FAQ

Welcome to SINTRONES  FAQ section. Seek answers to the frequently asked questions here.
If you are unable to locate the information you require, please complete our FAQs form, and we shall expeditiously attend to your inquiries.

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Q
How do I check LTE/5G module status in Linux?
A

You can verify whether the LTE/5G module is detected by the operating system using the following commands.

  • Check USB devices:
lsusb
  • Check PCIe devices (if applicable):
lspci
  • Check modem devices:
ls /dev/ttyUSB*
  • For ModemManager-based systems:
mmcli -L
  • Display modem information:
mmcli -m 0

If the module is detected successfully, modem information such as IMEI, SIM status, and signal information should be available.

 

Notes

  • Verify the SIM card is installed correctly.
  • Verify the antenna is connected properly.
  • Verify the module is supported by the operating system and BSP version.
Q
How do I verify camera detection?
A

For Linux-based systems, camera detection can be verified using V4L2 utilities.

  • List all detected cameras:
v4l2-ctl --list-devices
  • List available video nodes:
ls /dev/video*
  • Display camera information:
v4l2-ctl --all
If the camera is detected successfully, a corresponding video device will appear.

Notes

  • Verify camera power.
  • Verify GMSL cable connection.
  • Verify BSP camera support.
Q
How can I verify GPS signal reception?
A

You can verify GPS reception using the following methods.

  • Method 1: U-Center

Open U-Center and check:

  • Satellite View
  • Signal Strength
  • Fix Status

A valid GPS signal should display multiple satellites and a valid position fix.

  • Method 2: NMEA Output

Open the GPS COM port and verify NMEA messages:

$GPGGA
$GPRMC
$GPGSV

If NMEA data is continuously received, the GPS module is functioning correctly.

Tips

  • Move the antenna outdoors.
  • Verify antenna connection.
  • Confirm antenna type compatibility.
Q
What is the difference between Active and Passive GPS Antennas?
A
  • Active GPS Antenna

Built-in LNA (Low Noise Amplifier)

Better signal reception and long cable support

Requires antenna power from the GPS receiver

  • Passive GPS Antenna

No built-in amplifier

No external power required

Suitable for short cable installations

 

  • SINTRONES Recommendation

Standalone GPS/GNSS Modules (e.g., u-blox, DR modules) → Active GPS Antenna

LTE/5G Combo Modules with integrated GNSS (e.g., Quectel, Telit, Sierra Wireless, Fibocom) → Passive GPS Antenna

Note: Always verify the antenna type recommended in the module datasheet before installation.

Q
Does the VDB-811DR GPS module support G-Sensor (Accelerometer) functionality?
A

Yes. The GPS module integrates a 3-axis G-Sensor that can provide X, Y, and Z axis acceleration data for vehicle motion detection, impact monitoring, and driving behavior analysis.

The G-Sensor can be accessed through the SMBus interface.

 

1. Address Information

Address

Name

Description

0xEFA0

SMB_BASE_ADDR

VMB-3122 SMBus base address

0x3A

G_SENSOR_ADDR

Read: bit0 = 1, Write: bit0 = 0

 

2. Initial G-Sensor Register Definition

Hex

Dec

Name

Type

Description

0x31

49

DATA_FORMAT

R/W

Data format control.

0x2D

45

POWER_CTL

Power-saving features control.

0x2E

46

INT_ENABLE

Interrupt enable control.

 

3.  Calibration Register Definition

Hex

Dec

Name

Type

Description

0x1E

30

OFSX

R/W

X-Axis offset.

0x1F

31

OFSY

Y-Axis offset.

0x20

32

OFSZ

Z-Axis offset.

 

4.  X, Y, Z Data Register Definition

Hex

Dec

Name

Type

Description

0x32

50

DATAX0

R

X-Axis data 0.

0x33

51

DATAX1

X-Axis data 1.

0x34

52

DATAY0

Y-Axis data 0.

0x35

53

DATAY1

Y-Axis data 1.

0x36

54

DATAZ0

Z-Axis data 0.

0x37

55

DATAZ1

Z-Axis data 1.

Q
Ubuntu 26.04 installation freezes at "Get:5 file:/cdrom resolute/main amd64 Packages"?
A

Verify the system BIOS date and time settings. An incorrect RTC/BIOS clock may cause package signature validation, SSL certificate verification, and GNOME service initialization failures, resulting in the installer appearing to hang during package configuration.

Q
How do I perform a graceful shutdown when IGN is turned off?
A

On Windows systems, the ignition shutdown behavior is linked to the system power button action.

To allow the system to perform a graceful shutdown when IGN is turned off, please configure the Windows power button behavior as Shut down.

Steps:

  1. Open Control Panel.
  2. Go to Power Options.
  3. Select Choose what the power buttons do.
  4. Set When I press the power button to Shut down.
  5. Save the changes.

When the IGN signal is turned off, the system will trigger the configured power button action and allow Windows to perform a normal shutdown process.

Note:
If the power button action is set to Sleep, Hibernate, or Do nothing, the system may not shut down properly when IGN is turned off.

Q
What is IGN Only Mode?
A

IGN Only Mode is designed to keep the system power behavior controlled by the ignition signal.

When the system is shut down by software, the system may enter a standby state instead of being completely powered off.

If IGN Only Mode is enabled and the IGN signal remains active, the system will automatically power on again within a few seconds after software shutdown.

This behavior ensures that the system stays powered on as long as the vehicle ignition signal is present.

Q
How do I configure automatic startup after power recovery?
A

SINTRONES platforms support automatic system startup after external power is restored.

To configure this feature:

  1. Enter the BIOS Setup Utility.
  2. Navigate to:
    Advanced → AC Power Loss
  3. Select the desired behavior:
    • Power Off – The system remains powered off after power is restored.
    • Power On – The system automatically powers on when power is restored.
    • Last State – The system returns to its previous power state before power loss.
  4. Save the BIOS settings and reboot the system.

Note:
1. The available options and menu locations may vary depending on the platform model and BIOS version. Please refer to the product user manual for detailed instructions.

2. For platforms equipped with Ignition Power Management, the IGN signal must remain active (IGN ON) for the system to power on successfully after AC power is restored.

If the IGN signal is not present, the system may remain in the power-off state even when AC Power Loss is configured as Power On.

Please ensure that both the external power source and IGN signal are available when using the automatic startup function.

Q
How do I collect logs for troubleshooting?
A

Common diagnostic tools include:

 

Windows:

  • Event Viewer

Linux:

  • dmesg
    journalctl
 

Providing logs can significantly speed up troubleshooting.

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