AngularSpecter

Here's my setup info: http://sprunge.us/eMED I'm running the image I found listed for the zero. When I was getting the crashes the first time, I had ARSIC errors as well. I tried running the fix thermal issues script that I found on this site, and that made no difference. The dvfs table pre-mod was [dvfs_table] pmuic_type = 1 pmu_gpio0 = port:PL06<1><1><2><1> pmu_level0 = 11300 pmu_level1 = 1100 max_freq = 1200000000 min_freq = 648000000 LV_count = 2 LV1_freq = 1200000000 LV1_volt = 1300 LV2_freq = 648000000 LV2_volt = 1100 I can post the full fex if it helps. To alter the max speed I used h3consumption Active settings: cpu 912 mhz allowed, 1200 mhz possible, 4 cores activ dram 408 mhz hdmi/gpu off usb ports off eth0 100Mb/s/Full, Link: yes tun0 no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-P wer=20 dBm Retry long limit:7 RTS thr:off Fragment thr: ff Encryption key:off Power Management:on

What logs are useful? I can recreate the issue pretty reliably. So you need a dump from armbianmonitor prior to and after recovery?

As another test, I limited the max core speed to 912 MHz. I was able to successfully run the VPN for an hour with fairly heavy traffic (streaming video), without it crashing. The performance logs also showed zero increase in temperature and less switching of clock speed and Vcore. I'm wondering if either my psu isn't really supplying a steady 5V on those surges or if there is a bad setting in the voltage/clock scaling ( based on the ARSIC errors, I think there is )

I'm still digging through logs. The only thing I really see are a ton of ARSIC errors, but those are present even when it's stable. I don't think so... at least not directly. I can run pihole doing only dns filtering for days and its fine. If anything, it seems more correlated to activity on the NIC, as the things that kill it are an influx of dhcp requests or routing VPN traffic

I believe I am having this exact same issue. I am using the same board with the same OS version and getting the same hangs. ( If this deserves its own thread, let me know) Details of my system/problem: Pi zero H2 running 16.04 Running pihole and pivpn Installed in case with heatsink Powered from Samsung 2A charger Cat6 to router Running pihole and just doing dns masq, it is stable for days. If I enable dhcp, it tanks within hours. If I turn dhcp on and reboot the router, it tanks as soon as everything hits it simultaneously for an address. Running openVPN (dhcp disabled), it will run fine if nothing is connected. Once a client connects, it will lock up within 20 minutes. Heres the interesting part... I was experimenting last night. With base load (no VPN clients connected, just serving dns) the system idles just north of 50C. Connecting a client causes a mild increase in temp and system load prior to the hang. However.... I hammered on it a bit with a bemchmark, pulling loads and temps much higher than what it sees before it crashes, and it remains stable. Here is the output of pimon during that test. There are two drops. The uptick before the first drop is where I connected and openVPN client. After rebooting the system, I did the benchmarking ( the rise in temp and cpu), followed by reconnecting to the VPN before the second crash.