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Some typical issues related to the visual domain are listed below. Solutions or debugging methods are proposed for these issues.
If your issue is not listed, try also looking in the articles in the visual or troubleshooting grids categories.
| Symptom | Resolution |
|---|---|
| DRM/KMS | |
Template:Board$ ./QtDemo Could not queue DRM page flip! (Permission denied) Could not queue DRM page flip! (Permission denied) |
The psplash-drm userland splash screen is running and is then the DRM master, avoiding other DRM applications to access to DRM/KMS. Please stop this psplash-drm application with the command below before running your use case: Template:Board$ psplash-drm-quit |
| GPU | |
[ 45.679109] Unhandled fault: imprecise external abort (0xc06) at 0xae1a0000 [ 45.684628] pgd = d1e98000 [ 45.687334] [ae1a0000] *pgd=d1e9f835, *pte=f8000747, *ppte=f8000c37 [ 45.693842] Unhandled fault: imprecise external abort (0xc06) at 0xae1a0000 [ 45.700480] pgd = d1dc0000 [ 45.703156] [ae1a0000] *pgd=00000000 |
Maybe the GPU reserved memory area in the kernel device tree is not aligned with the board DDR memory size, please have a look at the "gpu_reserved" entry in the kernel device tree, and update it if necessary. |
| Wayland / Weston | |
Template:Board$ glmark2-es2-wayland [11380.091100] reserved_mem_unmap_user: vm_munmap failed eglCreateWindowSurface failed with error: 0x3003 Error: eglCreateWindowSurface failed with error: 0x3003 Error: CanvasGeneric: Invalid EGL state Error: main: Could not initialize canvas Template:Board$ weston-simple-egl [11380.091100] reserved_mem_unmap_user: vm_munmap failed has EGL_EXT_buffer_age and EGL_EXT_swap_buffers_with_damage weston-simple-egl: ../git/clients/simple-egl.c:440: create_surface: Assertion `ret == EGL_TRUE' failed. Aborted (core dumped) Template:Board$ weston-simple-egl has EGL_EXT_buffer_age and EGL_EXT_swap_buffers_with_damage Segmentation fault (core dumped) |
Weston is using pixman software composition instead of GPU hardware composition. This may be because you have not accepted the EULA at the beginning of the build... Template:Board$ cat /etc/default/weston #Autogenerated OPTARGS=--use-pixman Please comment the content of the file /etc/default/weston or delete it. |
Template:Board$ systemctl stop Weston Failed to stop Weston.service: Unit Weston.service not loaded. |
Please remove the capital letter in the word Weston. The correct command is Template:Board$ systemctl restart Template:Highlighteston |
| GStreamer | |
There may be a timestamping problem, or this computer is too slow. |
This message is typically displayed when the GStreamer A/V sync drops some frames. This may be due to a decoder that is too slow, badly timestamped buffers, or a badly formed container (.ts, .3gp, .mp4, .avi, ...). |
Could not create Wayland display |
HDMI TV not connected, please connect it.
|