@AurealNix - great effort and thanks for putting me in touch with Claude 5, I was just using Gemini and it was struggling a fair bit!! In fact I had just put this board on ebay as it was causing too much distraction so your last two posts looked hopeful. Sorry my spanish isn't that great so I'll stick with English. I was hoping to just put these 106 patch files directly into the userpatches/kernel/archive/sunxi-6.18 folder and then run compile.sh with USER_PATCHES=yes, but that didn't work as patch files in that location seem to be tempremental and it couldn't find a lot of the targets. I tried removing the ones with errors which didn't work either, so went down the route of adding running compile.sh with kernel-patch parameter then copying your sun55i-t527-orangepi-4a.dts into ./cache/sources/linux-kernel-worktree/6.18__sunxi64__arm64/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts to get a new patch file, but this failed to compile likely because it doesn't have the changes you made to the .dtsi and other files . It would be good to know how you and Claude were building the kernel - I can see in your README that you are doing it directly into linux 6.18.38 tree, whereas I was working out of a clone of armbian in github. I would like to spend more time on this but need to get onto the real reason I bought the board (an outdoor noise cancelling project) so I'm going to use another board in the meantime. Cheers

Hello, I am experiencing the same issue: CPU1-3 are offline, and they can't be activated by echo 1 > /sys/devices/system/cpu/cpu1/online or similar commands, the system is responding with "invalid argument" error. I did not notice this nuisance until last week. I would like not having to reinstall the hole system, because it is running my Nextcloud and some other home services. Is there any way to install a kernel that uses all 4 CPU, without having to reinstall the hole system? Will it work, if I just copy /boot from one of the older images onto the sdcard in use?

Now I attacked the issue from the clients side and tried to connect from a "real" (Debian) system. Client Syslog output on connect looks quite comparable, but on the "failing" AP I seem to have a DNS issue: ping and traceroute do not work from the client in that case (and work when I connect to the "Bookworm AP"). From the AP computers I can alway resolve hostnames. So I will investigate this further (on Bookworm the resolveconf service is used, on Trixie systemd-resolved: so I assume an issue in the DNS setup of dnsmasq). I will not follow the "RADIUS" path anymore (for now), the brcmf_psm_watchdog_notify issue will also remain untouched (it is with me for a long time on the BPiPro now).

Perhaps here: https://issues.chromium.org/issues?q=status:open as xtradeb ppa is packaking service only. I don't think they do anything else that that.

I've seen this same issue with Discord, since March/April this year. Just going to https://discord.com/app (no login necessary) is enough to trigger it. From what I gather, this seems to be some sort of problem with the Chromium build Armbian uses (it appears to be the same build from the xtradeb ppa). This seems to happen on: 1. Raspberry Pi 4 on Armbian Ubuntu Noble 2. Some random Ubuntu VM ARM64 on Apple Silicon using Chromium from xtradeb/apps PPA 3. Dragon Q6A w/ Armbian Ubuntu Noble No workarounds seem to work. Turning off GPU acceleration, disabling sandboxing, etc. all make no difference. But it does not occur on: 1. Google Chrome 2. Chromium 145 or earlier ARM64 from Armbian or Xtradeb PPA, on all devices. Only 146 or later is affected for some reason 3. Linux Mint's Chromium x64 build 4. x64 Chromium snap package on Ubuntu I have not tested xtradeb PPA (or Armbian)'s x64 build of Chromium. Based on the above, I do not think this is an Armbian specific issue. Anyone have any ideas on where to report this?