Crash under load mt76x8

Installing and Using OpenWrt
#1

Edit: or if doesn't crash I just don't get the full speed

I have to limit download to 4100kbps (41mbps) on SQM because my router crashes if above it.
Router - TL-WR850N v2 (mt76x8) Openwrt 22.03.2

Packages (firmware compiled using firmware selector)

Removed - opkg, ca-bundle, uclient-fetch
Added -

  1. luci
  2. luci-app-wireguard
  3. luci-app-pbr
  4. stubby
  5. qosify(or luci-app-sqm)
  • Router worked great without any packages and could give 60mbps without crash.
  • Stock Firmware gave 60-80mbps. 100+ on good days.
  • Laptop connected to ISP Modem directly sometimes give 90-130mbps (advertised speed is 50mbps).
  • That maybe because router WAN port limits speed to 100mbps.

Also, I switched to from 40Mhz to 20Mhz and Manually selected a channel.

#2

What are the symptoms of your crash? Freeze? Reboot? something else?

Do you have another power adapter you can try (with the same or ideally higher current capacity)? Sometimes a failing or marginal adapter will cause the device to brown-out during high bandwidth periods.

#3

What are the symptoms of your crash? Freeze? Reboot? something else?

WiFi disappears from clients for 2-4 minutes. But light on router doesn't change.

Do you have another power adapter you can try

Yes, I did. But maybe both are broken

(with the same or ideally higher current capacity)?

What specs? Original is 9VDC@0.6 A. So double the Amps ?

Sometimes a failing or marginal adapter will cause the device to brown-out during high bandwidth periods.

How to check that ?

Also Added more detail to main thread.

#4

What about wired? Does the wired networking also stop functioning, or is it okay?

If you have something with more capacity, yes, double would be great.

It's hard to check directly, but the larger power adapter would be a good start for at least the external supply.

This may be a bit intensive for your device.

#5

So the problem is OpenWrt needs more power than stock FQ. That cuts down speed.
Using any packages cuts down speed.
QoSify/SQM even when stopped crashes router under load. Also I need to limit my speed.

I tried No to these 4 packages
image

#6

This may be a useful bit of information:

#7

Another thing to check is if the uptime on the device is getting reset. If it goes back to zero (and by the time you check is a pretty short time), that does indicate a crash + reboot, but if the uptime is not getting reset, the problem is not a full crash + reboot.