Konsole对PTY设备的读/写访问

当我运行如下的东西时:

$ konsole -e "sleep 30" 

我得到这个消息

 Konsole is unable to open a PTY (pseudo teletype). It is likely that this is due to an incorrect configuration of the PTY devices. Konsole needs to have read/write access to the PTY devices. 

但是如果我尝试运行这个:

 $ gnome-terminal -e "sleep 30" 

那很好,也不会抛出任何错误。

如何将Konsole的读/写访问权限更改为PTY设备?