I absolutely agree with Graham's report. I also saw plenty of unexplainable resets of the Beaglebone, same as Graham says when just having them on the table, naked, no cape, just flashed with fresh image. My power supplies are 5V/2A from a german quality vendor and I'm using them in hundreds, the power supply is not the reason. There is no information in journalctl -f, no information on the RS232 console, the board just resets without any indication.
I made a test with a bigger number of Beaglebone (white) and Beaglebone-Black, and these are the results within 24h. All but two of them are operating this release: uname -a Linux bb151f 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 armv7l GNU/Linux These are my test results: MACBBCommentNumber of Resets / uptime 00:18:31:e0:54:35Whitestable since power on (1day) -bc:6a:29:cc:a5:aeWhitestable since power on (7 days) -00:18:31:8b:59:4eWhitestable- d4:94:a1:85:c2:3dWhitestable running 4.1.1-bone9 - 78:a5:04:cd:cf:b3Blackstable- 78:a5:04:ce:13:21Blackstable since power on (12days) -d0:5f:b8:d7:53:ecBlackunstablereboots every 4-6h6c:ec:eb:5d:26:09Blackunstable, even with 4.2.0-rc1-bone13d0:39:72:45:1c:f1Blackinstable, got 1x stuck in U-Boot 678:a5:04:ca:a9:4eBlack 378:a5:04:fe:f6:11Black 378:a5:04:cf:4f:8eBlack 678:a5:04:db:5d:63Black 354:4a:16:c5:ea:75Black 278:a5:04:cf:84:5aBlack 378:a5:04:fd:93:dcBlack 278:a5:04:fe:de:13Black 578:a5:04:cf:5a:40Black 478:a5:04:cf:6c:1fBlack 66c:ec:eb:a5:15:1fBlack 278:a5:04:cf:65:48Black 478:a5:04:ca:8f:34Black 3 I'm sampling uptime of all boards every 30min, and sometimes the simple script that collects that data gets stuck, so the true number is definitly higher. All my Beaglebone (white) under test are rock-solid, and so are also two BB-Black. Those two BB-Black are elder devices from the first BB-Black on the market, while those that are unstable are mostly latest production from Embest. As Graham reports, all the boards are stable when running something before 4.x.x, in my case this is the very old 3.8 Angstrom: # uname -a Linux beaglebone 3.8.13 #1 SMP Tue Jul 30 11:56:13 CEST 2013 armv7l GNU/Linux # lsb_release -a Distributor ID: Angstrom Description: Angstrom GNU/Linux v2012.12 (Core edition) Release: v2012.12 Codename: Core edition I am now changing my worst candidates back to uname -a Linux bb1cf1 3.19.3-bone4 #1 Fri Mar 27 16:05:22 UTC 2015 armv7l GNU/Linux Any comment or help would be greatly appreciated. If I can add some testing, let me know. --- Guenter (dl4mea) -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
