[exaveal]

Hi all,

my Linksys WRT 1200 AC v1 running firmware DD-WRT v3.0-r50500 (10/13/22) does make a lot of problems.
Problems began beginning this year, so I started to update the firmware. I am now running on the latest dd-wrt firmware I found here: https://dd-wrt.com/support/other-downloads/?path=betas%2F

My configuration crashes. The router does reboot and resets automaticall to factory defaults.
All I'm doing is:
- set user & password
- enter my ISP data (Germany, Telekom VLAN7)
- change Router IP to 192.168.101.100/24
- DHCP Start IP address to 192.168.101.101
- set Static DNS


That's it. Takes 15-30 minutes, router crashes and restarts again with default settings.
CPU is about 75C°


What can I do? Shit, it always was stable but now I have that much problems.

[bushant]

Possible power supply failing.
Try another if you can find it.

Default is for router to factory reset after 5 failed attempts to boot.
Can be disabled at Administration->Management->Bootfail Handling
to see what difference it makes.

[exaveal]

Can I see anything in the logs regarding power supply problems?
Just for my understanding: You mean It tries to reboot 5 times with my configuration because of power supply problems and the factory defaults are working then? Do they need less power?

[dale_gribble39]

The way the LAN IP and DHCP pool is handled has changed. How many DHCP clients did you allow for with a start IP of x.x.x.101? I believe the new default is 190, and that will crash it.

[exaveal]

Only 98:


I deactivated "factory reset after 5 failed attempts to boot". I will update tomorrow if it worked overnight.

In the logs I just found some errors, but I don't think this is regarding the factory resets:

[dale_gribble39]

Autochannel on wifi and a single static DNS server? Maybe we should take a look at all of your configurations. While 75°C is within specs, I would consider a fan on top of the router case pulling air through it.

[blkt]

If you are using the Apply button avoid it, instead use the Save button when necessary then reboot when finished.

[exaveal]

Morning,

so it did not work. I woke up and again, router is on default settings.
So can the power supply be a problem? I do not have another one fitting to test. Is it worth trying?

The Wifi Auto Channel is just because I set up the config complete new (not restoring settings from my previous configurations on older builds). Wifi I haven't set up yet completely.

Perhaps it's the only solution left to have a look on complete config. How can I show you the config best way? I have screenhosts of almost all pages. Because I made a "visual" backup
Or is there any way to check the logs? Not possible if always resetting to defaults, right?

Thx all.

[blkt]

If a known good firmware develops problems, and a reconfiguration does not fix, seems to be a hardware failure.

[the-joker]

And the obvious clearing browser cache? ctrl + f5 would help somewhat some gremlins but not the reset itself to defaults.

A serial connection left open during a longer period would probably shed some light, perhaps also setting console_debug=1 and setting up a syslog server to receive the logs elsewhere and then would show any points that it starts to fail (obviously otherwise logs are lost) the server would need to be on a external connected machine.

serial log would be better especially if its a continuous log during the points the router reboots. By default 5 failed reboots = reset to defaults, but we need to know why it fails to boot that many times.

[bushant]