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TDA4VM: Error opening /dev/fb0

komal k s
Prodigy 150 points
Part Number: TDA4VM

Tool/software:

Hii

I'm working on a TI J721E EVM, and during boot, I'm encountering an issue where the psplash-start service fails to start due to a missing /dev/fb0. Below is the relevant error output:

root@j721e-evm:~# systemctl status psplash-start.service
x psplash-start.service - Start psplash boot splash screen
    Loaded: loaded (/usr/lib/systemd/system/psplash-start.service; enabled; preset: enabled)
    Active: failed (Result: exit-code) since Tue 2024-02-27 17:26:12 UTC; 1min 29s ago
   Process: 480 ExecStart=/usr/bin/psplash (code=exited, status=255/EXCEPTION)
  Main PID: 480 (code=exited, status=255/EXCEPTION)
       CPU: 3ms

Feb 27 17:26:12 j721e-evm systemd[1]: Starting Start psplash boot splash screen...
Feb 27 17:26:12 j721e-evm psplash[480]: Error opening /dev/fb0
Feb 27 17:26:12 j721e-evm systemd[1]: psplash-start.service: Main process exited, code=exited, status=255/EXCEPTION
Feb 27 17:26:12 j721e-evm systemd[1]: psplash-start.service: Failed with result 'exit-code'.
Feb 27 17:26:12 j721e-evm systemd[1]: Failed to start Start psplash boot splash screen.
 

root@j721e-evm:~# ls /dev/f*
/dev/full  /dev/fuse

/dev/fd:
0  1  2  3

Pushpin Observed Errors during Boot:

[FAILED] Failed to start Start psplash boot splash screen. See 'systemctl status psplash-start.service' for details. [DEPEND] Dependency failed for Start Psplash Boot Progress Communication Helper.



So,

  • /dev/fb0 is missing during boot.

  • psplash fails with Error opening /dev/fb0.

  • This leads to the failure of psplash-start.service.

  • I'm running this on a J721E EVM board using prebuilt image. 

- I want to know root cause for this error 
- I want the proper solution for this error. 
- Also will this effect the display part , as i m not getting display also . 

Thanks 

Regards, 
Komal