[SOLVED] MMAL crashes the OS on RPi 3B+

[Exnor]

(6th Jul, 2019 03:04 AM)Nachteule Wrote:  

(5th Jul, 2019 05:56 AM)Exnor Wrote:  I'm posting this from mobile so sorry for any mistakes or bad formatting.

So finally got my PI 3B+ two days ago, installed the latest image available (from the download section, that i assume is a stable release) and it started perfectly... I made ZERO changes in the config for the exception of configuring the WiFi and adding my local NAS, and when i tried to play a movie puff the unit got a black screen and no longer responded to SSH requests or the attached keyboard.

So long story short I've tried a lot of things but in the end it was MMAL hardware acceleration being on by default that was causing the crashes... I've turned it off and OMX ON and now it works perfectly.... Even added add-ons now.
Except that isn't MMAL hardware acceleration supposed to work?

MMAL acceleration is working for many years w/o any issue

Quote:Any ideas? I've run stress tests, multiple PSUs with 3 Amps, tested for undervoltage, etc, etc and i cant find any indication of what is wrong.

I can upload logs latter if needed, just tell me witch ones.

I don't think that logs would help, because it seems that your Pi is freezing completely, or does your Pi still respond to a ping request?

Could you share a sample video so I could check of this crash happens here also?

Quote:Thank you.

You're welcome

After a few hours tinkering i found out that the unit only freezes because by default the option to adjust the refresh rate to the one of the media (ex 24 fps or tv 30 fps) was on... Now my tv supports those inputs but once I've deselected the option no more crashes so far.

I have no idea why this happened.... The fact is now both mmal and omx hardware acceleration are working.
Tested with several codecs and bit rates so unless i came across another but I'm marking this as solved


Thanks Nachteule

Ps: the unit would crash completely... No network response, nothing.