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I am trying to connect a USB Data card (intex dc21.6hwm) to Beagle Bone Black(BBB) with Linux kernel (Ver: 3.8.11). Un-fortunately the datacard didn't respond/ failed to power-Up upon plug-in. The issue repeated with other data cards as well. No Usb Activity captured on lsusb & dmesg. So far hauwei datacard is the only working plug & play model identified. What can be the issue with other datacards. Any debug points/suggestions will be highly helpfull.
Thanks, Vivek.T.
vivek Thullimalli
Posted 2019-03-26T16:00:11.620
Reputation: 11
I see you're new here, per /help/behavior you don't have to use a signature. Regarding your question: 3G/4G cellular modems usually have high power requirements. Do you have sufficient power supply? Have you checked BBB's usb ports are not current limited?
– trogper – 2019-03-26T16:45:17.207Hi trogper, Thanks for the quick response. so far i m using power adapter specified by the BBB. 1. what can be the minimum power requirement for 3G/4G Modems? 2. As of now, I m not aware of BBB's usb ports current limitations, can you gave vague idea regarding where can i get relevant information on this? Thanks! – vivek Thullimalli – 2019-03-26T17:34:21.567
That kernel is very very very old. Please try this with an up to date kernel. The official Debian images come with newer kernels. – TBR – 2019-03-27T18:53:19.323
Hi TBR, Upon suggestion taken latest kernel(4.14) from BB. Compiled and flashed on board, Still not able to detect datacards. Thanks! – vivek Thullimalli – 2019-03-29T14:59:38.957