[Bug 208573] New: Black screen on boot if two displays plugged in with NAVI 10

[Bug 208573] New: Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

            Bug ID: 208573
           Summary: Black screen on boot if two displays plugged in with
                    NAVI 10
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.7.8-6-MANJARO
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: thomas.langkamp@medicalschool-hamburg.de
        Regression: No

With Radeon R9 Fury X and 2 4k displays @60hz, one LG TV@HDMI, one iiyama@DP =>
everything fine

With new Radeon 5700 from Asus 
=> black screen after grub menu and after some time the gpu-fans spin up a bit
and the mainboard debug LED starts flashing. Then reset-button is the only
option.

With new Radeon 5700 XT from Gigabyte 
=> same

So I can already rule out a hardware fault.

What helps:
- Starting a recovery boot entry in grub 
- OR disconecting one display before reboot

Both 5700 cards work always fine with only one display connected. If I connect
the second display later, when I am already on desktop environment - also
everything works. 

Other things I tried
- changing to 30 hz then reboot
- kernels from 5.4 onwards
- different ports on the gpu
- DP to HDMI-adapter


sudo dmesg | grep amdgpu
[sudo] Passwort für tom: 
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.7-x86_64
root=UUID=74886ca0-4a71-4692-aa0c-b2a539ec6b48 rw quiet loglevel=3
rd.systemd.show_status=auto rd.udev.log_priority=3
amdgpu.ppfeaturemask=0xfffd7fff resume=LABEL=swap libahci.ignore_sss=1
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.7-x86_64
root=UUID=74886ca0-4a71-4692-aa0c-b2a539ec6b48 rw quiet loglevel=3
rd.systemd.show_status=auto rd.udev.log_priority=3
amdgpu.ppfeaturemask=0xfffd7fff resume=LABEL=swap libahci.ignore_sss=1
[    2.597324] [drm] amdgpu kernel modesetting enabled.
[    2.597526] fb0: switching to amdgpudrmfb from EFI VGA
[    2.597631] amdgpu 0000:0d:00.0: vgaarb: deactivate vga console
[    2.597664] amdgpu 0000:0d:00.0: enabling device (0006 -> 0007)
[    2.615476] amdgpu 0000:0d:00.0: VRAM: 8176M 0x0000008000000000 -
0x00000081FEFFFFFF (8176M used)
[    2.615477] amdgpu 0000:0d:00.0: GART: 512M 0x0000000000000000 -
0x000000001FFFFFFF
[    2.615580] [drm] amdgpu: 8176M of VRAM memory ready
[    2.615583] [drm] amdgpu: 8176M of GTT memory ready.
[    3.433349] amdgpu 0000:0d:00.0: RAS: optional ras ta ucode is not available
[    3.528083] snd_hda_intel 0000:0d:00.1: bound 0000:0d:00.0 (ops
amdgpu_dm_audio_component_bind_ops [amdgpu])
[    3.628396] fbcon: amdgpudrmfb (fb0) is primary device
[    3.739398] amdgpu 0000:0d:00.0: fb0: amdgpudrmfb frame buffer device
[    3.783482] amdgpu 0000:0d:00.0: ring gfx_0.0.0 uses VM inv eng 0 on hub 0
[    3.783485] amdgpu 0000:0d:00.0: ring comp_1.0.0 uses VM inv eng 1 on hub 0
