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Dear Vasp masters

I have some problem with Si band structure calculation, which is the same as on the handon.

The INCAR files is as follow
System = diamond Si
ISMEAR = -5; SIGMA = 0.1;
ENMAX = 240
IBRION=2
ICHARG= 11
NSW=15
EDIFFG = -0.01
PREC = High

the KPOINT is
kpoints for bandstructure L-G-X-U K-G
10
line
reciprocal
0.50000 0.50000 0.50000 1
0.00000 0.00000 0.00000 1
0.00000 0.00000 0.00000 1
0.00000 0.50000 0.50000 1
0.00000 0.50000 0.50000 1
0.25000 0.62500 0.62500 1
0.37500 0.7500 0.37500 1
0.00000 0.00000 0.00000 1

of course I relax the system first and get the CHGCAR and WAVECAR

my problem is that
1 why do I only get part of the band structure L-G
2 the result line is not smooth at all, how can I get a result like the handon's?
thank you for your help

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