| Summary: | qemuarmv5 has multiple display heads | ||
|---|---|---|---|
| Product: | [Runtime] General Runtime | Reporter: | Richard Purdie <richard.purdie> |
| Component: | General Runtime | Assignee: | Jon Mason <jon.mason> |
| Status: | RESOLVED OBSOLETE | QA Contact: | |
| Severity: | normal | ||
| Priority: | Medium+ | CC: | pidge, randy.macleod |
| Version: | unspecified | ||
| Target Milestone: | 5.1 | ||
| Hardware: | x86 | ||
| OS: | Multiple | ||
| Whiteboard: | |||
| OS type for building Yocto: | --- | Type of Regression: | --- |
| Verified: | Documentation change: | No (bug/feature does not impact docs) | |
|
Description
Richard Purdie
2024-03-07 15:09:51 UTC
I believe this is because this (virtual) board has PL110. During boot, I see (multiple times) in dmesg: [ 2.478044] clcd-pl11x 10120000.display: PL110 designer 41 rev0 at 0x10120000 [ 2.479426] clcd-pl11x: probe of 10120000.display failed with error -2 [ 2.709386] drm-clcd-pl111 10120000.display: set up callbacks for Versatile PL110 in bsp/arm-versatile-926ejs/arm-versatile-926ejs-gfx.cfg it is enabled via CONFIG_DRM_PL111=y CONFIG_FB_ARMCLCD=y Since the VirtIO GPU is also enabled via virtio-gpu-pci, there are 2 graphics chips on there. Disabling this via menuconfig removes the entires and probably resolves the issue. If you tell me how to test this, I can verify. Though (assuming this is the issue), is this something we want to remove? It is present on the actual hardware. The framebuffer device driver for amba-clcd was removed in the v6.8 kernel. Bruce already removed it from the yocto kernel cache on Aug 5, 2024. So, I don't believe this is an issue going forward. If this is still an issue, than please re-open (as I think we'll have to remove the DRM_PL111 from the versatile config or have the virtio cfg disable all other drm drivers). |