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RT-BE92U Persistent Thermal Zone Faults

RicoSuave
Star III

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.

221 REPLIES 221

Lid
Star III

So I let the router update to 37523 today and after reboot it was back at 37506 and the later firmware no longer being offered. Have ASUS pulled it due to an issue I wonder? It is referred to on Google search below but no longer on their site.

Lid_0-1743161168613.png

 

On 37506 had CPU cores disappearing.  The router rebooted and took a really long time to come up.  When it did there was only core 1 enabled.  I reset it and the cores came back but didn't survive a reboot.  I had to install 37522 which is probably the beta for 37523.  I'm not sure why they pulled this firmware. 

3.0.0.6.102_37523_bug.png

37523 kills 3 cores out of 4 cores, but let the core 1 survive.

If you power off by pressing the power button, and power on, then you will see 3 cores are gone.

Does router team lost someone important? I don't understand how this happens.

Lid
Star III

@cowhow where did you get 37522 from? I've been emailing the contact I had at ASUS but she's stopped replying!  I guess they never heard of testing before releasing this junk onto us 😞

That's what I did.  I have been testing beta builds for Asus and this was the latest one they sent me.  I'm sure there's newer builds available now as it's been a week or so since I received this one.  And it's not just you they have stopped replying to.  I haven't heard from them now since the email about this build.