[    3.783487] amdgpu 0000:0d:00.0: ring comp_1.1.0 uses VM inv eng 4 on hub 0
[    3.783489] amdgpu 0000:0d:00.0: ring comp_1.2.0 uses VM inv eng 5 on hub 0
[    3.783491] amdgpu 0000:0d:00.0: ring comp_1.3.0 uses VM inv eng 6 on hub 0
[    3.783492] amdgpu 0000:0d:00.0: ring comp_1.0.1 uses VM inv eng 7 on hub 0
[    3.783494] amdgpu 0000:0d:00.0: ring comp_1.1.1 uses VM inv eng 8 on hub 0
[    3.783496] amdgpu 0000:0d:00.0: ring comp_1.2.1 uses VM inv eng 9 on hub 0
[    3.783498] amdgpu 0000:0d:00.0: ring comp_1.3.1 uses VM inv eng 10 on hub 0
[    3.783499] amdgpu 0000:0d:00.0: ring kiq_2.1.0 uses VM inv eng 11 on hub 0
[    3.783501] amdgpu 0000:0d:00.0: ring sdma0 uses VM inv eng 12 on hub 0
[    3.783503] amdgpu 0000:0d:00.0: ring sdma1 uses VM inv eng 13 on hub 0
[    3.783505] amdgpu 0000:0d:00.0: ring vcn_dec uses VM inv eng 0 on hub 1
[    3.783506] amdgpu 0000:0d:00.0: ring vcn_enc0 uses VM inv eng 1 on hub 1
[    3.783508] amdgpu 0000:0d:00.0: ring vcn_enc1 uses VM inv eng 4 on hub 1
[    3.783510] amdgpu 0000:0d:00.0: ring jpeg_dec uses VM inv eng 5 on hub 1
[    3.784426] [drm] Initialized amdgpu 3.37.0 20150101 for 0000:0d:00.0 on
minor 0
[ 2050.217010] amdgpu 0000:0d:00.0: RAS: optional ras ta ucode is not available
[ 2050.416499] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[ 2050.925049] [drm:retrieve_link_cap [amdgpu]] *ERROR* retrieve_link_cap: Read
dpcd data failed.
[ 2050.934845] amdgpu 0000:0d:00.0: ring gfx_0.0.0 uses VM inv eng 0 on hub 0
[ 2050.934846] amdgpu 0000:0d:00.0: ring comp_1.0.0 uses VM inv eng 1 on hub 0
[ 2050.934846] amdgpu 0000:0d:00.0: ring comp_1.1.0 uses VM inv eng 4 on hub 0
[ 2050.934847] amdgpu 0000:0d:00.0: ring comp_1.2.0 uses VM inv eng 5 on hub 0
[ 2050.934847] amdgpu 0000:0d:00.0: ring comp_1.3.0 uses VM inv eng 6 on hub 0
[ 2050.934848] amdgpu 0000:0d:00.0: ring comp_1.0.1 uses VM inv eng 7 on hub 0
[ 2050.934849] amdgpu 0000:0d:00.0: ring comp_1.1.1 uses VM inv eng 8 on hub 0
[ 2050.934849] amdgpu 0000:0d:00.0: ring comp_1.2.1 uses VM inv eng 9 on hub 0
[ 2050.934850] amdgpu 0000:0d:00.0: ring comp_1.3.1 uses VM inv eng 10 on hub 0
[ 2050.934850] amdgpu 0000:0d:00.0: ring kiq_2.1.0 uses VM inv eng 11 on hub 0
[ 2050.934851] amdgpu 0000:0d:00.0: ring sdma0 uses VM inv eng 12 on hub 0
[ 2050.934851] amdgpu 0000:0d:00.0: ring sdma1 uses VM inv eng 13 on hub 0
[ 2050.934852] amdgpu 0000:0d:00.0: ring vcn_dec uses VM inv eng 0 on hub 1
[ 2050.934852] amdgpu 0000:0d:00.0: ring vcn_enc0 uses VM inv eng 1 on hub 1
[ 2050.934853] amdgpu 0000:0d:00.0: ring vcn_enc1 uses VM inv eng 4 on hub 1
[ 2050.934853] amdgpu 0000:0d:00.0: ring jpeg_dec uses VM inv eng 5 on hub 1



lspci -v
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Root Complex
        Subsystem: ASRock Incorporation Device 1450
        Flags: fast devsel

