45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
## Dell Latitude E5*50 Linux support
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Tested on my Dell Latitude E5450 (late 2014) with Fedora 21 64bit, BIOS A02.
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### WWAN module
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Dell Latitude E5*50 laptops could have a "Dell Wireless 5809e Gobi™ 4G LTE Mobile Broadband Card" WWAN module installed. This WWAN device is based on the Qualcomm Gobi™.
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| Name | Dell Wireless 5809e Gobi™ 4G LTE Mobile Broadband Card |
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| ID | 413c:81b1 |
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| Kernel module | qcserial |
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| Tested kernels | 3.17, 3.16 |
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The device id of this Gobi™ module is still missing from the ```qcserial``` devices table, so I created a udev rule which loads the ```qcserial``` module, switchs the ```bConfigurationValue``` from 2 to 1** and adds the new device id ```413c:81b1``` to the ```qcserial``` driver.
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** By default the device is loaded in the ```cdc_mbim``` mode (see https://www.kernel.org/doc/Documentation/networking/cdc_mbim.txt) instead in the classic serial modem mode.
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#### GPS ####
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To start the GPS
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```bash
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echo "\$GPS_START" > /dev/ttyUSB0
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```
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To stop the GPS
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```bash
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echo "\$GPS_STOP" > /dev/ttyUSB0
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```
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In the ```bin``` folder you can find an utility (```gobigps```) to easily start and stop the GPS. To be able to use this utility as normal user (more in general, to use the GPS) the user must be member of the ```dialout``` group.
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You can check if the GPS is running with a simple ```cat```
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```bash
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cat /dev/ttyUSB0
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```
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or using _QGIS_.
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Work is still in progress!
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