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  1. Returned zram swap back. Rebooted. And once again:
  2. In short: disabling zram-config.service and using "pure partition swap via ssd" causes problems HC-1, armbianmonitor -u = UPDATE: "New year problems party" continues: armbianmonitor -u =
  3. ODROID HC1 / HC2

    Has anyone tried to use a fan with Odroid HC-1 ? Too hot for my default load scenario (75..80 deg. cel.), even had to make an "ugly rack" (with hdd location below HC-1) to avoid hdd overheat and allow free airflow from heatsink. There are 2 "dot"-connectors marked "GND" and "12V"; looks like they are for external cooler, am i right ?
  4. @Igor It's meaningless, because my "black cube PSU" provides OVERVOLTAGE by default (see image attached) So, i'm just an "extremely lucky" one who got 2 unstable PSUs. Absolutely awesome. Will wait for 'reference PSU'. @tkaiser i'll say it: ok, looks like you were right So: most likely, the set of sporadic problems was caused by usage of 2(!) unstable (OVERVOLTAGED) PSU's one-by-one.
  5. grep@orangepiprime:/home$ sudo btrfs scrub status /home scrub status for 835d7f1d-2047-47b1-9dcc-24bbc3be48c0 scrub started at Sun Dec 17 14:49:30 2017 and finished after 00:42:45 total bytes scrubbed: 94.53GiB with 0 errors grep@orangepiprime:/home$ df -h /home/ Filesystem Size Used Avail Use% Mounted on /dev/sda1 430G 96G 333G 23% /home stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 501s stress: info: [21289] dispatching hogs: 8 cpu, 4 io, 2 vm, 0 hdd stress: info: [21289] successful run completed in 501s See no problem too (BTW, your SoC is really hot under stress, so my previous guess about SoC overheat looke more and more like wrong one): But i will replace PSU with "black cube" and will "just watch if something strange happen". After that, seems like the best i can do is to wait for "reference PSU" from Xunlong (but HC-1 will arrive earlier some maybe i just will forget OPi Prime as a nightmare).
  6. @tkaiser @chwe @Igor @TonyMac32 Sorry for interrupt, but this one does not look for me as the same PSU problem (i turned off all except monerod, so no CPU/IO load at all; ). Should i start new topic or log is enough for you to investigate it "one day"?
  7. If we are talking about uptime, 60+ is not too bad (with ubuntu), so let it be with HC1. But i do prefer something kinda # uptime 00:38:34 up 1368 days, 5:20, 1 user, load average: 0,11, 0,09, 0,09 even with cost of "lack of maintenance" if security allows that.
  8. 100% agreed, nothing to argue with; @tkaiser even purposed to mesaure voltage via GPIO ... but i don't have enough internal motivation to perform tests once again + i definitely need to "define the correct questions/hypothesises" + "determine correct methods to find the proves/discards for those questions/hypothesises" ... yak! too much work for such "question": it's much easier to buy "reference PSU" That's a good approach when you have to make big deal with lack of resources/small team. See nothing unusual with it, even more, i was really astonished with a lots of posts of @tkaiser one-by-one in this thread. Separately: @tkaiser, thank you for participation, i really appreciate that. BTW: does Armbian project need good photos of OPi Prime PCB ? (you've mentioned it in one of your replies) I can make it, but with my radiators in near day, or without them after my Odroid HC-1 will arrive. Looks like it will go there, as @TonyMac32 had adviced before: it's really too hot to use it without extreme caution. Oh, please, no more fun like that! Better wish me something kinda "Stable powering and smooth working"
  9. So, something like conclusion: 1. You should never use Y-USB cable for powering USB-HDD: it could cause dangerous side-effects like powering your board (and you will not even know about it); 2. Real reason for MULTIPLE "translation fault" and "usb device reset" is still unknown to me: i used two different PSUs and got errors with both, but real experiments (voltage measurement under stress) was with only one, and, finally stabilized the behavior (the reason found was Y-USB powering for HDD, but what were the reasons for all the previous crashes ? ...) 3. By "sum of facts" i could suppose 2 things: - There is an overheat of SoC in "electric closet" which causes strange effects (weakly confirmed, need more different experiments to prove/discard) - PSU "lied on back during tests" (this is "normal position") while in "near by electric closet" it "lied on left-side/hanged on wires" (... yeah, i know it sounds insanely, but who knows whats happening with "hot airflow" within this veeeeery hot PSU when it "lies on left-side" and there is no free airflow to the outside) +funniest thing: never thought that board could be powered via USB, always thought that there is a "current in-flow protection from outside" (kinda "something diod-based"), but looks like "it depends on PCB-implementation" and for Orange PiPrime answer is "yes, you can continue to power the board via USB if you already powered it up"
  10. @tkaiser so, in fact, by using (if generalize widely) "cheating methods" i got a lot of support from you using your "feeling of responsibility for the Armbian project". Do no offend please, that definitely was not my intention (i would performed all those tests anyway because of my nature, but it was good experience: to ask for help and to share results with others + learn a couple of lessons kinda "never use Y-USB" and "Check the PSU before you going to replace it") And i think i will replace my OPi Prime with Odroid HC1 (which i hope won't be so problematic)
