Ability to tell NNG proggy not to process GLONASS data is not possible (at least from what I know)
Ability to tell the device GPS chipset to not collect/receive GLONASS data is depended on the device; not possible for my android phone that has the problem.
BTW, "show_glonass" use in sys.txt is just that, for showing; note it's not use_glonass.
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