Bug 93522

Summary:	Tonga has only black virtual terminals
Product:	DRI	Reporter:	EoD <EoD>
Component:	DRM/AMDgpu	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED NOTABUG	QA Contact:
Severity:	normal
Priority:	medium	CC:	edward.ocallaghan
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description EoD 2015-12-28 14:33:22 UTC

When I boot the kernel via grub everything is fine, once the kernel is loading there is only a black screen until X starts.

When I switch back to the VT (via Ctrl+Alt+F1) I still see everything from X, except the mouse. When I switch back to X everything works fine again.

I am using current mesa-git and kernel 4.4-rc6.

glxinfo, dmesg, etc: can be found here: https://gist.github.com/EoD/ecb3e28fc004d740daa1


This might be a duplicate of Bug 91202.

Comment 1 Alex Deucher 2015-12-31 16:38:00 UTC

Make sure you compiled drm fbdev support into your kernel and that the fbcon support is loaded (either built into the kernel or the module is loaded).

Comment 2 EoD 2016-01-01 18:34:17 UTC

Are you referring to DRM_FBDEV_EMULATION?

│ Symbol: DRM_FBDEV_EMULATION [=n]
│
│ Type  : boolean
│ Prompt: Enable legacy fbdev support for your modesetting driver
│   Location:
│     -> Device Drivers
│       -> Graphics support
│ (1)     -> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) (DRM[=y])
│   Defined at drivers/gpu/drm/Kconfig:50
│   Depends on: HAS_IOMEM [=y] && DRM [=y]
│   Selects: DRM_KMS_HELPER [=y] && DRM_KMS_FB_HELPER [=y]

Comment 3 Alex Deucher 2016-01-02 02:24:12 UTC

(In reply to EoD from comment #2)
> Are you referring to DRM_FBDEV_EMULATION?

Yes, that needs to be enabled.


> 
> │ Symbol: DRM_FBDEV_EMULATION [=n]
> │
> │ Type  : boolean
> │ Prompt: Enable legacy fbdev support for your modesetting driver
> │   Location:
> │     -> Device Drivers
> │       -> Graphics support
> │ (1)     -> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
> (DRM[=y])
> │   Defined at drivers/gpu/drm/Kconfig:50
> │   Depends on: HAS_IOMEM [=y] && DRM [=y]
> │   Selects: DRM_KMS_HELPER [=y] && DRM_KMS_FB_HELPER [=y]

Comment 4 EoD 2016-01-02 13:42:24 UTC

That did indeed the trick.

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