RT-BE92U Persistent Thermal Zone Faults
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01-04-2025 06:46 PM
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.
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01-06-2025 07:38 PM
Hi @Lid ,
Thank you for your reply!
If you have already submitted a problem report, please kindly provide the following information via private message so we can forward it to our backend team for further investigation:
- Product serial number
- Problem report submission time
- Email address used in the problem report
- Time when the issue occurred
- Device MAC address
- Current network setup diagram
Thank you for your cooperation.
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01-08-2025 06:20 PM
PM sent
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01-09-2025 01:38 AM
Hi @RicoSuave ,
we have sent you a private message.
Please assist us by checking the message so that we can provide further assistance.
Thank you for your cooperation.
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02-12-2025 02:29 PM
Could you kindly send me the beta firmware for BE92U to resolve the Thermal Zone issue?
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2 weeks ago
Hello, I’m experiencing all of these issues as well. The first router I bought instantly had these issues, even after I upgraded it to Firmware version 3.0.0.6.102_37526. After multiple factory resets it was still a lost cause and I returned it.
I bought a replacement one, and right out of the box I installed the 9.0.0.6.102_37803-ga2dcc92_1207-g0fc42_BB0B beta firmware. It runs 50% better but still has the similar symptoms of the poster in this forum, mostly dropouts. I have an iPhone 16 Pro Max and it seems the MLO function of the router is still buggy too.
When is a replacement firmware coming, as it has been 2 weeks since the last buggy one mentioned (3.0.0.6.102_37526). Also, the Merlin firmwares are Beta and not a full release candidate; they are buggy too with the dropout issues.
Thank you!
