
21 Troubleshooting
21.1 How to detect that the internal SD card is damaged?
If the mvBlueLYNX-X does not boot, the internal µSD card
could be damaged or
1.
important files were deleted.
2.
To check whether the internal µSD card was damaged, please try an external one with the correct partitions
and bootloader.
The mvBlueLYNX boots first from the external card slot then from the internal one. After you have tried to
boot from the external card and the mvBlueLYNX-X boots correctly, there is a problem with the internal card.
Now, it is possible to recover the card. There will be a recovery image on our website soon. The recovery
image is a
packed image with a
1.
script.
2.
User software which was installed on the mvBlueLYNX-X will be deleted during the recovery!
21.2 My USB 2.0 hub doesn't seem to work with the
mvBlueLYNX-X?
You should use a powered USB 2.0 hub. Most hubs should work. The following models have been tested and
are used at MATRIX VISION:
D-Link DUB-H4
•
Belkin 7-Port Powered Mobile Hub, Type: F5U701PerBLK
•
21.3 I've got no keyboard, is there a virtual one?
Use the menu item:
Mouse left click on the desktop.
1.
Then select
Applications --> Accessories --> Ol'Good Keyboard
2.
The application xkbd will be started.
If the repeat key timeouts for the virtual keyboard are much too small, you can change them like this:
Choose the keyboard layout you are using and edit the appropriate file in this directory:
/usr/share/xkbd/
E.g.
/usr/share/xkbd/en_US.qwerty.xkbd
1.
Add the following 2 lines it the end of the
<global>
section:
repeat_delay 20
repeat_time 10
2.
MATRIX VISION GmbH
22 April 2016 Version - 1.49
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