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Bug 5452

Summary: [KMS/DRM] Latest v2.0.15 Chgs Break RPi4
Product: SDL Reporter: bluestang2006
Component: videoAssignee: Manuel Alfayate Corchete <redwindwanderer>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: major    
Priority: P2    
Version: 2.0.15   
Hardware: ARM   
OS: Linux   

Description bluestang2006 2021-01-08 21:05:10 UTC 
Hello,

The latest KMS/DRM changes have broken the video for my RPi4. Here is a snippet of dmesg:

[   18.567586] [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA:
[   18.567618] vc4-drm gpu: [drm]                           dumb: 247068kb BOs (32)
[   18.584884] [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA:
[   18.584903] vc4-drm gpu: [drm]                           dumb: 247068kb BOs (32)
[   18.585098] [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA:
[   18.585104] vc4-drm gpu: [drm]                           dumb: 247068kb BOs (32)

This is for both OpenGLES and Vulkan, although I couldn't get Vulkan to work outside of RetroArch - which is a separate issue altogether.

I am using kernel 5.10.5 (rpi-update) and a recent build of the latest MESA drivers for the RPi4.
Comment 1 Sam Lantinga 2021-01-08 22:01:15 UTC 
Is this happening with the very latest changes?
http://www.libsdl.org/tmp/SDL-2.0.zip
Comment 2 bluestang2006 2021-01-08 22:59:46 UTC 
Looks like 352407eb17cb has fixed the issue.
Comment 3 Sam Lantinga 2021-01-08 23:55:10 UTC 
Great, thanks!