How to set up 2 monitors with 2 dedicated GPUs (one for each)

Support Graphics & Display
1

Hey everyone, first time posting here.

A little bit of context. I’m trying to set up a VFIO build with Manjaro. Here’s the output from neofetch.

848×424 43.3 KB

I have each monitor connected to each GPU (through HDMI). During the initial setup I connected the NVIDIA GPU in the x16 slot and the AMD GPU in the x8 slot (mobo layout). In the BIOS settings (currently F20 version) I’ve selected the x8 slot as the “initial display output” and activated IOMMU and SVM mode (virtualization).

In addition to this I’ve installed the NVIDIA proprietary drivers (version 450.66) following this guide.

My current problem is:

Only my right monitor is working. My left monitor shows a black screen with this:

[     0.000000] do_IRQ: 1.55 No irq handler for vector
[     0.000000] do_IRQ: 2.55 No irq handler for vector
[     0.000000] do_IRQ: 3.55 No irq handler for vector
[     0.000000] do_IRQ: 4.55 No irq handler for vector
[     0.000000] do_IRQ: 5.55 No irq handler for vector
[     0.000000] do_IRQ: 6.55 No irq handler for vector
[     0.000000] do_IRQ: 7.55 No irq handler for vector
[     0.000000] do_IRQ: 8.55 No irq handler for vector
[     0.000000] do_IRQ: 9.55 No irq handler for vector
[     0.000000] do_IRQ: 10.55 No irq handler for vector

What I’m hoping to be able to do is to have both monitors boot into Manjaro and when I initiate a Windows virtual machine, for it to take control of one of the monitors.

EDIT: To be more precise, this is a video demo of what I’d like to achieve.

I’m new to all this. Any guidance would be tremendous.

