最后重新启动就好了
注意:在前面两个步骤之前需要设置yum源,下载RHEL 7 的DVD的 iso文件,刻录到光驱之上插入光驱或者u盘
以光驱为例:
1.执行命令:mount /dev/cdrom /media
2.建立yum源
vi /etc/yum.repos.d/rhel-dvd.repo
[rhel.repo]
name="Rhel7”
basefile=file:///media/
gpgcheck=0
报错如下:[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
poll_for_event:
解决:
链接库,在pro文件中
然后
参考文章: Opencv 多线程显示错误 [xcb] Unknown request in queue while dequeuing [xcb] Most likely this is a multi-thre - 从小白做起 - 博客园 (cnblogs.com)
报错:
Failed to load module "canberra-gtk-module"
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