RT-BE92U Persistent Thermal Zone Faults

[RicoSuave]

First post here so bear with me if I miss anything. Since purchase, my RT-BE92U has been plagued with the same issues others have posted here. Up until the new firmware version dropped, I was having constant problems with network stability. I am currently running the latest firmware version (3.0.0.6.102_37435) and a lot of the issues seem to have been resolved except for one. Before the firmware update, I was seeing intermittent thermal zone errors in the system log. Since applying the update, I am consistently getting the following errors that appear every 3 seconds exactly:

Jan 4 18:29:52 kernel: read_bpcm_reg_direct_keyhole: Wait for completion failed, devAddr 0x3, offset 24, idx 2
Jan 4 18:29:52 kernel: thermal thermal_zone0: Failed to get RAIL 0 temperature, ret=256
Jan 4 18:29:52 kernel: thermal thermal_zone0: Failed to get temperature, ret=-1
Jan 4 18:29:52 kernel: thermal thermal_zone0: failed to read out thermal zone (-1)

On occasion, the errors coincide with a drastic decrease in wireless network performance. Under normal conditions, when connected to the 6GHz network, my wireless network download speed averages around 1100Mbps. This will drop to a nearly unusable 2-3Mbps. The 2.5GHz and 5GHz networks also see a decrease in speed to around the same 2-3Mbps. Wired clients seem unaffected. Once I perform a hard reset to the router, it seems to correct the speed issue for a while, but the thermal zone errors continue to persist. This seems to happen anywhere from once a week, to every day. Performing a hard reset isn't something I want to nor should have to keep doing to correct the issue every time it happens. Please let me know if there is anything else I can do to stop this from happening. I am getting very close to returning this router and exchanging it for a different brand. Thanks.

[fairfacts]

I am on this one: 3.0.0.6.102_37506-g3caded7_1090-gca005_BB0B

had to download from here ASUS RT-BE92U｜WiFi 7｜ASUS USA myself unpack and apply it (the auto update didnt pick it up).

Solved thermal issues.  Much easier to read logs now and I have several days of logs. Still seeing some issues :

These fairly regularly: Mar 6 14:46:04 kernel: WLC_SCB_DEAUTHORIZE error (-30) and slightly different:

ar 5 06:22:14 kernel: WLC_SCB_DEAUTHORIZE error (-30)
Mar 5 06:22:14 kernel: WLC_SCB_DEAUTHENTICATE_FOR_REASON err -30

which dont seem tied to a specific MAC address like these: Mar 6 14:24:07 wlceventd: wlceventd_proc_event(706): wl1.2: ReAssoc XX:XX:XX:XX:XX:XX, status: Successful (0), rssi:-71

Mar 6 14:46:04 wlceventd: wlceventd_proc_event(656): wl0.2: Deauth_ind XX:XX:XX:XX:XX:XX, status: 0, reason: Disassociated due to inactivity (4), rssi:-60

Which I believe are normal

My uptime is only 1 day 16 hrs so I think  reboot happened when I wasnt looking and once again the router lost NTP (log has entries for dec 31 19:00:34 and I cleared the log after the patch upgrade so something happened to bounce the device:

Mar 4 22:12:09 wlceventd: wlceventd_proc_event(733): wl1.2: Assoc XX:XX:XX:XX:XX:XX, status: Successful (0), rssi:-71
Dec 31 19:00:34 kernel: klogd started: BusyBox v1.24.1 (2025-02-25 15:09:35 CST)
Dec 31 19:00:34 kernel: Linux version 4.19.294 (root@asus) (gcc version 10.3.0 (Buildroot 2021.02.4)) #1 SMP PREEMPT Tue Feb 25 15:13:59 CST 2025
Dec 31 19:00:34 kernel: ARM_SMCCC_ARCH_WORKAROUND_1 missing from firmware
Dec 31 19:00:34 kernel: Kernel command line: coherent_pool=4M cpuidle_sysfs_switch pci=pcie_bus_safe console=ttyAMA0,115200 rootwait rng_core.default_quality=1024 mtdparts=brcmnand.0:2097152(loader),265289728@2097152(image) root=/dev/ubiblock0_6 ubi.mtd=image ubi.block=0,6 rootfstype=squashfs
Dec 31 19:00:34 kernel: bootloader version U-Boot2019.07(02/25/2025-15:11:46+0800)50404p3@523100
Dec 31 19:00:34 kernel: BoardId [RT-BE92U], NVRAM_ULBOARDSTUFFOPTION=0
Dec 31 19:00:34 kernel: size of sk_buff 576
Dec 31 19:00:34 kernel: offset of cb in sk_buff 400

etc and continuing until NTP is reconnected and the time resets correctly

and this error :

Mar 6 11:40:06 acsd: wl1 received event: tx pkt delay suddently jump
Mar 6 12:20:52 acsd: wl1 received event: tx pkt delay suddently jump