I’m on 5.15.2 and the bluetooth warm boot issue is still here. The newer comments in that thread seem to suggest the same.
The last post seem to indicate there’s a patch that works. It would be nice if it made it in 5.15 at some point, but my money’s on it being released with 5.16.
I rebuilt a custom Arch 5.15.2 kernel with this patch and I can confirm bluetooth is now working properly for me, I was never able to get bluetoothctl to find a controller at all until this patch, warm boot, cold boot, didn’t matter. I’m using the vPro version of the AX210 as well.
Unfortunately I do not yet have a Framework (perhaps once it will be available in my country, and with a larger screen and more I/O), however as I generally upgrade my WiFi with modules I order from Fenvi’s AliExpress store (they also sell on Amazon and Newegg, to my country it just makes more sense to order these from AliExpress), I am currently rocking an AX210 on my Lenovo IdeaPad 300-15ISK, an AX200 with Fenvi’s FV-102 M.2 to standard PCIe adapter on my desktop (Asus Z97 Pro-Gamer at the moment), and the rest of the family are using 9260 modules on their laptops and desktops (the latter with FV-102 adapters).
I use Solus, and I can confirm from my testing that when the regressions occurred, it affected everything from the 9260 to the AX210 (there were both WiFi and Bluetooth issues, not necessarily at the same time, and not necessarily the same exact issues between the different models), at least on Solus, and currently on 5.14.16 on Solus, there are no issues currently with any of them.
Looks like the patch didn’t make it into the v5.16-rc1:
Well, for what it’s worth, I’m running Arch and used this AUR package to build a kernel off the latest linux-next sources, which have picked up the change. I tested sleep/wake and bluetooth works fine! Hopefully it’ll be in a regular kernel soon, but till then, I think this works. 
Follow-up from my earlier posts about microcode errors during rescan under load: I’ve managed to workaround by setting modprobe config options iwlwifi disable_11ax=Y. Doing so I’m getting no errors and performance is as expected, but obviously 802.11ax (aka WiFi 6) is disabled, but 802.11ac works.
I can confirm this workaround resolves the issues. I only have AC access points so am not missing anything right now by disabling AX. Nice find!
Follow-up from my earlier posts about microcode errors during rescan under load: Intel has provided a patch on the bug report that helps a lot if you need 802.11ax (so disabling it as in my other workaround is not ideal). See discussion on the ticket for more details.
This appears to be working now in 5.15.4 at least on Arch
This was interesting.
I am using Mint 20.2, Cinnamon Edition. I have never tried to use a custom kernel build until now. Mint has had this configuration item in their update manager to see what kernel is in use, which are available from the Mint channels and to change to a different one if desired.
I followed the directions & it tells me I am on 5.13.0-22 & does not even list anything at the 5.15 (which is where Xanmod is at). This is despite the fact that I never saw any errors & I even saw an update (also successful).
I am pointing this out because that information seems to be wrong. If we run inxi -S I actually get the following output:
System: Host: leuresthes-f Kernel: 5.15.7-xanmod1 x86_64 bits: 64 Desktop: Cinnamon 5.0.7
Distro: Linux Mint 20.2 Uma
So I don’t know where that GUI item gets its information but it is incomplete and can be wrong.
Also, why can’t I do a code block on this forum?
@August_Pamplona Yeah, it won’t show kernels installed from external repositories, but what it does show shouldn’t be wrong. Please note that “Installed” does not mean currently in use. If you were using a non-custom kernel, it would tell you which one was in use at the top.
Yes, you are right. If I remember correctly, the one currently in use will be marked as “installed” as well as “active”. Looking closely, I do not have any labelled like that (due to this being a custom kernel).
Use three backticks around the code block. Example:
#!/bin/bash
systemctl -q is-active openvpn@* && echo -n "🔑" || echo -n ""
everything is working well here on debian bookworm kernel version 5.15.0-3 including bluetooth and 150Mbps+ (fast.com test, so possible LAN is faster).
I’m dual booting Windows 11 and Fedora, I was having some problems with wifi not working in Fedora after rebooting from windows, what worked out was I had to turn off fast boot in Windows. link to a related article
Dang seems like I missed this thread
Has anyone seen the ax210 fail to come up with kernel 5.16 or 5.17?
I keep having to rmmod the iwlwifi kernel module, then modprobe it to get my WIFI to show up.
The vPro version of this card is still crashing on Fedora and Arch for me. Arch, I have to restart iwd when coming back from sleep or booting up, where with Fedora, I had to manually remove some firmware to get the kernel to load a subpar (buggy, slow, etc.) version.
It works, just not well. I don’t see any activity upstream for this either.
I don’t believe there is complete kernel support for the vPro version. I think the vPro requires some proprietary software for some of the features to work properly as well, for which I am not sure there is a Linux equivalent.
If you don’t need vPro for work, the non-Pro would be the way to go.