LPC bus degradation issue -- symptoms if I don't update BIOS?

hungrycactushungrycactus New Member Posts: 4

Hi there!

I bought a a few Up2 boards last year, and they have been running solid with Centos running in command line/non-GUI for half a year. However a few months ago, one by one they started having symptoms of locking up randomly, every few days/weeks -- no video signal, ethernet lights blinking but not responding, blue power light on.

I just read that Bios v3.0 fixes the LPC bus degradation issue (https://forum.up-community.org/discussion/3900/intel-bug-for-alla-cpu-intel-cele4ron-n3350-j3355-j3455-e-pentium-n4200). My Up2's are only on BIOS v 2.1 (without the fix). Could this be related? Does the LPC bus degradation issue cause system crash/freeze?

I will surely install the BIOS patch now, but did I already cause permanent damage to the CPU/LPC/system?

Your insight is greatly appreciated.

-Ethan

Comments

  • DCleriDCleri Administrator, AAEON Posts: 840 admin

    LPC bus is not used on UP Squared, but the new BIOS versions improves stability and comes with updated security patches.

    I strongly suggest to update but I don't think the board is damaged in any way

  • hungrycactushungrycactus New Member Posts: 4

    Thanks @DCleri --

    If the LPC bus is not used on the Up2, then the lockups I am seeing must be caused by something else?

    I still need to explain to my team lead why the Up2 boards seemed to have been fine for half a year, and out of the blue they started having symptoms of locking up randomly, every few days/weeks. The Centos 7 hasn't been touched for half a year...that's why I am worried there is some hardware degradation whether it is related to LPC bus or not. Do you have any other insight as to why I am seeing the same locking issues across three Up2's?

    -Ethan

  • DCleriDCleri Administrator, AAEON Posts: 840 admin

    Hi @hungrycactus

    I don't believe it is a hardware degradation issue.

    I don't know the setup, if indoor or outdoor, location, power supply, plus also the software after long time can expose issues not visible at first.

    It is important that you collect logs and more information to help you debug the issue you are facing.

  • hungrycactushungrycactus New Member Posts: 4

    @DCleri --

    We have 4 sets of Up2's:

    • Indoor in server rack cooled environment
    • Power supply is the UP Squared power supply [email protected]
    • We have 4 USB devices plugged in (2x on the USB 3.0 ports, and 2x on the USB 2.0 breakout pin header cable). These are USB->serial cables, which I doubt use that much power.
    • Running Centos 7.7 with kernel 3.10.0_1062

    What logs can I start looking at?
    -Ethan

  • DCleriDCleri Administrator, AAEON Posts: 840 admin

    error logs and system logs that you can record to identify the issue when happening.

    Also that Kernel version you are using is really old and Apollo Lake Platforms were not supported with that version, so you might experience unexpected behavior.

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