- May 23, 2015 at 6:11 am #48810
I’ve had my CI20 for a day over a month now. While I’ve been pleased with it, overall, I’ve run into an odd problem.
Lately I can’t get it to run for a sustained period of time. Sometimes it’ll run for a couple hours, and then freeze up. I can power cycle and get it back up.
At first I thought that maybe I was installing software that was causing it, but today I reflashed to the latest Debian 7, started an upgrade, and it froze before finishing that.
Thanks!May 26, 2015 at 9:50 am #48828
Welcome to the forum.
I apologize for the board freezing up.
We’ve had some boards fail with an issue with the memory chip.
Could you install memtester and run it?
on the ci20.
> apt-get install memtester
This command will show how much free memory left.
> memtester 850M
This will thrash the memory bus.
We are looking at tweaking DDR parameters in software for a fix..
Do you have an sd card to run memtester using the image here?
This image has some tweaked parameters.
ZubairLKMay 27, 2015 at 4:08 am #48835
Thanks for the help. When I ran memtester from the normal setup, I could never seem to get it past either the Stuck Address test or the Random Value Test without it freezing up, but no error was reported.
When I ran the buildroot version, it ran much better, getting all the way to Checkerboard before showing some errors:
Checkerboard: setting 36 FAILURE: 0xaaaaaaaa != 0x55555555 at offset 0x15af4cfc.
FAILURE: 0x55555555 != 0xaaaaaaaa at offset 15af4d00.
Bit Spread: testing 4 FAILURE: 0xffffffaf != 0x00000050 at offset 0x07722c80.
FAILURE: 0x00000050 != 0xffffffaf at offset 0x07722c84.
Bit Flip: setting 48
At this point the CI20 froze up.