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| venus-os:gx-gsm [2019-10-03 22:01] – Line break added to prevent clipping krenzke | venus-os:gx-gsm [2019-10-03 22:57] – [6. Trouble shooting] mvader |
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| | SIM wrong | Type of SIM is not supported | | | SIM wrong | Type of SIM is not supported | |
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| ===== 6. Trouble shooting ===== | [[http://example.com|External Link]]===== 6. Trouble shooting ===== |
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| Whilst usually working well, in case the modem does not connect to the internet it can one of many reasons. Carefully go through each step of this trouble shooting guide, starting at the first. | There are many reasons for modem internet connection to not work. Carefully go through each step of this trouble shooting guide. Make sure to start at the first step. When asking for help, make sure to mention each step taken and the result. |
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| ^ Step ^^ Details ^ | ^ Step ^^ Details ^ |
| | 1 | Check power | Check that the blue LED is either lit continuous or blinking | | | 1 | Power | Check that the blue LED is either lit continuous or blinking | |
| | 2 | Check USB connection | The modem must be connected to USB, and visible in the Settings -> GSM modem menu | | | 2 | USB connection | The modem must be connected to USB, and visible in the Settings -> GSM modem menu | |
| | 3 | Simcard status | Check the SIM Status in the menu, it must show "Ready". It will show "SIM not inserted", or "PIN required", or "PUK required" and more related errors when there is a problem. Please refer to the [[venus-os:gx-gsm#sim_status|SIM Status list]] for details. | | | 3 | Simcard status | Check the SIM Status in the menu, it must show "Ready". It will show "SIM not inserted", or "PIN required", or "PUK required" and more related errors when there is a problem. Please refer to the [[venus-os:gx-gsm#sim_status|SIM Status list]] for details. | |
| | 4 | Signal strength | 1 bar minimum for VRM logging, 2 or 3 bars are necessary for a working remote console | | | 4 | Signal strength | 1 bar minimum for VRM logging, 2 or 3 bars are necessary for a working remote console | |
| An [[venus-os:gx-gsm#accessory_antennas|outdoor antenna]] typically increases received signal by 15 dB to 25 dB. | An [[venus-os:gx-gsm#accessory_antennas|outdoor antenna]] typically increases received signal by 15 dB to 25 dB. |
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| Note that when the GX Device is already connected to Ethernet or WiFi, these have priority over the cellular connection. Even when the available Ethernet or WiFi connection does **not** have a good connection to the internet. There is **no** automatic detection in place which in such case switches over to the GX GSM. In more technical language: when the cellular data connection is active, it is configured with a high routing metric. This way, the Linux kernel prioritises Ethernet or Wifi when these are available. | Note that Ethernet and WiFi connections have priority over the cellular connection. Even when the available Ethernet or WiFi connection does **not** have a good connection to the internet. There is **no** automatic detection in place which in such case switches over to the GX GSM. In more technical language: when the cellular data connection is active, it is configured with a high routing metric. This way, the Linux kernel prioritises Ethernet or Wifi when these are available. |
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| This screenshot shows how all details look when everything is OK: | This screenshot shows how all details look when everything is OK: |
