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:
MAC | BB | Comment | Number of Resets / uptime
|
- | - | - | - |
00:18:31:e0:54:35 | White | stable since power on (1day)
| - |
bc:6a:29:cc:a5:ae | White | stable since power on (7 days)
| - |
00:18:31:8b:59:4e | White | stable | -
|
d4:94:a1:85:c2:3d | White | stable
running 4.1.1-bone9
| -
|
78:a5:04:cd:cf:b3 | Black | stable | -
|
78:a5:04:ce:13:21 | Black | stable since power on (12days)
| - |
d0:5f:b8:d7:53:ec | Black | unstable | reboots every 4-6h |
6c:ec:eb:5d:26:09 | Black | unstable, even with
4.2.0-rc1-bone1 | 3 |
d0:39:72:45:1c:f1 | Black | instable,
got 1x stuck in U-Boot
| 6 |
78:a5:04:ca:a9:4e | Black |
| 3 |
78:a5:04:fe:f6:11 | Black |
| 3 |
78:a5:04:cf:4f:8e | Black |
| 6 |
78:a5:04:db:5d:63 | Black |
| 3 |
54:4a:16:c5:ea:75 | Black |
| 2 |
78:a5:04:cf:84:5a | Black |
| 3 |
78:a5:04:fd:93:dc | Black |
| 2 |
78:a5:04:fe:de:13 | Black |
| 5 |
78:a5:04:cf:5a:40 | Black |
| 4 |
78:a5:04:cf:6c:1f | Black |
| 6 |
6c:ec:eb:a5:15:1f | Black |
| 2 |
78:a5:04:cf:65:48 | Black |
| 4 |
78:a5:04:ca:8f:34 | Black |
| 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)