Bug 112103

Summary: Asrock 5700 XT Taichi fails to boot/hangs when a fifth monitor is connected
Product: DRI Reporter: erik.brandsberg
Component: DRM/AMDgpuAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED MOVED QA Contact:
Severity: major    
Priority: high    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
i915 platform: i915 features:
Description Flags
Screenshot of error on boot none

Description erik.brandsberg 2019-10-22 20:05:42 UTC
Created attachment 145796 [details]
Screenshot of error on boot

Linux Kernel: 5.3.2-050302-generic
Mesa:  OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.3.0-devel (git-a9a9249 2019-10-21 bionic-oibaf-ppa)

BenQ XL2420TX (on DP)
BenQ XL2420T  (on DP) (Two monitors)
LG 34UM61-P   (on HDMI-1)
Sony SDM-HX73 (on HDMI-2 connected to DVI)

Attached image has the output when booted clean with all five monitors attached.
Comment 1 erik.brandsberg 2019-11-12 18:44:02 UTC
I believe I have found the issue (although need to setup to compile to test).  In https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/amd/amdgpu/amdgpu.h, line 187:

I believe this should be set to 6 to support the Asrock 5700 XT Taichi, or any other card that is released with more than four ports.
Comment 2 Martin Peres 2019-11-19 09:58:45 UTC
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