00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-1fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) PCIe GPP Bridge (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 25
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: fcf00000-fcffffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) PCIe GPP Bridge (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 26
        Bus: primary=00, secondary=02, subordinate=0a, sec-latency=0
        I/O behind bridge: 0000f000-0000ffff [size=4K]
        Memory behind bridge: fcc00000-fcdfffff [size=2M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-1fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-1fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) PCIe GPP Bridge (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 27
        Bus: primary=00, secondary=0b, subordinate=0d, sec-latency=0
        I/O behind bridge: 0000e000-0000efff [size=4K]
        Memory behind bridge: fca00000-fcbfffff [size=2M]
        Prefetchable memory behind bridge: 00000000e0000000-00000000f01fffff
[size=258M]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-1fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-1fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Internal PCIe GPP Bridge 0 to Bus B (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 28
        Bus: primary=00, secondary=0e, subordinate=0e, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: fc700000-fc9fffff [size=3M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-1fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Internal PCIe GPP Bridge 0 to Bus B (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 30
        Bus: primary=00, secondary=0f, subordinate=0f, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: fce00000-fcefffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 59)
        Subsystem: ASRock Incorporation Device 790b
        Flags: 66MHz, medium devsel
        Kernel driver in use: piix4_smbus
        Kernel modules: i2c_piix4, sp5100_tco

00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
        Subsystem: ASRock Incorporation Device 790e
        Flags: bus master, 66MHz, medium devsel, latency 0

00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 0
        Flags: fast devsel

00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 1
        Flags: fast devsel

00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 2
        Flags: fast devsel

00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 3
        Flags: fast devsel
        Kernel driver in use: k10temp
        Kernel modules: k10temp

00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 4
        Flags: fast devsel

00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 5
        Flags: fast devsel

00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 6
        Flags: fast devsel

00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Data Fabric: Device 18h; Function 7
        Flags: fast devsel

01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD
Controller SM981/PM981/PM983 (prog-if 02 [NVM Express])
        Subsystem: Samsung Electronics Co Ltd Device a801
        Flags: bus master, fast devsel, latency 0, IRQ 45, NUMA node 0
        Memory at fcf00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: nvme

02:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43d0 (rev 01)
(prog-if 30 [XHCI])
        Subsystem: ASRock Incorporation Device 43d0
        Flags: bus master, fast devsel, latency 0, IRQ 29
        Memory at fcda0000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci

02:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset
SATA Controller (rev 01) (prog-if 01 [AHCI 1.0])
        Subsystem: ASRock Incorporation Device 43c8
        Flags: bus master, fast devsel, latency 0, IRQ 47
        Memory at fcd80000 (32-bit, non-prefetchable) [size=128K]
        Expansion ROM at fcd00000 [disabled] [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: ahci

02:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Bridge (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 32
        Bus: primary=02, secondary=03, subordinate=0a, sec-latency=0
        I/O behind bridge: 0000f000-0000ffff [size=4K]
        Memory behind bridge: fcc00000-fccfffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

03:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Port (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 33
        Bus: primary=03, secondary=04, subordinate=04, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: [disabled]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

03:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Port (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 35
        Bus: primary=03, secondary=05, subordinate=05, sec-latency=0
        I/O behind bridge: 0000f000-0000ffff [size=4K]
        Memory behind bridge: fcc00000-fccfffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

03:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Port (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 36
        Bus: primary=03, secondary=06, subordinate=06, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: [disabled]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

03:03.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Port (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 38
        Bus: primary=03, secondary=07, subordinate=07, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: [disabled]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

03:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Port (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 39
        Bus: primary=03, secondary=08, subordinate=08, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: [disabled]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

03:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Port (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 40
        Bus: primary=03, secondary=09, subordinate=09, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: [disabled]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

03:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe
Port (rev 01) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 41
        Bus: primary=03, secondary=0a, subordinate=0a, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: [disabled]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

05:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection
(rev 03)
        Subsystem: ASRock Incorporation Device 1539
        Flags: bus master, fast devsel, latency 0, IRQ 34
        Memory at fcc00000 (32-bit, non-prefetchable) [size=128K]
        I/O ports at f000 [size=32]
        Memory at fcc20000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: igb
        Kernel modules: igb

0b:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream
Port of PCI Express Switch (rev c1) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 43
        Memory at fcb00000 (32-bit, non-prefetchable) [size=16K]
        Bus: primary=0b, secondary=0c, subordinate=0d, sec-latency=0
        I/O behind bridge: 0000e000-0000efff [size=4K]
        Memory behind bridge: fca00000-fcafffff [size=1M]
        Prefetchable memory behind bridge: 00000000e0000000-00000000f01fffff
[size=258M]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

0c:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL
Downstream Port of PCI Express Switch (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 44
        Bus: primary=0c, secondary=0d, subordinate=0d, sec-latency=0
        I/O behind bridge: 0000e000-0000efff [size=4K]
        Memory behind bridge: fca00000-fcafffff [size=1M]
        Prefetchable memory behind bridge: 00000000e0000000-00000000f01fffff
[size=258M]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

0d:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi
10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] (rev c1) (prog-if 00 [VGA
controller])
        Subsystem: Gigabyte Technology Co., Ltd Device 2316
        Flags: bus master, fast devsel, latency 0, IRQ 111
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Memory at f0000000 (64-bit, prefetchable) [size=2M]
        I/O ports at e000 [size=256]
        Memory at fca00000 (32-bit, non-prefetchable) [size=512K]
        Expansion ROM at fca80000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

0d:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 HDMI Audio
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 HDMI Audio
        Flags: bus master, fast devsel, latency 0, IRQ 110
        Memory at fcaa0000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

0e:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc.
[AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function
        Subsystem: Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2
PCIe Dummy Function
        Flags: fast devsel
        Capabilities: <access denied>

0e:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h
(Models 00h-0fh) Platform Security Processor
        Subsystem: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) Platform Security Processor
        Flags: bus master, fast devsel, latency 0, IRQ 99
        Memory at fc800000 (32-bit, non-prefetchable) [size=1M]
        Memory at fc900000 (32-bit, non-prefetchable) [size=8K]
        Capabilities: <access denied>
        Kernel driver in use: ccp
        Kernel modules: ccp

0e:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Zeppelin USB 3.0
Host controller (prog-if 30 [XHCI])
        Subsystem: ASRock Incorporation Device 7914
        Flags: bus master, fast devsel, latency 0, IRQ 90
        Memory at fc700000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci

0f:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc.
[AMD] Zeppelin/Renoir PCIe Dummy Function
        Subsystem: Advanced Micro Devices, Inc. [AMD] Zeppelin/Renoir PCIe
Dummy Function
        Flags: fast devsel
        Capabilities: <access denied>

0f:00.2 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller
[AHCI mode] (rev 51) (prog-if 01 [AHCI 1.0])
        Subsystem: ASRock Incorporation Device 7901
        Flags: bus master, fast devsel, latency 0, IRQ 49
        Memory at fce08000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>
        Kernel driver in use: ahci

0f:00.3 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models
00h-0fh) HD Audio Controller
        Subsystem: ASRock Incorporation Device 2220
        Flags: bus master, fast devsel, latency 0, IRQ 46
        Memory at fce00000 (32-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #1 from Alex Deucher (alexdeucher@gmail.com) ---
Please attach your full dmesg output and xorg log (if using X).

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #2 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
Created attachment 290305
  --> https://bugzilla.kernel.org/attachment.cgi?id=290305&action=edit
dmesg just after plugging in second display

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #3 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
Created attachment 290307
  --> https://bugzilla.kernel.org/attachment.cgi?id=290307&action=edit
xorg.log just after connecting second display

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #4 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
Maybe it has something to do with my X470 Board not being PCI-E 4.0?
I switched to a better PSU today, but that did not help either.
Both screens completely black until I pull one cable and reboot.

