Comment # 36
on bug 108781
from DanglingPointerException@gmail.com
I was getting similar unusable issues as everyone with 4.19.x with my R9-290X
so I decided to wait for 4.20
I installed 4.20.0 to see if the problem has been resolved but it has changed
to a different problem; it only renders one monitor and cannot detect the
monitor types.
Only one DVI and one HDMI port works, all the rest don't and show black
screens.
Using the only two ports that actually output a signal forces the two monitors
to mirror.
Going into display settings to identify monitors shows only 1 monitor hardware
detected and I am unable to identify monitors.
Rebooting doesn't fix problem.
Cold boot doesn't fix problem.
These problems do NOT exist with Linux Kernel 4.18.20. It just worked.
I would really appreciate a resolution to this with future Kernels 4.20.x! I'm
switching back to Linux Kernel 4.18.20.
# Kernel and command line
-----------
kernel: Linux version 4.20.0-042000-generic (kernel@tangerine) (gcc version
8.2.0 (Ubuntu 8.2.0-12ubuntu1)) #201812232030 SMP Mon Dec 24 01:32:58 UTC 2018
kernel: Command line: BOOT_IMAGE=/vmlinuz-4.20.0-042000-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash radeon.si_support=0
radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1 amdgpu.dc=1
# "lspci -v" for Linux Kernel 4.20.0
-----------
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Hawaii XT / Grenada XT [Radeon R9 290X/390X] (prog-if 00 [VGA controller])
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii XT / Grenada
XT [Radeon R9 290X/390X]
Flags: fast devsel, IRQ 16
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at ef800000 (64-bit, prefetchable) [size=8M]
I/O ports at ae00 [size=256]
Memory at fb980000 (32-bit, non-prefetchable) [size=256K]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
Capabilities: [150] Advanced Error Reporting
Capabilities: [270] #19
Capabilities: [2b0] Address Translation Service (ATS)
Capabilities: [2c0] Page Request Interface (PRI)
Capabilities: [2d0] Process Address Space ID (PASID)
Kernel modules: radeon, amdgpu
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii HDMI Audio
[Radeon R9 290/290X / 390/390X]
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii HDMI Audio
[Radeon R9 290/290X / 390/390X]
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at fb9fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
Capabilities: [150] Advanced Error Reporting
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
# "journalctl -b | grep drm" output for last boot Kernel 4.20 only one display
working. Other display forced mirroring. Other GPU ports not working.
---------------------------------------
[drm] amdgpu kernel modesetting enabled.
[drm] initializing kernel modesetting (HAWAII 0x1002:0x67B0 0x1002:0x0B00
0x00).
[drm] register mmio base: 0xFB980000
[drm] register mmio size: 262144
[drm] add ip block number 0 <cik_common>
[drm] add ip block number 1 <gmc_v7_0>
[drm] add ip block number 2 <cik_ih>
[drm] add ip block number 3 <gfx_v7_0>
[drm] add ip block number 4 <cik_sdma>
[drm] add ip block number 5 <powerplay>
[drm] add ip block number 6 <dm>
[drm] add ip block number 7 <uvd_v4_2>
[drm] add ip block number 8 <vce_v2_0>
[drm] vm size is 128 GB, 2 levels, block size is 10-bit, fragment size is 9-bit
[drm:gmc_v7_0_sw_init [amdgpu]] *ERROR* Failed to load mc firmware!
[drm:amdgpu_device_init.cold.31 [amdgpu]] *ERROR* sw_init of IP block
<gmc_v7_0> failed -2
[drm] amdgpu: finishing device.
# "journalctl | grep drm" output for last SUCCESSFUL boot of linux Kernel
4.18.20. All displays working. Everything worked ok. Here for reference
---------------------------------------
[drm] amdgpu kernel modesetting enabled.
fb: switching to amdgpudrmfb from VESA VGA
[drm] initializing kernel modesetting (HAWAII 0x1002:0x67B0 0x1002:0x0B00
0x00).
[drm] register mmio base: 0xFB980000
[drm] register mmio size: 262144
[drm] probing gen 2 caps for device 8086:151 = 261ac83/e
[drm] probing mlw for device 8086:151 = 261ac83
[drm] add ip block number 0 <cik_common>
[drm] add ip block number 1 <gmc_v7_0>
[drm] add ip block number 2 <cik_ih>
[drm] add ip block number 3 <ci_dpm>
[drm] add ip block number 4 <dm>
[drm] add ip block number 5 <gfx_v7_0>
[drm] add ip block number 6 <cik_sdma>
[drm] add ip block number 7 <uvd_v4_2>
[drm] add ip block number 8 <vce_v2_0>
[drm] vm size is 64 GB, 2 levels, block size is 10-bit, fragment size is 9-bit
[drm] Detected VRAM RAM=4096M, BAR=256M
[drm] RAM width 512bits GDDR5
[drm] amdgpu: 4096M of VRAM memory ready
[drm] amdgpu: 4096M of GTT memory ready.
[drm] GART: num cpu pages 262144, num gpu pages 262144
[drm] PCIE GART of 1024M enabled (table at 0x000000F4007E9000).
[drm] Internal thermal controller with fan control
[drm] Invalid PCC GPIO: 13!
[drm] amdgpu: dpm initialized
[drm] Found UVD firmware Version: 1.64 Family ID: 9
[drm] Found VCE firmware Version: 50.10 Binary ID: 2
[drm] PCIE gen 3 link speeds already enabled
[drm] dce110_link_encoder_construct: Failed to get encoder_cap_info from VBIOS
with error code 4!
[drm] dce110_link_encoder_construct: Failed to get encoder_cap_info from VBIOS
with error code 4!
[drm] dce110_link_encoder_construct: Failed to get encoder_cap_info from VBIOS
with error code 4!
[drm] Display Core initialized with v3.1.44!
[drm] SADs count is: -524, don't need to read it
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[drm] Driver supports precise vblank timestamp query.
[drm] UVD initialized successfully.
[drm] VCE initialized successfully.
[drm] fb mappable at 0xD0BD0000
[drm] vram apper at 0xD0000000
[drm] size 8294400
[drm] fb depth is 24
[drm] pitch is 7680
fbcon: amdgpudrmfb (fb0) is primary device
[drm] dce_get_required_clocks_state: clocks unsupported disp_clk 681000 pix_clk
148500
amdgpu 0000:01:00.0: fb0: amdgpudrmfb frame buffer device
[drm] Initialized amdgpu 3.26.0 20150101 for 0000:01:00.0 on minor 0
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