trying command mount //10.150.150.56/Arch /mnt -t cifs -o
user=user,pass=password
mount error(112): Host is down

but through pcman smb://10.150.150.56/Arch with user=user and pass=password
work perfectly

Resul of gvfs
virex@lnxvrx53:/run/user/1000/gvfs> ls -la 
���������� 0
dr-x------  4 virex users   0 ������ 21 15:18 .
drwx------ 11 virex users 340 ������  4 17:35 ..
drwx------  1 virex users   0 ������  2 07:54
smb-share:server=10.150.150.56,share=$$$$
drwx------  1 virex users   0 ������  5 08:40
smb-share:server=10.150.150.56,share=arch