[Solved] My ClearFog CX LX2 won't boot (RAM not seated properly)

NXP LX2160
1

My LX2160 has been powered off for quite a while (as I have not had the equipment to build images).

Edit: it’s board rev 2.1 (and it used to boot back in 2022).

Yesterday I attempted to set it up again, writing an up-to-date image to the SD-card and trying to boot it.

However, it seems it doesn’t get very far in the boot-process; as far as I understand, it doesn’t look like U-Boot is run …

Attempting to boot g472ee20d7

NOTICE: BL2: v2.10.0 (release):lf-6.6.52-2.2.0-20-g472ee20d7
NOTICE: BL2: Built : 20:38:26, Aug 24 2026
NOTICE: UDIMM BL8G32C16S4B.8FE
NOTICE: DDR4 UDIMM with 1-rank 64-bit bus (x8)

NOTICE: 16 GB DDR4, 64-bit, CL=19, ECC off, 256B

Attempting to boot gc65b6daa8

NOTICE: BL2: v2.10.0 (release):lf-6.6.52-2.2.0-16-gc65b6daa8
NOTICE: BL2: Built : 11:40:50, Aug 25 2025
NOTICE: UDIMM BL8G32C16S4B.8FE
NOTICE: DDR4 UDIMM with 1-rank 64-bit bus (x8)

NOTICE: 16 GB DDR4, 64-bit, CL=19, ECC off, 256B

I've tried downloading and writing these pre-built images ...

lx2160a_rev2_cex7_clearfog-cx_multi_2000_700_2600_8_5_2-04adb82.img
lx2160a_rev2_cex7_clearfog-cx_multi_2000_700_2600_8_5_2-871e4ba.img
lx2160a_rev2_cex7_clearfog-cx_multi_2000_700_2600_8_5_2-92118fa.img
lx2160a_rev2_cex7_clearfog-cx_multi_2000_700_2600_8_5_2-dba993a.img

-I wonder if it could be the backup battery that ran out of power - or could it be something else ?

Edit2: I measured the battery voltage, it said 3.0V, so that would not be at fault.

So I took out the top RAM module and re-inserted it, and now the LX2 boots - and I’m happy again. :slight_smile:

2

Solution was … Take out the RAM and insert it back in.

-So if the boot stops right after the DDR is detected, this is worth trying.

Of course, it’s probably also a good idea to check the battery voltage if the unit has been powered down for a long time (but the MuRata battery that Solid-Run provides is a good quality battery, so it should last for many years even without power).