Can't connect GL-E750 to Synology router (WPA3-SAE)

GL-E750, firmware version 4.0, 0326release1.

Synology: RT2600ac

I use my GL-E750 in LAN mode connected to my laptop, and connect the router to public wifi. As far as I know this can only be done using LuCI, in Network > Wireless. I use the Mudi for public wifi, but I’d like to connect to my own wifi at home to test stuff. For public wifi I normally need to use PEAP for EAP-Method and EAP-MSCHAPv2 for Authentication. My home wifi uses WPA3-SAE. I always keep management frame protection disabled. I scanned using radio0 (Qualcomm Atheros QCA9887 802.11acn).

My synology router’s wifi works and I can connect to it with my phone and laptop. No MAC filtering.

I attempted to troubleshoot using an LLM. I ssh’d into Mudi and learned there are probably firmware incompatibility issues preventing me from using WPA3. Here’s my chat summarised by the AI:

The kernel message shows the ath10k driver loaded firmware but attempted to set a radio parameter the firmware rejected ("pdev param 0 not supported by firmware"), meaning a driver/firmware feature mismatch; that failed initialization prevents the wireless stack (wpad/hostapd) from controlling the radio and causes association/auth errors. Common fixes are using matching kernel/kmod and ath10k-firmware packages (or upgrading OpenWrt), switching to a compatible firmware build, or temporarily disabling the specific driver feature

I hope I’ve given enough info about my use case, but I’m probably missing some stuff. I’ll try changing my Synology router to use WPA2 instead temporarily and see if that fixes it, but it’s only a temporary fix to rule out other issues.

After ruling out a bunch of things, I narrowed it down to one issue: the password. I was using the following password:

#mdf`U>5},"~)#.-

It turns out, one or more of these symbols cause the inability to connect. I suppose OpenWRT mis-handles some characters, maybe escape characters. Not very good security practice, and I’ve wasted a good chunk of time on this.

Hi,

Thank you for your feedback—we’re able to reproduce the issue.
We’ll have our R&D team investigate and work on a fix.

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