(solved) RTW: ERROR [HALMAC][ERR]Dump efuse in suspend about 88x2bu-20210702 HOT 10 CLOSED

try rtw_switch_usb_mode=1 in '/etc/modprobe.d/88x2bu.conf'

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I tried that, it just breaks it. It crashes multiple times and gives up, with no wifi interface. Anyone have any other ideas? Or should I just disregard the error messages on startup?

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Is the USB hub powered?

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Good question :) The hub is buried inside a magic mirror, and I don't remember if it was a powered hub. I'm really trying to not have to open it up. But I don't think it's a power problem because once it gets started it works fine. I just get the initial two or three crashes at startup, and then it initializes and works after that. Maybe I should just leave well enough alone and forget it.

from 88x2bu-20210702.

The errors are consistent with the Wi-Fi adaptor failing during boot. The initial current draw on these adaptors is high. Having an unjuiced hub isn't going to help. The fact that it eventually works suggests a power supply issue.

It's wrong to assume a USB port can power a hub with a load of gadgets hanging off it. Been there; learnt that.

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Hi @mlewus

I tried that, it just breaks it. It crashes multiple times and gives up, with no wifi interface.

Ouch. Not a good idea to force USB3 when the adapter is not in a USB3 capable port.

Or should I just disregard the error messages on startup?

This. I did not see any unknown entries and I did not see anything that looked like an operational bug report. Realtek's logging with this driver is not going to win them any prizes. I suggest:

rtw_drv_log_level=0

...and press on. This is actually a pretty good driver for a Realtek out-of-kernel driver but that **** it spews in the log is just noise. I ignore it.

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try rtw_switch_usb_mode=1 in '/etc/modprobe.d/88x2bu.conf'

I think I meant to write 'rtw_switch_usb_mode=0'

Apologies.

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i’ll try mode 0 but failing that, as long as it keeps working I’ll just ignore it.

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Hey @PieGuy314

Long time, no see. How is it going? I'm still waiting for you to rewrite the logging code in this driver... he he

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Changing the USB mode from 2 to 0, no effect. But other than startup messages the adapter is reliable, which is way more than I can say for the internal Wi-Fi chip on the pi 4. That one was crashing on a daily basis, requiring me to rmmod/modprobe the driver to get it back up. This is way better. Thanks for all the work will you guys put into this!

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