14 lines
579 B
Markdown
14 lines
579 B
Markdown
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# Linux Connectivity Issues caused by ModemManager
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CDC ACM is interface mostly used for modems.
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ModemManager tries to detect modem on all newly added ttyACM devices.
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This breaks TunerStudio communication few seconds after establish when ModemManages sends few AT commands.
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https://stackoverflow.com/questions/24696527/modem-manager-and-ttyacm-in-use
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Simple solution:
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systemctl stop ModemManager.service
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Advanced solution:
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Add VID, PID to udev rules with ENV{ID_MM_DEVICE_IGNORE}="1" attribute
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https://linux-tips.com/t/prevent-modem-manager-to-capture-usb-serial-devices/284/2
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