Edit: Google Coral Dev board fixes

zorrobyte commented 5 years ago

Edit: Read below

Board is being returned.

Installed, installed latest updates. Repeated several times between these issues.

/sys/class/thermal/thermal_zone0/trip_point_4_temp has a default temp set of 65000 degrees before the fan turns on. Changes to this file doesn't persist between reboots.

Wifi needs to be manually reconnected every single time.

Compiling C code results in a hard lock after a few seconds of compiling. https://github.com/f0cal/google-coral/issues/49

libtool: compile: g++ -DHAVE_CONFIG_H -I. -I./src -I./src -DKJ_HEADER_WARNINGS -DCAPNP_HEADER_WARNINGS -DCAPNP_INCLUDE_DIR="/usr/local/include" -pthread -fPIC -pthread -MT src/capnp/compiler/lexer.lo -MD -MP -MF src/capnp/compiler/.deps/lexer.Tpo -c src/capnp/compiler/lexer.c++ -o src/capnp/compiler/lexer.o >/dev/null 2>&1
[ 726.210412] mmcblk0: error -84 transferring data, sector 2036928, nr 256, cmd response 0x900, card status 0xb00

Google's apt repo servers are slow af and often timeout.

Buyer beware.

zorrobyte commented 5 years ago

There is a tech assigned to this, so I'll provide an update. I'd like to keep and use the board if possible! Pardon my frustration, I had high expectations of Google Coral!

Here's a really simple test. Try compiling:

curl -O https://capnproto.org/capnproto-c++-0.7.0.tar.gz
tar zxf capnproto-c++-0.7.0.tar.gz
cd capnproto-c++-0.7.0
./configure
make check
sudo make install

https://capnproto.org/install.html

Mine locks up almost immediately!

zorrobyte commented 5 years ago

There is only 1GB of RAM. Running out of RAM crashes the board. Allocate a swapfile
Format and mount an SD card as the onboard 8GB is tiny
Allocate the swap on the SD so you don't kill the onboard flash
My wifi issues were due to weak signal. Coral has some weaksauce wifi antennas. Connect via ethernet cable
None of these issues are due to thermals. The fan just doesn't run that often.

lleonid commented 5 years ago

mmcblk0: error -84 transferring data ... Should be fixed in the upcoming mendel release.

Namburger commented 4 years ago

@zorrobyte Let me know if anything else I can help with. As Leonid mentioned, most of these issue should be fixed by now, and our apt server is better. As far as OOM causing killed processes, that's quite standard for linux, the solution is usually swap space (pagefile in window). I usually add a 32gb sdcard on my board and use some of the emmc as swap. We are working on new generation with more memories :)

f0cal / google-coral

Edit: Google Coral Dev board fixes #50