# Cannot read mangOH green board information from Legato while connecting

**URL:** <https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611>\
**Category:** Legato Linux distribution (Yocto project)\
**Created:** [August 17, 2017, 2:05pm UTC](https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611 "2017-08-17T14:05:59Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![lichen](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@lichen](https://forum.legato.io/u/lichen)\
**Post date:** [August 17, 2017, 2:05pm UTC](https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611/1 "2017-08-17T14:05:59Z")

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Hello all,

Testing the new device of mangOH green development board with an extremely simple HelloWorld sample code. After defining the connection, I tried to connect the connection with the actual target device. But the error message occurs saying " ‘Refresh properties of xxxx’ has encountered a problem", where xxxx is the connection name.

The details of this error are as follows:

Cannot retrieve hardware type  
Cannot retrieve CPU info  
Cannot retrieve hostname  
Cannot retrieve framework version

The radio module that I used is WP8548. The Legato is installed on a virtual machine of Ubuntu 16.04.

What could be wrong?

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**Author:** ![dfrey](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/dfrey/32/563_2.png) [@dfrey](https://forum.legato.io/u/dfrey)\
**Post date:** [August 17, 2017, 4:58pm UTC](https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611/2 "2017-08-17T16:58:55Z")

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I think you might be hitting a known issue with `modemmanager` package. It seems to knock out the ecm interface that provides a network device to the development PC from the WP module. Try to run `sudo apt-get remove --purge modemmanager` and reboot the VM.

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**Author:** ![lichen](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@lichen](https://forum.legato.io/u/lichen)\
**Post date:** [August 18, 2017, 9:18am UTC](https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611/3 "2017-08-18T09:18:28Z")

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I tried your solution but it does not solve the problem. The same error message still occurs. The communication between the PC and the module is good since I can manage to ping the module.

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**Author:** ![daav](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/daav/32/64_2.png) [@daav](https://forum.legato.io/u/daav)\
**Post date:** [August 18, 2017, 2:42pm UTC](https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611/4 "2017-08-18T14:42:49Z")

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Hi @lichen

Please can you check your DS version, and share the DS workspace log here?  
( **\<workspace\>/.metadata/.log** file)

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**Author:** ![lichen](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@lichen](https://forum.legato.io/u/lichen)\
**Post date:** [August 18, 2017, 3:06pm UTC](https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611/5 "2017-08-18T15:06:01Z")

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Hi Daav. I today found the DS is too old to support the Legato framework on the WP module. Thanks anyway.

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**Author:** ![daav](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/daav/32/64_2.png) [@daav](https://forum.legato.io/u/daav)\
**Post date:** [August 21, 2017, 6:59am UTC](https://forum.legato.io/t/cannot-read-mangoh-green-board-information-from-legato-while-connecting/2611/6 "2017-08-21T06:59:05Z")

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Hi @lichen  
Please note that you can upgrade DS, even if installed in a VM.