Here’s the output from:
inxi --full --admin --verbosity=7 --filter --no-host

System:    Kernel: 5.7.17-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
           parameters: BOOT_IMAGE=/boot/vmlinuz-5.7-x86_64 
           root=UUID=fb721319-4c66-429e-a6b1-d1f2e09c82c6 rw quiet apparmor=1 security=apparmor 
           resume=UUID=9f681852-8a31-4490-b1e7-66bdf2a90320 udev.log_priority=3 
           nouveau.modeset=0 amd_iommu=on 
           Desktop: KDE Plasma 5.19.4 tk: Qt 5.15.0 wm: kwin_x11 dm: SDDM Distro: Manjaro Linux 
Machine:   Type: Desktop System: Gigabyte product: X570 AORUS MASTER v: -CF serial: <filter> 
           Mobo: Gigabyte model: X570 AORUS MASTER v: x.x serial: <filter> 
           BIOS: American Megatrends v: F20 date: 07/07/2020 
Memory:    RAM: total: 31.37 GiB used: 2.72 GiB (8.7%) 
           RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:       Topology: 12-Core model: AMD Ryzen 9 3900X bits: 64 type: MT MCP arch: Zen 2 
           family: 17 (23) model-id: 71 (113) stepping: N/A microcode: 8701021 
           L2 cache: 6144 KiB bogomips: 182477 
           Speed: 3593 MHz min/max: 2200/3800 MHz boost: enabled Core speeds (MHz): 1: 3600 
           2: 2057 3: 2201 4: 2200 5: 3598 6: 2052 7: 2054 8: 2200 9: 2200 10: 2200 11: 2050 
           12: 2053 13: 2056 14: 3599 15: 2200 16: 2200 17: 2196 18: 2200 19: 2200 20: 2200 
           21: 2057 22: 2055 23: 3597 24: 2200 
           Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1 bmi2 bpext 
           cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy constant_tsc cpb cpuid 
           cqm cqm_llc cqm_mbm_local cqm_mbm_total cqm_occup_llc cr8_legacy cx16 cx8 de 
           decodeassists extapic extd_apicid f16c flushbyasid fma fpu fsgsbase fxsr fxsr_opt ht 
           hw_pstate ibpb ibs irperf lahf_lm lbrv lm mba mca mce misalignsse mmx mmxext monitor 
           movbe msr mtrr mwaitx nonstop_tsc nopl npt nrip_save nx osvw overflow_recov pae pat 
           pausefilter pclmulqdq pdpe1gb perfctr_core perfctr_llc perfctr_nb pfthreshold pge 
           pni popcnt pse pse36 rdpid rdpru rdrand rdseed rdt_a rdtscp rep_good sep sev sha_ni 
           skinit smap smca sme smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor svm 
           svm_lock syscall tce topoext tsc tsc_scale umip v_vmsave_vmload vgif vmcb_clean vme 
           vmmcall wbnoinvd wdt xgetbv1 xsave xsavec xsaveerptr xsaveopt xsaves 
           Vulnerabilities: Type: itlb_multihit status: Not affected 
           Type: l1tf status: Not affected 
           Type: mds status: Not affected 
           Type: meltdown status: Not affected 
           Type: spec_store_bypass 
           mitigation: Speculative Store Bypass disabled via prctl and seccomp 
           Type: spectre_v1 
           mitigation: usercopy/swapgs barriers and __user pointer sanitization 
           Type: spectre_v2 
           mitigation: Full AMD retpoline, IBPB: conditional, STIBP: conditional, RSB filling 
           Type: srbds status: Not affected 
           Type: tsx_async_abort status: Not affected 
Graphics:  Device-1: NVIDIA TU104 [GeForce RTX 2070 SUPER] vendor: ASUSTeK driver: nvidia 
           v: 450.66 alternate: nouveau,nvidia_drm bus ID: 0a:00.0 chip ID: 10de:1e84 
           Device-2: AMD Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] vendor: XFX Pine 
           driver: amdgpu v: kernel bus ID: 0b:00.0 chip ID: 1002:67df 
           Display: x11 server: X.Org 1.20.8 compositor: kwin_x11 driver: nvidia display ID: :0 
           screens: 1 
           Screen-1: 0 s-res: 2560x1080 s-dpi: 97 s-size: 670x283mm (26.4x11.1") 
           s-diag: 727mm (28.6") 
           Monitor-1: HDMI-0 res: 2560x1080 hz: 60 dpi: 97 size: 673x284mm (26.5x11.2") 
           diag: 730mm (28.8") 
           OpenGL: renderer: GeForce RTX 2070 SUPER/PCIe/SSE2 v: 4.6.0 NVIDIA 450.66 
           direct render: Yes 
Audio:     Device-1: NVIDIA TU104 HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel 
           bus ID: 0a:00.1 chip ID: 10de:10f8 
           Device-2: AMD Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] 
           vendor: XFX Pine driver: snd_hda_intel v: kernel bus ID: 0b:00.1 chip ID: 1002:aaf0 
           Device-3: AMD Starship/Matisse HD Audio vendor: Gigabyte driver: snd_hda_intel 
           v: kernel bus ID: 0d:00.4 chip ID: 1022:1487 
           Sound Server: ALSA v: k5.7.17-2-MANJARO 
Network:   Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel bus ID: 04:00.0 
           chip ID: 8086:2723 
           IF: wlp4s0 state: up mac: <filter> 
           IP v4: <filter> type: dynamic noprefixroute scope: global broadcast: <filter> 
           IP v6: <filter> type: noprefixroute scope: link 
           Device-2: Intel I211 Gigabit Network vendor: Gigabyte driver: igb v: 5.6.0-k 
           port: d000 bus ID: 05:00.0 chip ID: 8086:1539 
           IF: enp5s0 state: down mac: <filter> 
           Device-3: Realtek RTL8125 2.5GbE vendor: Gigabyte driver: N/A modules: r8169 
           port: c000 bus ID: 06:00.0 chip ID: 10ec:8125 
           WAN IP: <filter> 
Drives:    Local Storage: total: 931.51 GiB used: 18.59 GiB (2.0%) 
           SMART Message: Unable to run smartctl. Root privileges required. 
           ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 970 EVO Plus 1TB size: 931.51 GiB 
           block size: physical: 512 B logical: 512 B speed: 31.6 Gb/s lanes: 4 
           serial: <filter> rev: 2B2QEXM7 scheme: MBR 
           Message: No Optical or Floppy data was found. 
RAID:      Message: No RAID data was found. 
Partition: ID-1: / raw size: 922.71 GiB size: 907.23 GiB (98.32%) used: 18.59 GiB (2.0%) 
           fs: ext4 dev: /dev/nvme0n1p1 label: N/A uuid: fb721319-4c66-429e-a6b1-d1f2e09c82c6 
Swap:      Kernel: swappiness: 60 (default) cache pressure: 100 (default) 
           ID-1: swap-1 type: partition size: 8.80 GiB used: 0 KiB (0.0%) priority: -2 
           dev: /dev/nvme0n1p2 label: N/A uuid: 9f681852-8a31-4490-b1e7-66bdf2a90320 
Unmounted: Message: No unmounted partitions found. 
USB:       Hub: 1-0:1 info: Full speed (or root) Hub ports: 6 rev: 2.0 speed: 480 Mb/s 
           chip ID: 1d6b:0002 
           Device-1: 1-1:2 info: Integrated Express IT8297 RGB LED Controller type: Keyboard 
           driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 12 Mb/s chip ID: 048d:8297 
           Hub: 1-6:3 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s 
           chip ID: 05e3:0608 
           Hub: 2-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s 
           chip ID: 1d6b:0003 
           Hub: 3-0:1 info: Full speed (or root) Hub ports: 6 rev: 2.0 speed: 480 Mb/s 
           chip ID: 1d6b:0002 
           Device-1: 3-5:2 info: Intel AX200 Bluetooth type: Bluetooth driver: btusb 
           interfaces: 2 rev: 2.0 speed: 12 Mb/s chip ID: 8087:0029 
           Hub: 3-6:3 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s 
           chip ID: 05e3:0608 
           Device-1: 3-6.3:4 info: Logitech G600 Gaming Mouse type: Mouse,Keyboard 
           driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s chip ID: 046d:c24a 
           serial: <filter> 
           Device-2: 3-6.4:5 info: N/A type: Keyboard,HID driver: hid-generic,usbhid 
           interfaces: 2 rev: 1.1 speed: 12 Mb/s chip ID: feed:1307 
           Hub: 4-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s 
           chip ID: 1d6b:0003 
           Hub: 5-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 speed: 480 Mb/s 
           chip ID: 1d6b:0002 
           Hub: 6-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s 
           chip ID: 1d6b:0003 
           Hub: 7-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0 speed: 480 Mb/s 
           chip ID: 1d6b:0002 
           Hub: 8-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s 
           chip ID: 1d6b:0003 
Sensors:   System Temperatures: cpu: 51.8 C mobo: N/A 
           Fan Speeds (RPM): fan-1: 0 fan-2: 1216 fan-3: 0 
           GPU: device: nvidia screen: :0.0 temp: 39 C fan: 0% device: amdgpu temp: 41 C 
           fan: 526 
           Voltages: 12v: N/A 5v: N/A 3.3v: 1.69 vbat: 1.58 
Info:      Processes: 425 Uptime: 2h 21m Init: systemd v: 246 Compilers: gcc: 10.2.0 
           Packages: 1211 pacman: 1205 lib: 322 flatpak: 0 snap: 6 Shell: Bash v: 5.0.18 
           running in: konsole inxi: 3.1.05

