[Bug 204725] black screen

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=204725

--- Comment #13 from Ant (untaintableangel at hotmail.co.uk) ---
I've got an RX5700 myself, so lets see if we can't get this sorted.

Can I just check something - the .config file you attached (comment 1)
for the kernel has 

# Display Engine Configuration
#
CONFIG_DRM_AMD_DC=y
CONFIG_DRM_AMD_DC_DCN1_0=y
CONFIG_DRM_AMD_DC_DCN1_01=y
# CONFIG_DEBUG_KERNEL_DC is not set
# end of Display Engine Configuration

whereas mine has 

# Display Engine Configuration
#
CONFIG_DRM_AMD_DC=y
CONFIG_DRM_AMD_DC_DCN1_0=y
CONFIG_DRM_AMD_DC_DCN2_0=y
CONFIG_DRM_AMD_DC_DSC_SUPPORT=y
# CONFIG_DEBUG_KERNEL_DC is not set
# end of Display Engine Configuration

I think CONFIG_DRM_AMD_DC_DCN1_01 was an option back in kernel 5.2 and the new
option comes in in 5.3(rc). Kernel 5.3 is a necessity for this reason. You've
got the latest mesa etc, can I just check you also have the latest mesa drm
code too? 

If there is insistence to use amdgpu as a module, let's try setting a config
file to force it to be used. How about you create this file with a text editor
(or otherwise like nano/vim etc):

/usr/local/share/X11/xorg.conf.d/10-amdgpu.conf

and fill it with this (tab an indentation for lines 2 - 4):

Section "OutputClass"
        Identifier "AMDgpu"
        MatchDriver "amdgpu"
        Driver "amdgpu"
EndSection

After restarting, it should find the card and force it to use the amdgpu
module?

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