[Bug 204725] black screen

[bugzilla-daemon at bugzilla.kernel.org]

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

--- Comment #22 from Ant (untaintableangel at hotmail.co.uk) ---
2 things I notice are:

Xorg complains it can't find LLVM 9 or higher. I notice you said you have llvm
trunk (10), could you try installing version 9 to see if that appeases it?

"radeonsi: Navi family support requires LLVM 9 or higher"


Worryingly, I also notice some oddities about your card's information.

[    50.685] (--) AMDGPU(0): Chipset: "Unknown AMD Radeon GPU" (ChipID =
0x731f)


You've not done any bios tweaking on the card have you? I wonder if the fix is
to have your card's ID be accepted?


What's the output of your
/etc/X11/xorg.conf.d/20opengl.conf

file look like?


For comparison, I have the sapphire pulse 5700 and my output looks like:

0f:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Navi 10 [1002:731f] (rev c4) (prog-if 00 [VGA controller])
        Subsystem: Sapphire Technology Limited Navi 10 [1da2:e408]
        Flags: bus master, fast devsel, latency 0, IRQ 90
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Memory at f0000000 (64-bit, prefetchable) [size=2M]
        I/O ports at f000 [size=256]
        Memory at fcc00000 (32-bit, non-prefetchable) [size=512K]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu


glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: AMD NAVI10 (DRM 3.33.0, 5.3.0-rc6-badidle+, LLVM 9.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.3.0-devel
(git-2023716 2019-08-31 eoan-oibaf-ppa)
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.3.0-devel
(git-2023716 2019-08-31 eoan-oibaf-ppa)
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 19.3.0-devel (git-2023716
2019-08-31 eoan-oibaf-ppa)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:


(My kernel's called 'badidle' cause there's a bug atm where the rx5700 is
pulling ~30W at idle instead of 8W because the memory clocks are being maxed
instead of changing dynamically because it is currently causing annoying
flicker. The fix is probably upstream in agd5f's amd-staging branch, but I'm
sticking to kernel.org)



I'm also beginning to consider the idea that you may have inadvertently set
something in your .config that's interfering, so again for comparison and to
save some grey hair, here is the relevent stuff from my .config apart from what
you've seen so far.


# CONFIG_DRM_RADEON is not set
CONFIG_DRM_AMDGPU=m
# CONFIG_DRM_AMDGPU_SI is not set
# CONFIG_DRM_AMDGPU_CIK is not set
CONFIG_DRM_AMDGPU_USERPTR=y

# Graphics support
#
# CONFIG_AGP is not set
# CONFIG_VGA_ARB is not set
# CONFIG_VGA_SWITCHEROO is not set
CONFIG_DRM=y
# CONFIG_DRM_DP_AUX_CHARDEV is not set
# CONFIG_DRM_DEBUG_MM is not set
# CONFIG_DRM_DEBUG_SELFTEST is not set
CONFIG_DRM_KMS_HELPER=m
# CONFIG_DRM_FBDEV_EMULATION is not set
CONFIG_DRM_LOAD_EDID_FIRMWARE=y
# CONFIG_DRM_DP_CEC is not set
CONFIG_DRM_TTM=m
CONFIG_DRM_SCHED=m

Critically, I have CONFIG_FB set to N (nothing for framebuffer devices and all
adjacent options off so I don't put in any support for it.) I'm not sure why I
stopped, but it works well without it and I assumed it was legacy stuff. As a
last resort, you could try mimicing my file lol

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