We have a Cobalt RaQ550 patched with all updates except RaQ550-All-Kernel-0.0.1-4-2.4.19C12_V-1. Today suddenly it is restarting after every 15 min. Any ideas why it is restarting?
You may have a bad fan. I believe that if the CPU temperature goes up too high, the 550 will auto-reboot. Sounds like active monitor is checking the temp, seeing that it is too high and rebooting the box.
You can check the temp yourself via: cat /proc/cpuinfo Mine is 46 degrees. To check fan information it's: cat /proc/faninfo Mine looks like this: fan 0 : 0 fan 1 : 9600 fan 2 : 9900 fan 3 : 9900 fan 4 : 0 Brian