AC Lite. It doesn’t need controller, it’s standalone. I configure it via the mobile app.

It’s a standalone AP. No controller. Two different SSIDs.

I’ve had it running now for 2 hours and of course now it works. The only change since last time is that I’ve reset the AP and did a firmware upgrade. Perhaps that fixed it…

There’s only a single DHCP server, a Pihole, which also serves as DNS. Switch B is a cheaper switch, so that may be the culprit. I use it for heavy downloading from my Xbox and that is never a big issue. Speeds fluctuate from 100 to 900mbps (my max) but that’s not necessarily a switch problem.

Yep, thanks for checking, there’s only 1 DHCP server on my network. I’ve just moved it back to behind switch B and will do more investigation when the problem occurs again.

I’ve just moved it back to behind switch B, will do testing as you suggest.

The switch doesn’t have POE, the Unifi AP does use POE via its own POE injector.

Thanks. I’ve recently reset it, it has its own IP via DHCP. I’ve just moved it back to behind switch B, will do testing as you suggest.

That is good to know! Will keep an eye on memory usage of immich. I really like it, so I’m reluctant to let it go.

Thanks heaps, that’s is very useful. Will connect monitor and keyboard and have a look.

I’ve uninstalled it, it’s an index/search tool. Don’t need it :D

Thanks, it’s so awesome to see so many useful replies here! If you are interested, I found some very weird things in the logs :( https://lemmy.nz/comment/6192604

Yeah think I’ll get a standalone WiFi smart plug, not connected to my Home Assistant, as a kill switch. But you’re right, it’s overkill.

I found some weird things in the logs, this goes beyond my knowledge :( See https://lemmy.nz/comment/6192604

Yeah tracker miner sounds dodgy. I’ve only installed Immich & Frigate on the box, and no dodgy repositories. It’s also auto updating. Will do research how to check for malware, thought that was a Windows only thing :D

Thanks, but a data center is probably overkill for my needs. I’ve got it power loss protected with a UPS, and that’s more than enough for us. Thanks anyway :)

I have a RPI, but of course that one can hang too. I’ll buy a simple WiFi smart plug, standalone, as a kill switch.

Thanks! Yeah it seemed to be an OOM issue, but based on my Kagi qualities it seems like an OS issue. But, it also has an error about the GPU. Normal memory usage is more than fine, so perhaps it was a one time thing. See logs: https://lemmy.nz/comment/6192604

Thanks mate. It was a bit of a rabbit hole, I found stuff about the watchdog package, and you can configure it to use the iTCO_wdt module, but I also read it was blacklisted, and then I just gave up. I posted somewhere else in the thread what lead up to the hang. And, I think I’ll buy a WiFi smartplug so I can remotely reboot everything; assuming the WiFi still works :D

Yes, thanks for that. Good point. I checked the logs, and minutes before it crashed I can see below in the logs. Seems like either a GPU error or out of memory error. I’ve deleted tracker-miner-fs as I don’t need it. It also shows a massive list of processes with their memory usage.

Feb 21 17:27:49 hppd600-g3 kernel: i915 0000:00:02.0: [drm] GPU HANG: ecode 9:0:00000000
Feb 21 17:32:43 hppd600-g3 kernel: 1305621 total pagecache pages
Feb 21 17:32:43 hppd600-g3 kernel: 16258 pages in swap cache
Feb 21 17:32:43 hppd600-g3 kernel: Free swap  = 0kB
Feb 21 17:32:43 hppd600-g3 kernel: Total swap = 1000444kB
Feb 21 17:32:43 hppd600-g3 kernel: 2065206 pages RAM
Feb 21 17:32:43 hppd600-g3 kernel: 0 pages HighMem/MovableOnly
Feb 21 17:32:43 hppd600-g3 kernel: 64196 pages reserved
Feb 21 17:32:43 hppd600-g3 kernel: 0 pages hwpoisoned

Feb 21 17:32:43 hppd600-g3 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=user.slice,mems_allowed=0,global_oom,task_memcg=/user.slice/user-113.slice/user@113.service/background.slice/tracker-miner-fs-3.service,task=t>
Feb 21 17:32:43 hppd600-g3 kernel: Out of memory: Killed process 833 (tracker-miner-f) total-vm:625676kB, anon-rss:3144kB, file-rss:4816kB, shmem-rss:4kB, UID:113 pgtables:280kB oom_score_adj:200
Feb 21 17:32:43 hppd600-g3 kernel: i915 0000:00:02.0: [drm] Resetting rcs0 for stopped heartbeat on rcs0

Yes, thanks for that. Good point. I checked the logs, and minutes before it crashed I can see below in the logs. Seems like either a GPU error or out of memory error. No idea what tracker-miner-f is by the way. It also shows a massive list of processes with their memory usage.

This goes beyond my knowledge :(

Feb 21 17:27:49 hppd600-g3 kernel: i915 0000:00:02.0: [drm] GPU HANG: ecode 9:0:00000000
Feb 21 17:32:43 hppd600-g3 kernel: 1305621 total pagecache pages
Feb 21 17:32:43 hppd600-g3 kernel: 16258 pages in swap cache
Feb 21 17:32:43 hppd600-g3 kernel: Free swap  = 0kB
Feb 21 17:32:43 hppd600-g3 kernel: Total swap = 1000444kB
Feb 21 17:32:43 hppd600-g3 kernel: 2065206 pages RAM
Feb 21 17:32:43 hppd600-g3 kernel: 0 pages HighMem/MovableOnly
Feb 21 17:32:43 hppd600-g3 kernel: 64196 pages reserved
Feb 21 17:32:43 hppd600-g3 kernel: 0 pages hwpoisoned

Feb 21 17:32:43 hppd600-g3 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=user.slice,mems_allowed=0,global_oom,task_memcg=/user.slice/user-113.slice/user@113.service/background.slice/tracker-miner-fs-3.service,task=t>
Feb 21 17:32:43 hppd600-g3 kernel: Out of memory: Killed process 833 (tracker-miner-f) total-vm:625676kB, anon-rss:3144kB, file-rss:4816kB, shmem-rss:4kB, UID:113 pgtables:280kB oom_score_adj:200
Feb 21 17:32:43 hppd600-g3 kernel: i915 0000:00:02.0: [drm] Resetting rcs0 for stopped heartbeat on rcs0

Thanks, I’ve got a HP SFF as well. Not 100% sure how to turn it on though from Ubuntu. There’s a software based version: https://manpages.ubuntu.com/manpages/xenial/en/man8/watchdog.8.html

But I guess that’s not the one using the motherboard watchdog function.

Thanks! That should work.

Yes, very good idea. I’ve got HA on a RPI so that should be easy.