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[TM-AC1900] Unable to change Router Login Name while in AP Mode?

mgeoffriau

Occasional Visitor
Background -- preparing to replace my RT-AC68R router with a dedicated pfSense router plus a couple AC68's in the new AiMesh mode.

I picked up a TM-AC1900 to use as my second AC68, reflashed it to ASUS-WRT, then used the CFE as recommended by goggles99 in the AiMesh thread, then installed the latest ASUS beta (9.0.0.4.382_19612). The plan was to set this up as an AP for now, so that I could minimize downtime when I stand up my pfSense router (eg, I'll just plug this right in and have my WiFi networks back up within a couple minutes).

All of this went great, until...I tried to change the Router Login Name on it. Every other change has worked fine, changing modes, adding SSID's, adding the Guest Networks, changing the router Password.

But when I change the Router Login Name, it goes through the percentages as if it's saving the change, then a dialog box pops up stating I should use the new Login Name on my next login, and it drops me back on the Administration > System page, with the new Login Name showing.

If I log out, and attempt to log back in with the new name, it fails. If I use the original "admin", it logs in successfully, but weirdly, still shows the new Login Name rather than "admin" on the Adminstration > System page.

I've tried a few times now with the same result. I've tried closing the browser before I log back in after the change; I've tried logging in with a different browser after the change. Same behavior every time. I've seen a few threads where usernames over 15 or 16 characters can break the login screen, but this doesn't fit what's happening. My new Login Name is 10 lower case letters, and the password isn't changing. Moreover, it's not that it completely breaks the login, it just doesn't authenticate using the new Login Name.

Any thoughts? Anyone seen this before? The things I can't completely account for:
  • TM-AC1900 -- Possible issues from using an AC68U CFE and Firmware on a TM-AC1900
  • ASUS Beta -- Beta firmware, unresolved issues

tldr: Changing Router Login Name appears to save successfully, and admin page shows new name, but authentication only succeeds with original "admin" name.
 

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