mhwd -l

> 0000:0b:00.0 (0300:1002:67df) Display controller ATI Technologies Inc:
--------------------------------------------------------------------------------
                  NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
video-hybrid-amd-nvidia-450xx-prime            2019.10.25               false            PCI
video-hybrid-amd-nvidia-440xx-prime            2019.10.25               false            PCI
video-hybrid-amd-nvidia-435xx-prime            2019.10.25               false            PCI
           video-linux            2018.05.04                true            PCI
     video-modesetting            2020.01.13                true            PCI
            video-vesa            2017.03.12                true            PCI


> 0000:0a:00.0 (0300:10de:1e84) Display controller nVidia Corporation:
--------------------------------------------------------------------------------
                  NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
video-hybrid-amd-nvidia-450xx-prime            2019.10.25               false            PCI
video-hybrid-amd-nvidia-440xx-prime            2019.10.25               false            PCI
video-hybrid-amd-nvidia-435xx-prime            2019.10.25               false            PCI
    video-nvidia-450xx            2019.10.25               false            PCI
    video-nvidia-440xx            2019.10.25               false            PCI
    video-nvidia-435xx            2019.10.25               false            PCI
    video-nvidia-430xx            2019.10.25               false            PCI
           video-linux            2018.05.04                true            PCI
     video-modesetting            2020.01.13                true            PCI
            video-vesa            2017.03.12                true            PCI

