johanvdw

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  1. A final note in case someone else bumps on something similar: stability problems persisted, so we returned the computer and the shop switched both CPU and motherboard. We have been running without issues since that.
  2. I'm using debian buster with kernel 5.9 (backports). I could try using ubuntu. Anyway, everything works quite well, but after approx one day at least one kernel trace ends up in the logs. The PSU is not the one I wanted (hard to find ones with a lot of capacity currently), but 850W should still be sufficient I guess (there is only an nvme in the machine (samsung 970 evo). Also I would suspect that power problems would lead to reboots instead of just single programs failing.
  3. That's exactly what we have KSM32ED8/32ME https://azerty.nl/product/kingston/4310306/server-premier-ddr4-module It is actually quite interesting we came up with more or less the same build.
  4. Thanks for your reply. We experienced problems with both the 1.10 bios and 1.12 (from asrockrack ftp, a bit vague, I wouldn't use it if you have no issues). I see random crashes and kernel traces in dmesg. I think it may be bad memory, but I failed to get memtest86 or memtest86+ working. As I remembered you had more or less a similar setup I was curious if you had any similar issues. Luckily you don't :-)
  5. Going a bit offtopic, but can you (or one of the server admins) post some info on the bios+kernel used? We have the same motherboard (with the 32 core threadripper) and we see a lot of stability issues which I can not explain yet. Have you seen anything similar?
  6. Okay, perhaps I should limit the scope: is there an sbc (or set top box) which can take hdmi in and encode it? I have seen orangepi rk3399 has an input port, but is it supported?
  7. Hi, I wonder if anyone has experience using an sbc (or tv box) for remote controlling a server. I think the necessary pieces are there on many boards (many have camera inputs which could perhaps be used for video, it looks like some even have an hdmi in). I found this [1] project, but it uses some extra hardware I'd like to avoid. https://github.com/Fmstrat/diy-ipmi Has anyone done anything similar? Note I'm mostly looking into this to gain knowledge, not to put this in production in a real world situation.
  8. Too late now, but I save all of my configuration using etckeeper . You will not regret doing the same.
  9. You don't need to specify hwaddress if you use kernel 5.0 or later, as the changing mac address was addressed.
  10. HDMI audio for H6 is not yet supported in the mainline linux kernel, and nobody is currently working on it --> see https://linux-sunxi.org/Mainlining_Effort
  11. I don't think you need the whole config, the commit which fixes reboot is just this one: https://github.com/orangepi-xunlong/OrangePiH6_external/commit/4c2440c02e29f84aef7a296f90e170f38e12c248
  12. If you have a connection from linux to linux, you could also consider wireguard. It performs much faster than openvpn. https://www.wireguard.com/performance/
  13. AFAIK openvpn only uses one core, not sure how this is on ARM, but at least on intel, it would mean that only one core is actually on a high frequency.
  14. You can actually override the mac address in your networking configuration. This is how I do it: edit /etc/network/interfaces and add eg: auto eth0 iface eth0 inet static address 10.17.0.80 netmask 255.255.255.0 gateway 10.17.0.1 dns-nameservers 10.17.0.3 10.17.0.1 hwaddress ether 69:de:92:ea:1f:e9 And then disable network manager and reload networking: systemctl disable NetworkManager systemctl restart networking For me the major remaining issue to use this is the fact that the board still shuts down on reboot.
  15. I did some more measurement using that case. Moving the fan to 3.3 volt makes it virtually silent (I hardly hear it at 1m distance). Under full load (armbianmonitor -z in a loop) power consumption actually is never above 4W, so I think that with a large heatsink you could probably keep this cool even passively. Anyway, with that case and a tiny ceramic heatsink (one similar to these one ) CPU temperature stayed below 65 (with the fan is at 3.3 volt). With a slightly larger heatsink temperatures would remain even cooler I guess.