RPI4 - sporadic "black"-screen

DDuck007 · July 7, 2021 at 12:25 PM

Hello,

yesterday I built an image for RPI4 from act. master on github.

While booting or navigate in menus I saw sporadic "black screens" (also if watching video and fast-forward e.g. 4x) for ~ 2...3 seconds.

Did some testing today and found that reverting this merge-request helps: linux (RPi): update to 5.10.46-69b899c #5475

Checking the log while having this "black-screen" shows this message(s)

Code

2021-07-07 12:01:44.300 T:1178  WARNING <general>: CRenderManager::Configure - timeout waiting for configure
2021-07-07 12:01:44.300 T:1178    ERROR <general>: OutputPicture - failed to configure renderer
2021-07-07 12:01:44.455 T:1179    ERROR <general>: CDVDAudio::AddPacketsRenderer - timeout adding data to renderer
2021-07-07 12:01:45.249 T:1047    ERROR <general>: ActiveAE::FlushEngine - failed to flush
2021-07-07 12:01:45.381 T:1048     INFO <general>: CActiveAESink::OpenSink - initialize sink
2021-07-07 12:01:45.581 T:1048     INFO <general>: CAESinkALSA::Initialize - Attempting to open device "hdmi:CARD=vc4hdmi0,DEV=0"
2021-07-07 12:01:45.587 T:1048     INFO <general>: CAESinkALSA::Initialize - Opened device "hdmi:CARD=vc4hdmi0,DEV=0,AES0=0x04,AES1=0x82,AES2=0x00,AES3=0x02"
2021-07-07 12:01:45.588 T:1048     INFO <general>: CAESinkALSA::InitializeHW - Your hardware does not support AE_FMT_FLOAT, trying other formats
2021-07-07 12:01:45.588 T:1048     INFO <general>: CAESinkALSA::InitializeHW - Using data format AE_FMT_S24NE3
2021-07-07 12:01:45.595 T:1047  WARNING <general>: CActiveAE::StateMachine - signal: 11 from port: OutputControlPort not handled for state: 2
2021-07-07 12:01:45.595 T:1047  WARNING <general>: CActiveAE::StateMachine - signal: 12 from port: OutputControlPort not handled for state: 2
2021-07-07 12:01:45.661 T:1179    ERROR <general>: CDVDAudio::AddPacketsRenderer - timeout adding data to renderer

Display More

and

Code

2021-07-07 12:01:53.102 T:1178  WARNING <general>: OutputPicture - timeout waiting for buffer

**HiassofT** · July 7, 2021 at 1:09 PM

Please post a full debug "pastekodi" log where you reproduced the issue.

so long,

Hias

DDuck007 · July 7, 2021 at 1:56 PM

please find the log here: http://ix.io/3sdk

**HiassofT** · July 7, 2021 at 3:03 PM

Quote from DDuck007

please find the log here: http://ix.io/3sdk

Please fix your power supply issues first:

Code

RPi throttled=0x50000
...
Feb 02 16:29:48.403857 LibreELEC kernel: Under-voltage detected! (0x00050005)
Jul 07 14:41:09.639718 LibreELEC-rpi kernel: Under-voltage detected! (0x00050000)
Jul 07 14:45:16.053017 LibreELEC-rpi kernel: Under-voltage detected! (0x00050005)

so long,

Hias

DDuck007 · July 8, 2021 at 1:49 PM

Thank you for the hint! Just checked my USB connector at the RPI and saw it was broken .

Soldered a new one and until now there was no black screen - will continue testing and will check what changed in linux that may increase RPI current (peaks) …