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Everything posted by xwiggen

  1. you want buffers to be flushed directly so the drive does not spin up whenever the kernel decides it needs to flush. IMHO I wouldn't recommend it (esp in RAID), consumer disks aren't as loud as 20 years ago and spinning up is the point where drives fail most. Early USB disks where prone to early catastrophic fails due to USB power mgmt.
  2. What does below yield? % cat /sys/class/hwmon/hwmon0/temp1_input /sys/devices/virtual/thermal/thermal_zone0/temp /etc/armbianmonitor/datasources/soctemp
  3. If you're planning to do 4K do read https://forums.plex.tv/t/info-plex-4k-transcoding-and-you-aka-the-rules-of-4k/378203
  4. odd, both zeropi (http://ix.io/2DtK) and opipc+ (http://ix.io/2DEm) have ok temps (though 7z does not finish) and do not throttle below 80; buster is somewhat leaner than focal (~2C). have you run without X (acceleration?)
  5. I had connectivity issues on 5.4 earlier which resolved by mounting with vers=2.1, you might try that
  6. might consider Epyc with 8 channels, 16 dimm slots and better I/O, memory is "cheap"/upgradeable upto 1TB. Best of luck!
  7. https://apt.armbian.com/armbian.key if the image is signed by Igor's key then it is an 'authentic' image. If signature verification fails due whatever reason (be it modification afterwards) the image is not authentic. The SHA hash only verifies the image but not who creates the SHA hash, for this you have signature verification. So, if either SHA, image or asc file are maliciously altered on server, you still have signature verification to verify it's an authentic image (which fail in case of modification, because it requires access to Igor's key to sign).
  8. Try cross-compiling with -mfloat-abi=soft -static, all libraries on your armbian image are armhf: % dpkg -S libm.so libc6:armhf: /lib/arm-linux-gnueabihf/libm.so.6 libc6-dev:armhf: /usr/lib/arm-linux-gnueabihf/libm.so
  9. On my headless machines I usually skip user creation and enable SSH pubkey login only after transferring my key (https://wiki.archlinux.org/index.php/SSH_keys) IMHO the reason for not allowing root login (whether SSH or getty) is both to prevent wreaking havoc on the system by accident and not running processes elevated by default (which is a good security measure -- privileged account management). I'm just too lazy to type sudo as I do only configuration/package/service management on the machines.
  10. xwiggen


  11. Dependency on binary blobs will eventually render your system useless... and somehow I suspect GPU libraries/drivers are intentionally closed source partly due to the patent-riddled 3D ecosystem
  12. After you've imported the public key with step 1: % gpg --verify Armbian_20.08.1_Zeropi_bionic_current_5.8.5.img.xz.asc gpg: assuming signed data in 'Armbian_20.08.1_Zeropi_bionic_current_5.8.5.img.xz' gpg: Signature made Thu 03 Sep 2020 04:20:28 PM CEST gpg: using RSA key DF00FAF1C577104B50BF1D0093D6889F9F0E78D5 gpg: checking the trustdb gpg: no ultimately trusted keys found gpg: Good signature from "Igor Pecovnik <igor@armbian.com>" [unknown] gpg: aka "Igor Pecovnik (Ljubljana, Slovenia) <igor.pecovnik@gmail.com>" [unknown] gpg: WARNING: This ke
  13. The transcoding is handled by the jellyfin-ffmpeg package, which is basically a fork of ffmpeg. You can specify your own path to ffmpeg binary in settings, as the supplied binary is linked with raspberry libs (which is the only rpi specific code of jellyfin). Raspberry pi is ok for VPU. @Wernertry jellyfin on your NEO3 and compile ffmpeg with --enable-version3 --enable-rkmpp --enable-drm Personally I don't use transcoding but leave it all to the RPI3 (LibreElec) which happily plays all formats from SMB except for 10bit x265.
  14. Does thermal throttling work? At night cronjobs start which might overheat the board. Nonetheless, /etc/fake-hwclock.data should update by the hour, could you include hwclock -r and /etc/fake-hwclock.data?
  15. The fingerprint is a crypto hash over the public key which makes it easier to identify due to the smaller size.
  16. It's not a checksum, it's a cryptographic hash (SHA). If you're able to change the image and keep the same hash, you've found a weakness in the SHA algorithm because it's not bruteforceable in our lifetime.
  17. I had similar issues with both dhcp clients enabled for ipv4 and ipv6 on the pihole, it's an issue with dhclient ipv6. My solution; Disable DHCP4/6 on the router and enable it on the pihole (SLAAC+RA,rapid commit), add static addresses for IPV6 and IPV4 (include router as gateway for both instances). in the router, set the dns4/dns6 settings to pihole and enable RFC5006 to allow for DNSv6 advertisement.
  18. Allwinner H3 for headless low-demanding tasks, excellent support/stability and surprisingly tough for a low end dirt-cheap soc.
  19. Fake hwclock saves/restores the date on SD in Armbian between reboots, don't know about the specifics in Android.
  20. This is because the realtime clock of the Pi is not battery-powered, i.e. after powercycle it resets to factory default. The ds1307/3231 do have battery but need i2c in kernel and additional configuration to be used as main RTC instead of the Pi RTC. In other words, by default the time is stored/restored on Pi RTC.
  21. Don't think so either, considering reports about high load freezing on rk3288/rk3328 I suspect there's also some design issue wrt interrupt handling.
  22. Try and build the kernel (see https://docs.armbian.com/Developer-Guide_Build-Preparation) with custom configuration; set the Allwinner SOC sound drivers (sun4i-codec, sun8i-codec) to M instead of the default.
  23. Mainline only. Legacy runs stable at 73-81C, apart from GLES/GBM/FBDEV issues with mali blobs. Must say I've experienced some lockups with WiFi on H3 also with 5.8.x this week (RTL8189FS), one kernel panic on zeropi H3
  24. update; to get the system reasonably stable I've been forced to use active cooling, high load with 70+C temps make the board hang. This is pretty obnoxious as this temp is reached easily (fanless) in idle state even when limiting cpu frequency, so my intention of running even simple emulation is a no-go.
  25. Setting default card (https://www.alsa-project.org/main/index.php/Setting_the_default_device) without messing with indexes does not help?