lspci -v | grep -A 11 VGA

0a:00.0 VGA compatible controller: NVIDIA Corporation TU104 [GeForce RTX 2070 SUPER] (rev a1) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 8708
        Flags: bus master, fast devsel, latency 0, IRQ 163, IOMMU group 2
        Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
        Memory at b0000000 (64-bit, prefetchable) [size=256M]
        Memory at c0000000 (64-bit, prefetchable) [size=32M]
        I/O ports at f000 [size=128]
        Expansion ROM at fc000000 [virtual] [disabled] [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia

--
0b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef) (prog-if 00 [VGA controller])
        Subsystem: XFX Pine Group Inc. Radeon RX 570
        Flags: bus master, fast devsel, latency 0, IRQ 161, IOMMU group 2
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at e0000000 (64-bit, prefetchable) [size=2M]
        I/O ports at e000 [size=256]
        Memory at fcc00000 (32-bit, non-prefetchable) [size=256K]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

And finally xrandr --verbose

Screen 0: minimum 8 x 8, current 2560 x 1080, maximum 32767 x 32767
DP-0 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x1bd
        Timestamp:  9435
        Subpixel:   unknown
        Clones:    
        CRTCs:      0 1 2 3
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
                0 1 
        CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
        BorderDimensions: 4 
                supported: 4
        Border: 0 0 0 0 
                range: (0, 65535)
        SignalFormat: DisplayPort 
                supported: DisplayPort
        ConnectorType: DisplayPort 
        ConnectorNumber: 3 
        _ConnectorLocation: 3 
        non-desktop: 0 
                supported: 0, 1
DP-1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x1be
        Timestamp:  9435
        Subpixel:   unknown
        Clones:    
        CRTCs:      0 1 2 3
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
                0 1 
        CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
        BorderDimensions: 4 
                supported: 4
        Border: 0 0 0 0 
                range: (0, 65535)
        SignalFormat: TMDS 
                supported: TMDS
        ConnectorType: DisplayPort 
        ConnectorNumber: 3 
        _ConnectorLocation: 3 
        non-desktop: 0 
                supported: 0, 1
HDMI-0 connected primary 2560x1080+0+0 (0x1c0) normal (normal left inverted right x axis y axis) 673mm x 284mm
        Identifier: 0x1bf
        Timestamp:  9435
        Subpixel:   unknown
        Gamma:      1.0:1.0:1.0
        Brightness: 1.0
        Clones:    
        CRTC:       0
        CRTCs:      0 1 2 3
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
                0 1 
        CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
        EDID: 
                00ffffffffffff001e6df1592e8d0400
                081c010380431c78eaca95a6554ea126
                0f5054a54b80714f818081c0a9c0b300
                0101010101017e4800e0a0381f404040
                3a00a11c21000018023a801871382d40
                582c4500a11c2100001e000000fc004c
                4720554c545241574944450a000000fd
                00384b1e5a18000a20202020202001d2
                02031cf1499004031412051f01132309
                07078301000065030c001000023a8018
                71382d40582c450056512100001e011d
                8018711c1620582c250056512100009e
                011d007251d01e206e28550056512100
                001e8c0ad08a20e02d10103e96005651
                21000018000000ff003830384e545557
                38533238360a0000000000000000007a
        BorderDimensions: 4 
                supported: 4
        Border: 0 0 0 0 
                range: (0, 65535)
        SignalFormat: TMDS 
                supported: TMDS
        ConnectorType: HDMI 
        ConnectorNumber: 1 
        _ConnectorLocation: 1 
        non-desktop: 0 
                supported: 0, 1
  2560x1080 (0x1c0) 185.580MHz -HSync -VSync *current +preferred
        h: width  2560 start 2624 end 2688 total 2784 skew    0 clock  66.66KHz
        v: height 1080 start 1083 end 1093 total 1111           clock  60.00Hz
  1920x1080 (0x1c1) 148.500MHz +HSync +VSync
        h: width  1920 start 2008 end 2052 total 2200 skew    0 clock  67.50KHz
        v: height 1080 start 1084 end 1089 total 1125           clock  60.00Hz
  1920x1080 (0x1c2) 148.350MHz +HSync +VSync
        h: width  1920 start 2008 end 2052 total 2200 skew    0 clock  67.43KHz
        v: height 1080 start 1084 end 1089 total 1125           clock  59.94Hz
  1920x1080 (0x1c3) 148.500MHz +HSync +VSync
        h: width  1920 start 2448 end 2492 total 2640 skew    0 clock  56.25KHz
        v: height 1080 start 1084 end 1089 total 1125           clock  50.00Hz
  1680x1050 (0x1c4) 146.250MHz -HSync +VSync
        h: width  1680 start 1784 end 1960 total 2240 skew    0 clock  65.29KHz
        v: height 1050 start 1053 end 1059 total 1089           clock  59.95Hz
  1600x900 (0x1c5) 108.000MHz +HSync +VSync
        h: width  1600 start 1624 end 1704 total 1800 skew    0 clock  60.00KHz
        v: height  900 start  901 end  904 total 1000           clock  60.00Hz
  1280x1024 (0x1c6) 135.000MHz +HSync +VSync
