Have you visited the Allwinner Chipset wiki? - http://linux-sunxi.org/
Started by suman, July 18, 2015, 08:34:57 am
Quote from: suman on July 18, 2015, 08:34:57 amI recently bought this SBC in India from www.crazypi.com. I flashed the below image:http://dl.cubieboard.org/model/cc-a80/Image/android/android4.4-cb4-emmc-v3.0.img.7zThe device is powered by a 5V 2A power supply and is using 2.4 Ghz Wifi to connect to the internet. USB keyboard, mouse, external speaker and a VGA monitor are attached (through a KVM switch).I am getting random shutdowns (no messages visible on android screen) in the following situations:(1) With Antutu (Downloaded from Google Playstore), the board shutdown down predictably and consistently when it is doing the floating point test. It almost happens at the same place every time i run antutu(2) Chrome and Firefox browsers cause this same type of shutdown\ randomly if we use multiple tabs (3-4)(3) When playing YouTube videos, the board shuts down randomlyOne moment the device is fine and the very next it is completely off (like loss of power). It does not look to me like a kernel panic or software triggered. I suspect more of an hardware issue.Anyone else facing this or similar problem or can give pointers to me on how to debug this further to isolate any android software or hardware fault ?
Quote from: mr.dom on August 09, 2015, 04:35:39 pmLook at attachment for how good it's equipped with heat sinks:). It is not overheated. I think the problem lies in power transmission to RAM somewhere. For the unit of $35 i won't care - just replaced it. But this costs $135!P.S. Do you know how to change the clock?P.P.S. Do you know how to change RAM sharing in between GPU and CPU? I Raspberry Pi it is done fairly easy.
Quote from: allen on August 10, 2015, 03:10:18 amHi mr.dom,i have used CB4 some time.change RAM sharing in between GPU and CPU? You mean release the all of the RAM ？like :root@cubieboard:~# toptop - 07:06:49 up 52 min, 2 users, load average: 3.04, 3.05, 2.93Tasks: 165 total, 1 running, 164 sleeping, 0 stopped, 0 zombie%Cpu(s): 0.3 us, 0.2 sy, 0.0 ni, 99.3 id, 0.1 wa, 0.0 hi, 0.0 si, 0.0 stKiB Mem: 2063980 total,
Quote from: sam on August 10, 2015, 03:06:32 amTry to change a another power supply to If it is ok , The offical standard power supply is : 5V, 4A.