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #5 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
Created attachment 290817
  --> https://bugzilla.kernel.org/attachment.cgi?id=290817&action=edit
reproducable error messages after suspend, then reboot

This error message is reproducable if I boot
- with 1 display
- on KDE connect second display
- suspend, then wakeup (both screens work normal until this point)
- then reboot => error message, then black screen on one and green screen on
secondary display.

Because my Mainboard got a new Bios I tried that with no effect. But I
realized, that I get the black screen only if I dial in the 3200 Mhz XMP
Profile of my RAM. If not - there is no black screen with 2 displays on the new
BIOS. On the old BIOS XMP Profile or not made no difference. Thus the mainboard
may be part of the problem.

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|5.7.8-6-MANJARO             |5.8.0-2-MANJARO

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #6 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
(In reply to Thomas Langkamp from comment #5)
> Created attachment 290817 [details]
> reproducable error messages after suspend, then reboot
> 
> This error message is reproducable if I boot
> - with 1 display
> - on KDE connect second display
> - suspend, then wakeup (both screens work normal until this point)
> - then reboot => error message, then black screen on one and green screen on
> secondary display.
> 
> Because my Mainboard got a new Bios I tried that with no effect. But I
> realized, that I get the black screen only if I dial in the 3200 Mhz XMP
> Profile of my RAM. If not - there is no black screen with 2 displays on the
> new BIOS. On the old BIOS XMP Profile or not made no difference. Thus the
> mainboard may be part of the problem.

Still, Mainboard being part of the problem or not - all was fine til I switched
the Fury X to the 5700 XT (first an ASROCK, now a Gigabyte one).

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #7 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
I found a similar bug here:
https://bugzilla.kernel.org/show_bug.cgi?id=206903#c51

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #8 from Alex Deucher (alexdeucher@gmail.com) ---
Do you only get the MCE errors when you set the XMP profile?

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #9 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
Yes. With the new BIOS this is reproducible only with XMP enabled.

In the other bugreport I read about

amdgpu.ppfeaturemask=0xffffbffd

I just tried it. Until now this seems to fix it, even with XMP profile 
enabled! I will report back if I get a black screen again.
As far as I know with 2 monitors attached the VRAM is always clocked 
high, so it makes sense that disabling the VRAM power management through 
this featuremask works around the issue. But surely a proper fix would 
be appreciated.

Am 10.08.20 um 16:33 schrieb bugzilla-daemon@bugzilla.kernel.org:
> https://bugzilla.kernel.org/show_bug.cgi?id=208573
> 
> --- Comment #8 from Alex Deucher (alexdeucher@gmail.com) ---
> Do you only get the MCE errors when you set the XMP profile?
>

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #10 from Alex Deucher (alexdeucher@gmail.com) ---
You can probably mark this bug as a duplicate of 208573 then.

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #11 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
206903

*** This bug has been marked as a duplicate of bug 206903 ***

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #12 from Thomas Langkamp (thomas.langkamp@medicalschool-hamburg.de) ---
This bug is gone!
I think since 5.8.1 or so.
I waited a couple of weeks to see if it comes back, but I can now boot, suspend
and whatever with both screens connected.
Cheers :D

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

Andrej Podzimek (andrej@podzimek.org) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |andrej@podzimek.org

--- Comment #13 from Andrej Podzimek (andrej@podzimek.org) ---
And here we go, the bug is back in 5.12.5 or so (probably also in earlier 5.12
kernels).

In my case this occurs with 4 virtual and 2 physical screens connected (dual 5k
MST) and a Radeon Pro W5700.

The issue this was deduplicated against has lots of extra investigation.

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[Bug 208573] Black screen on boot if two displays plugged in with NAVI 10

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208573

--- Comment #14 from Alex Deucher (alexdeucher@gmail.com) ---
Can you bisect?
https://www.kernel.org/doc/html/latest/admin-guide/bug-bisect.html

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