WBE660S und NWA55AXE Kernel Panic after Patch 4

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Chris888
Chris888 Posts: 74 image  Ally Member
First Comment Friend Collector Second Anniversary Community MVP
edited May 12 in Wireless

Hi,

since Update to Patch 4 on my WBE660S and NWA55AXE i see a lot of kernel panics.

Acces to admin is enabled, if you want to have a look.

Last time: 2026-05-10 01:44:31Zyxel-Indoor660SystemDevice is rebooted by kernel panic!

I can´t see any usefull entry in log before.

Thanks for any idea.

Christian

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All Replies

  • Andy77FL
    Andy77FL Posts: 4 image  Freshman Member
    First Comment
    edited May 11

    Hi,

    I think I have the same issue. Upgraded one of my NWA50AX to v7.10v4. I now get daily reboots. The log shows “2026-05-10 09:33:24 Device is rebooted by cold start!” with no other error messages.

    Diagnostic attached.
    =+=removed by Zyxel_Melen==

    Andy

  • Chris888
    Chris888 Posts: 74 image  Ally Member
    First Comment Friend Collector Second Anniversary Community MVP

    Maybe as an idea: I saw some entries "NTP Server was not reachable, Update failed"

    So i switch "pool.ntp.org" to "de.pool.ntp.org". Since this ntp-updates runs every 6h successfull.

    And no further kernel panics since 24h…keep my fingers crossed.

  • Andy77FL
    Andy77FL Posts: 4 image  Freshman Member
    First Comment

    It's worth a try. I've done the same. If it still fails I will disable NTP updates for now.

  • Zyxel_Melen
    Zyxel_Melen Posts: 4,835 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    edited May 11

    Hi @Chris888

    Thanks for the privilege and timestamp.

    We are checking on it. If this issue happens again, please also help to collect the diagnostic file with me.

    How to collect the Nebula AP diagnostic info by GUI? — Zyxel Community

    Zyxel Melen


  • Zyxel_Melen
    Zyxel_Melen Posts: 4,835 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @Andy77FL

    Thanks for the diagnostic file. We are also checking your case. Will update you once I get further information.

    Zyxel Melen


  • Chris888
    Chris888 Posts: 74 image  Ally Member
    First Comment Friend Collector Second Anniversary Community MVP

    I created the diagnostic file last weekend and can upload it.

    Please send me a privat message how to send you the file.

    Thanks!

  • Andy77FL
    Andy77FL Posts: 4 image  Freshman Member
    First Comment

    Changing the NTP settings including disabling NTP did not help. I'm still getting random reboots.

  • Zyxel_Melen
    Zyxel_Melen Posts: 4,835 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @Andy77FL

    We checked the diagnostic file and found there are all "Device is rebooted by cold start!".

    Device rebooted by cold start means the power was cut. Please check the uplink PoE status or the power adapter for the power stability.

    Additionally, kernel panic will come with "device rebooted by warm reset" log.

    Zyxel Melen


  • Andy77FL
    Andy77FL Posts: 4 image  Freshman Member
    First Comment
    edited May 15

    Thanks. I have swapped out the power supply for a spare. I will report back if the problem is solved or not.

    Edit: New PSU solved the problem. Thanks.

  • Chris888
    Chris888 Posts: 74 image  Ally Member
    First Comment Friend Collector Second Anniversary Community MVP
    edited May 14

    Unfortunately NTP didn´t solve the problem. Today again a freeze….send you my diag data.

    I have to powercycle the wbe660s to solve it.

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