hojnikb

erase the card using sdformatter (evo+ supports, but you need to specially enable this feature), redownload the image and flash again with etcher.

@tkaiser There is no need to read the forums or bother what other people say. While opening up armbian might be great to get new users/devs interested in, it also makes it one in many distros, that are available for rpi. It might make more sense to focus on boards (like allwinner) that are not well supported by other guys.

there is also a good chance board youre using will still be sold down the road; cant say the same for Chinese boards. So its really not fair to shit on raspberry for reasons stated above. Maybe tkeiser hates rpi because its the most popular kid on the block

Black PCB is a nice touch, i wish more boards would have this.

PC2 is actually more power hungry than PC.

if you dont like their firmware, you can always contribute here https://github.com/christinaa/rpi-open-firmware

there is this https://github.com/christinaa/rpi-open-firmware so you cant exactly say rpi only runs on proprietary firmware code. you can run completely free code, but with severe limitations as of right now. as for hw, it true that its nothing special (io side is pretty lame just as it was back in 2012) but i has a HUUUUGE following, which makes things a lot easier sometimes. Why reinvent the wheel, just because you dont like the hw or the politics behind it ?

In my experience (at least for desktop use) PC2 isn't all that much faster than PC (legacy armbian image). Web browsing in particular seem to be only marginally better on PC2. i guess thats down to A53 being less efficient (more throttling) and software not being as good as h3 (h5 doesn't have any kind of gpu acceleration).

PC+ was made before NAND started rapidly increasing in price.

Flash is too expensive right now, so thats why they omitted it, at least at this price point.

I just realized this has battery support. This is now almost a perfect IOT board (only other thing being 3g support). Any ideas if 3g/wifi antennas come with the board as well or are those sold separately ?

Finally, Xunlong released this board https://www.aliexpress.com/store/product/Orange-Pi-2G-IOT-ARM-Cortex-A5-32bit-Support-ubuntu-linux-and-android-mini-PC-Beyond/1553371_32802458477.html http://www.rdamicro.com/upload/2016030304473558.pdf

A google doc spreadsheet allowing everyone to to add their result (after approved by someone from the mod team) would make this much more readable and easier to maintain. And keeping this thread for discussion only. tkaiser already did a spreadsheet for some cards, now we just need to move that to an online editable medium like google docs.

So i played undervolting a little bit (focusing on the 1.3Ghz freq. point) and the lowest i got was 1.27V. Any lower than that, StabilityTester spits out different results, which obviously means instability. So i'm a bit skeptical of the results @Bruno George de Moraes posted.

@tkaiser I suggest locking the thread then and just updating OP with relevant results/information

@duyfken Can you retest sandisk card, but this time format the card with ERASE setting in sdformatter. Maybe the card is acting up or something unusual is happening when handling smaller (4k) chunks of data. Also it might make sense to repeat the test a few times, as @tkaiser is continuously suggesting.

that seems very interesting. I guess there is a chance sd card is doing some internal garbage collection (old data from burn in testing ?) which can obviously yield worse results at the beginning.

which results are you looking at ? They look fine to me (bigger the block size, faster performance).

Pretty good random performance from sandisk. Even better than sammy.

guess you're right, but its still a good learning experience Lesson learned; you can almost always do stuff with a single liner Thank you for this, i was not aware of the ftd* command

Nevermind.

Just FYI, if anyone uses PC2 as a web browsing device/kiosk , i'd recommend using 32 bit armhf chromium instead of native arm64 one. Why you might ask ? Well, for starters, armhf version seems to be much easier on the system ram (i'd regularly fill almost all of the 1GB ram just with a few tabs open). Another reason is that armhf seems to be more regularly updated (v56, while arm64 is stuck at v53). Bonus point is also Octane V2 finishes without freezing How you might go about this ? Well first you need to uninstall previous package with this sudo apt-get remove chromium-browser Then install armhf version sudo apt-get install chromium-browser:armhf When the package is installed, you need to do one final step. Add this to launch options chromium-browser --no-sandbox --disable-infobars%U For some reason, having sandbox enabled makes chromium crash when displaying anything. I suspect security of the browser is compromised with the last step somewhat, so use with caution.

If 1.3G is stable at 1.25V, thats quite a bit of reduction. Could help with throttling. How does one change this device tree file ? Any converting necessary or is just a text file ? I might give this a shot myself and do some power testing.

At least they could name it Zero2 Plus or something, so it's at least somewhat consistent with their bloody naming scheme.

try this with modded dts https://github.com/ehoutsma/StabilityTester