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ODROID-XU4 USER MANUAL
Blue LED not flashing or glowing
If the blue LED is not flashing or glowing at all, it is likely there is
something wrong with the image being booted. Check the following:
• Ensure the boot media is inserted properly in the receptacle on
the XU4 and that the boot media switch (SD/eMMC) is in the proper
position.
• Retry flashing the boot media with the downloaded image.
• If it still does not boot up, repeat the whole process, starting
with re-downloading the image from the website.
• If these attempts are not successful, create a post on the
, which may result in an
approved RMA.
Blue LED solid glowing
If the blue LED is not flashing or glowing at all, something went
wrong with the image writing or the card is not correctly inserted. Try
to download, extract and write the image again. If that doesn’t solve
the issue, try downloading and flashing a different image.
Mouse/Keyboard not working
Ensure that it’s correctly plugged in, or try a different USB port.
You can change it while the XU4 is running.
No desktop image
Be patient, since some SD cards require several minutes to boot,
and anywhere from 30 seconds to 2 minutes to show the first image.
Verify that the HDMI cable is correctly plugged in, and edit the boot.ini
on a PC and select the correct resolution (see Chapter 1 for details).
Some HDMI cables have compatibility issues, so make sure to
use an official Hardkernel HDMI cable. Some monitors have non-stan-
dard EDID functions. In this case, you need to select the non-EDID
mode in the ODROID configuration utility.
Some cables have a shorter plug, and it may be necessary to
remove the plastic case for a better connection. If there is a USB host
port on the monitor, connect a USB cable from the ODROID to the
monitor, which creates a ground path between the TV and the device.
Add a short jumper wire between the outer casing of the HDMI and
USB ports to create a ground path.
On the next page the series of steps that should be followed in
order to troubleshoot issues is outlined in detail. Before requesting an
RMA, research the relevant forums and verify that a solution or work-
around doesn’t already exist for your issue.
If your issue has not been previously encountered by anyone,
Chapter 2
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