william@beaglebone:~$ sudo mount /dev/mmcblk1p1 /media/rootfs/
william@beaglebone:~$ cd /media/rootfs/
william@beaglebone:/media/rootfs$ cat etc/dogtag
BeagleBoard.org Debian Image 2016-06-19
william@beaglebone:/media/rootfs$ ls boot/ |grep init
initrd.img-4.4.12-ti-r31
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I have two BBG units that I use as headless servers, with only access through Ethernet. Both have been running without reboot for multiple months without any issues. I think that I mentioned that I did have a BBB do exactly what you describe, while running as a headless server last year, but at the time there was a thunderstorm in the area, and lightning strikes in the neighborhood. It recovered on reboot, and has never repeated the symptom.So, my conclusion is that it is possible to happen, but rare, and in my case was probably caused by electrical transient coming in the Ethernet connection which is routed from a cable modem to the outside world.For high reliability application, perhaps some extra transient protection on the Ethernet connection, and some kind of "ping monitor" that can auto-reboot the BBG.--- Graham
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william@beaglebone:~/dev$ cp /boot/dtbs/4.1.34-bone-rt-r24/am335x-boneblack-emmc-overlay.dtb .
cpsw_sleep {
pinctrl-single,pins = <0x108 0x27 0x10c 0x27 0x110 0x27 0x114 0x27 0x118 0x27 0x11c 0x27 0x120 0x27 0x124 0x27 0x128 0x27 0x12c 0x27 0x130 0x27 0x134 0x27 0x138 0x27 0x13c 0x27 0x140 0x27>;
linux,phandle = <0x37>;
phandle = <0x37>;
};
davinci_mdio_sleep {
pinctrl-single,pins = <0x148 0x27 0x14c 0x27>;
linux,phandle = <0x39>;
phandle = <0x39>;
};
pinctrl-names = "default", "sleep";
pinctrl-names = "default";
pinctrl-names = "default", "sleep";
pinctrl-names = "default";
cpsw_sleep = "/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/cpsw_sleep";
davinci_mdio_sleep = "/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/davinci_mdio_sleep";
william@beaglebone:~/dev$ mv am335x-boneblack-emmc-overlay.dtb am335x-boneblack-emmc-overlay.dtb.old
william@beaglebone:~/dev$ dtc -I dts -O dtb -o am335x-boneblack-emmc-overlay.dtb am335x-boneblack-emmc-overlay.dts
william@beaglebone:~/dev$ sudo cp am335x-boneblack-emmc-overlay.dtb* /boot/dtbs/4.1.34-bone-rt-r24/
william@beaglebone:~/dev$ ls /boot/dtbs/4.1.34-bone-rt-r24/ |grep emmc
am335x-boneblack-emmc-overlay.dtb
am335x-boneblack-emmc-overlay.dtb.old
william@beaglebone:~/dev$ sudo reboot
dtc -I dtb -O dts -o am335x-boneblack-emmc-overlay.dts am335x-boneblack-emmc-overlay.dtb
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