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Xubuntu 16.04LTS GCC 5.4.1  AMD Athlon II x2 240

Cpuminer-opt 3.5.10

Built with -march=btver1    compiling with -march=core2 makes no difference , same result   both arches choosen working on this CPU

algos they work or not    

timetravel  OK
neoscrypt   OK
decred        OK
blake2s      OK
x17             Fail
m7m          OK
c11             Fail
blakecoin   OK
sib              Fail
x11evo       Fail
veltor         OK
yescrypt     Fail
nist5           OK
groestl        OK
Qubit          Fail
x13             Fail
x14             Fail
x15             Fail
Quark         OK
myr-gr        OK
skein          OK
keccak       OK
xevan        Fail
hmq1725   Fail
lyra2rev2   OK
lyra2z        Fail

hope this help someone