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by Plainsman
Mon Jun 18, 2018 4:14 am
Forum: Troubleshooting
Topic: Raspberry Pi builtin WiFi keeps crashing
Replies: 72
Views: 15324

Re: Raspberry Pi builtin WiFi keeps crashing

My Pi 3b's system software is a bit of a mashup so I could have well missed the correct update. I'm running ubuntu linux with a RPI 4.4.50 kernel built to get temperature monitoring and a few other things working. I've tried rpi-kernel_1.20180417-1 and rpi-firmware-stable.zip from github but haven't...
by Plainsman
Sat Jun 16, 2018 7:55 pm
Forum: Troubleshooting
Topic: Raspberry Pi builtin WiFi keeps crashing
Replies: 72
Views: 15324

Re: Raspberry Pi builtin WiFi keeps crashing

robjak wrote: >> never has this problem before, but i recently update/upgrade and then added I2C and a DS3231 RTC. >> Wireless breaks right after a read of temperature from the RTC and a write to a usb flash drive and >> then I run a 6 sec iperf and log it to the usb flash. can add a couple of data ...
by Plainsman
Sat Jul 16, 2016 6:01 pm
Forum: Troubleshooting
Topic: RT PREEMPT kernel not working correctly?
Replies: 3
Views: 1388

Re: RT PREEMPT kernel not working correctly?

Ok, googled a *lot*, spent time patching a vanilla github 4.4.12 kernel for PREEMPT_RT, the preempt patches which allow kernel activity to be preempted, erupting in lower-latency system. I found several good howtos but none of them mentioned this as MANDATORY on a multicore RPi: "To boot the with th...
by Plainsman
Tue Jul 12, 2016 2:45 am
Forum: Troubleshooting
Topic: RT PREEMPT kernel not working correctly?
Replies: 3
Views: 1388

Re: RT PREEMPT kernel not working correctly?

Hi - a couple of questions on compiling 4.4.14 for preemption ... [our Story Thus Far:] I've followed nearly the same route, in ubuntu mate 16.04 and kernel 4.4.12 -- and ended up with a hung system. Assuming Raspbian would have preemption by default, I switch to that environment but find that I onl...

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