wireshark错误QT: XKEYBOARD extension not present on the X server 和/usr/bin/dumpcap permission denied

错误信息如上。改为安装wireshark-gtk即可

执行 

sudo dpkg-reconfigure wireshark-common 

sudo gpasswd -a $USER wireshark
然后重登陆即可

原文：http://www.cnblogs.com/guigukuangji/p/7123603.html