Thanks a lot for your answer The error was: xinit: connection to X server lost By removing xinit file, the default raspberry pi GUI will appear but commenting exec mate-session in xinit file, cause thrown an error like above. It seems that xinit file should specifies an xsession file if it exists in...

Hi I install mate according to http://www.raspbian.org/RaspbianMate instructions and it runs successfully when I execute startx but it is too slow. This is interesting that when I execute sudo startx the default raspbian GUI will appear!! anyway due to low performance of pi when I run MATE, I decide...