在xfce4的桌面下，直接安装xrdp就可以RDP远程，但是在新版的1604上安装了kubuntu-desktop和xrdp，就死活连不上桌面。日志全是error，这是什么问题呢？？
wyl@ubuntu:~$ cat .xsession-errors
Xsession: X session started for at Thu Dec 29 09:27:39 CST 2016
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 109 (X_ChangeHosts)
Value in failed request: 0x5
Serial number of failed request: 6
Current serial number in output stream: 8
localuser:wyl being added to access control list
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 109 (X_ChangeHosts)
Value in failed request: 0x5
Serial number of failed request: 6
Current serial number in output stream: 8
libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast
QXcbConnection: Failed to initialize XRandr
Qt: XKEYBOARD extension not present on the X server.
libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast

改用tigervnc就Ok了