Interesting. I have this PRO-AA phone since February 2016. I’ve been using FP Open ever since I heard of it, and haven’t had any issues with random reboots, until I upgraded to the last Android 5.1 release. All releases of Android 6 also gave me random reboots, and each of them was worse.
So, the end I did the jump to Lineage at some point in summer, and haven’t had reboots there, until I switched to the official one.
@chrmhoffmann
I’ve started to gather them at https://struppi.name/fp2_last_kmsg/
Gonna send you a private message when i put new ones there, so I can refrain from spamming this thread
There’s two of those last_ksmg files now, the first one in the folder you’ve already seen through
Ahh, sorry I missed a part of the convo. I can’t seem to find the processor version in LOS though at Settings -> About phone. I fired up Termux, did a cat /proc/cpuinfo and it says I got PRO-AA. I got pretty bad memory with regards to random reboots cause generally it does not bother me. Gonna try to remember!
There’s now 8 last_kmsg.txt files at above mentioned URL:
I can’t spot any particular pattern in the files preceding the crashes. @chrmhoffmann, what’s your opinion on the memclock issue? Running the processor at out-of-spec conditions might explain the seemingly random error patterns IMHO.
struppi, to be honest. I don’t know. It’s weird that you have so many issues where I have no reboots at all. Some of crashes seem to be related to some filesystem problems though. I’ll try to run kernel debug and see if there’s something fishy.
I just now noticed something in the description of the “Efficiency” performance profile of the power saver settings. You can read about it here (because German locale on my phone).
The “Efficiency” profile is described as
“Favor power savings. Limit maximum CPU power and optimize for power saving at the cost of higher latency.”
If Kernel Adiutor doesn’t work, perhaps that setting could do something helpful?
I did set it when I installed LineageOS because it seemed to be the reasonable choice for me, but I totally forgot about the CPU limiting part …
@struppi: I swapped my display module with a friend of mine and forgot to re-insert the paper I inserted there some time ago (oh, it’s over a year now ). Suddenly I had my first reboot for a long time. Are you aware of this?
Is there a “HowTo” about creating a kmsg_last report step to step. Couldn’t find it, but did have some spontaneous reboots with the Official LOS, didn’t have it before with the unofficial version.
You need a Terminal. Either install “Termux” and open that or enable debugging on the phone, connect it to your Computer and open a shell by “adb shell”.
Gain root access: type “su”
type “cat /proc/last_kmsg > /sdcard/Documents/FilenameOfYourChoice”
The new file will appear in the “Documents” folder of your phone’s internal memory. Copy it by whatever means you like.
I don’t think there’s a way to access /proc/last_kmesg without becoming root first.
StevenHachel, you seem to have trouble with your sd card. Could you please remove it and check if it doesn’t have issues? And see if the reboots are gone without SD card?
There’s also one last_kmsg where the kernel is running in permissive mode and running busybox. Why?
). Suddenly I had my first reboot for a long time. Are you aware of this? 
Still, thanks for trying to rule out potential issues