  11. Walls are spoiled, except the last one (i'll spoil it after completion).
  12. @tkaiser Mmm.. cant understand this; as i understand "almost nothing" had changed. Do you remember this: Now it's just a: PSU screw terminal <=> two thick wires taken from "standard black computer PSU power connector internals" <=> twist, covered with insulating tape + multimeter connected to this point <=> two a bit thiner (but thick enough) wires ended with 1.7mm jack (cut from 3A PSU). So, there is only one thing changed: i removed separate power supply via Y-USB-CABLE @tkaiser i've attached another foto, wires connection is pretty clear from it
  13. STEP3 candidate. After a while, and, of course, STEP2 completion.
  14. It was not about "savings", i looked something different from "standard black cubes" with 5V/3A, and found that one. They have a wide range of PSU's so i thougt that they know what the do. In fact, indeed: for example, should not there be any protection on board from such current flow ? +there was a recommendation from other user ( @guidol ) to use separate power source for USB-HDD, so this is definitely "not obvious" (at least for me and him) Already ordered one from Germany with 4A PSU. There is no official shipment to Russia, but there are a lot of ways to get it. Right after STEP2 (see my updates). And looks like (at least for now, after 1h:10m of testing) the problem is not with PSU (the question is "how long shoud it run in critical mode to we make sure that it is stable enough") Disk drive is SSD, so no spinning. Sounds strange: you deny lessons learned from negative experience. What is 'proper' or 'not proper' ? Saying 'not proper' you're making a lot of non-proved assumptions (for example about PSU). And about 'expirienced' users: once again, what will you and @tkaiser and @TonyMac32 would say if this "shitty psu" will remain stable in next 24 hours under stressed mode ? The question should be set in different form: "do we have enough proves of our assumption" but not in form "my expirience tells me that problem is with PSU, so, because i'm well-expirienced, trust me, you're wasting your time".
  15. PART2 This time i used USB 3.0 "single" cable and connected multimeter to the place of twist of wires from screw terminal & 1.7mm jack (you could see all the construction on photo, i've moved all the parts from electric closet to the table, this allows to monitor voltage continuously) I've skipped tests @1104 MHz (see no point), so: 1. No load / 1152Mhz: 5.11v (funny, looks like limited electric closet space without normal airflow gives ~ +10 deg. celcius of SoC temp on idle) 2. 1 minute after start a lot of IO/CPU intensive tasks: flapping 5.08..5.10V 3. 10 minutes after start a lot of IO/CPU intensive tasks: flapping 5.08..5.10V (i'm really impressed with temperature: max is 35 deg, average is ~30; defenitely electric closet was a bad idea to place the board into) 4. 20 minutes after start a lot of IO/CPU intensive tasks: still flapping 5.08..5.10V (temperature is still awesome ~28, but PSU became really hot) 5. 30 minutes after start a lot of IO/CPU intensive tasks: still flapping 5.08..5.10V (temperature is ~28, PSU is still really hot) 6. 40 minutes after start a lot of IO/CPU intensive tasks: still flapping 5.08..5.10V (temperature is ~30, PSU is still really hot; looks like i should wait PSU to overheat and shot start behave itself unpredictably) 7. 50 minutes after start a lot of IO/CPU intensive tasks: still flapping 5.08..5.10V (temperature is ~30, PSU is still really hot) 8. 2h40m after run ... and nothing happened: 5.09 is stable now, temperature is stable ~30.