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock  79.98KHz
        v: height 1024 start 1025 end 1028 total 1066           clock  75.02Hz
  1280x1024 (0x1c7) 108.000MHz +HSync +VSync
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock  63.98KHz
        v: height 1024 start 1025 end 1028 total 1066           clock  60.02Hz
  1280x720 (0x1c8) 74.250MHz +HSync +VSync
        h: width  1280 start 1390 end 1430 total 1650 skew    0 clock  45.00KHz
        v: height  720 start  725 end  730 total  750           clock  60.00Hz
  1280x720 (0x1c9) 74.180MHz +HSync +VSync
        h: width  1280 start 1390 end 1430 total 1650 skew    0 clock  44.96KHz
        v: height  720 start  725 end  730 total  750           clock  59.94Hz
  1280x720 (0x1ca) 74.250MHz +HSync +VSync
        h: width  1280 start 1720 end 1760 total 1980 skew    0 clock  37.50KHz
        v: height  720 start  725 end  730 total  750           clock  50.00Hz
  1152x864 (0x1cb) 108.000MHz +HSync +VSync
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock  67.50KHz
        v: height  864 start  865 end  868 total  900           clock  75.00Hz
  1024x768 (0x1cc) 78.750MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock  60.02KHz
        v: height  768 start  769 end  772 total  800           clock  75.03Hz
  1024x768 (0x1cd) 65.000MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  48.36KHz
        v: height  768 start  771 end  777 total  806           clock  60.00Hz
  800x600 (0x1ce) 49.500MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock  46.88KHz
        v: height  600 start  601 end  604 total  625           clock  75.00Hz
  800x600 (0x1cf) 40.000MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock  37.88KHz
        v: height  600 start  601 end  605 total  628           clock  60.32Hz
  720x576 (0x1d0) 27.000MHz -HSync -VSync
        h: width   720 start  732 end  796 total  864 skew    0 clock  31.25KHz
        v: height  576 start  581 end  586 total  625           clock  50.00Hz
  720x480 (0x1d1) 27.000MHz -HSync -VSync
        h: width   720 start  736 end  798 total  858 skew    0 clock  31.47KHz
        v: height  480 start  489 end  495 total  525           clock  59.94Hz
  640x480 (0x1d2) 31.500MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock  37.50KHz
        v: height  480 start  481 end  484 total  500           clock  75.00Hz
  640x480 (0x1d3) 25.170MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock  31.46KHz
        v: height  480 start  490 end  492 total  525           clock  59.93Hz
  640x480 (0x1d4) 25.175MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock  31.47KHz
        v: height  480 start  490 end  492 total  525           clock  59.94Hz
DP-2 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x1d5
        Timestamp:  9435
        Subpixel:   unknown
        Clones:    
        CRTCs:      0 1 2 3
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
                0 1 
        CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
        BorderDimensions: 4 
                supported: 4
        Border: 0 0 0 0 
                range: (0, 65535)
        SignalFormat: DisplayPort 
                supported: DisplayPort
        ConnectorType: DisplayPort 
        ConnectorNumber: 0 
        _ConnectorLocation: 0 
        non-desktop: 0 
                supported: 0, 1
DP-3 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x1d6
        Timestamp:  9435
        Subpixel:   unknown
        Clones:    
        CRTCs:      0 1 2 3
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
                0 1 
        CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
        BorderDimensions: 4 
                supported: 4
        Border: 0 0 0 0 
                range: (0, 65535)
        SignalFormat: TMDS 
                supported: TMDS
        ConnectorType: DisplayPort 
        ConnectorNumber: 0 
        _ConnectorLocation: 0 
        non-desktop: 0 
                supported: 0, 1
DP-4 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x1d7
        Timestamp:  9435
        Subpixel:   unknown
        Clones:    
        CRTCs:      0 1 2 3
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
                0 1 
        CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
        BorderDimensions: 4 
                supported: 4
        Border: 0 0 0 0 
                range: (0, 65535)
        SignalFormat: DisplayPort 
                supported: DisplayPort
        ConnectorType: DisplayPort 
        ConnectorNumber: 2 
        _ConnectorLocation: 2 
        non-desktop: 0 
                supported: 0, 1
DP-5 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x1d8
        Timestamp:  9435
        Subpixel:   unknown
        Clones:    
        CRTCs:      0 1 2 3
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
                0 1 
        CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
        BorderDimensions: 4 
                supported: 4
        Border: 0 0 0 0 
                range: (0, 65535)
        SignalFormat: TMDS 
                supported: TMDS
        ConnectorType: DisplayPort 
        ConnectorNumber: 2 
        _ConnectorLocation: 2 
        non-desktop: 0 
                supported: 0, 1

