Created attachment 899823 [details] dmesg during reprogramming when it is working Description of problem: ModemManager is breaking my ability to upload code to an Arduino compatibile usb device similar to the Leonardo. It should be blacklisted. Everytime the chip resets the usb interface (which the upload does as part of uploading) I find from lsof on /dev/ttyAMC0 that ModemManager has the port open. The usb has multiple ID's. Normal state: New USB device found, idVendor=1ffb, idProduct=2300 During reprogramming: New USB device found, idVendor=1ffb, idProduct=0101 I tried blacklisting it by manually editing 77-mm-...something just like the arduino entries and it didn't work. I'm just now noticing in dmesg as part of reprogramming it appears as a different PID. I eventually just did yum remove ModemManager to get it to work. Attached is an excerpt from dmesg. Version-Release number of selected component (if applicable): ModemManager-1.1.0-2.git20130913.fc20.x86_64 How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: Product page www.pololu.com/product/3101 Normal state: 1ffb:2300 During reprogramming: 1ffb:0101
Hello, Chris. This is David from Pololu. You should be able to follow the instructions we wrote in the A-Star's README.txt in order to add a udev rule for the A-Star that tells the ModemManager not to use it: https://github.com/pololu/a-star/blob/master/README.txt Also, we submitted a patch to the ModemManager project to generally ignore all Pololu devices: http://cgit.freedesktop.org/ModemManager/ModemManager/commit/?id=09d92ef3338effa85eff7f4efa416afe11f780a0 --David
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