成后重新安装就成功了：

sudo dpkg -i  teamviewer_15.35.7_amd64.deb