Thanks again for any help or comment

2

I don’t know how to do exactly this but for the basic setup you might want to look at creating a xinerama X config

3

Thanks for the input! Let me check on the link.

4

Hey @Takei since the last comment this is what I’ve done:

Since I manually installed the proprietary drivers from NVIDIA I uninstalled those and then I followed the procedure described to install the proprietary ones with mhwd because nouveau didn’t work for the RTX2070S.

I played around with xrandr and now this is the output from xrandr | grep ' connected':

HDMI-A-0 connected primary 2560x1080+0+0 (normal left inverted right x axis y axis) 673mm x 284mm
HDMI-1-0 connected 2560x1080+2560+0 673mm x 284mm

I’ve also activated ACS in my BIOS and now the IOMMU groups for both GPUs are different:

0a:00.0 VGA compatible controller: NVIDIA Corporation TU104 [GeForce RTX 2070 SUPER] (rev a1) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 8708
        Flags: bus master, fast devsel, latency 0, IRQ 163, IOMMU group 26
        Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
        Memory at b0000000 (64-bit, prefetchable) [size=256M]
        Memory at c0000000 (64-bit, prefetchable) [size=32M]
        I/O ports at f000 [size=128]
        Expansion ROM at fc000000 [virtual] [disabled] [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia

--
0b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef) (prog-if 00 [VGA controller])
        Subsystem: XFX Pine Group Inc. Radeon RX 570
        Flags: bus master, fast devsel, latency 0, IRQ 162, IOMMU group 27
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at e0000000 (64-bit, prefetchable) [size=2M]
        I/O ports at e000 [size=256]
        Memory at fcc00000 (32-bit, non-prefetchable) [size=256K]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

And after reading the docs for xorg, a troubleshooting article from AgentS (I don’t seem to be able to create links, sorry) and the xinarema X config doc, these are the X conf files I’ve created:

[feva@main ~]$ cd /etc/X11/xorg.conf.d/
[feva@main xorg.conf.d]$ ls -l
total 28
-rw-r--r-- 1 root root 266 ago 27 02:33 00-keyboard.conf
-rw-r--r-- 1 root root 147 ago 30 21:03 20-amdgpu.conf
-rw-r--r-- 1 root root 165 ago 30 21:45 20-nvidia.conf
-rw-r--r-- 1 root root 131 jun  6 03:06 30-touchpad.conf
-rw-r--r-- 1 root root 297 ago 30 20:36 40-screen-lg-left.conf
-rw-r--r-- 1 root root 303 ago 30 20:35 40-screen-lg-right.conf
-rw-r--r-- 1 root root 176 ago 30 20:18 90-serverlayout.conf

Which contain the following:

# 90-serverlayout.conf
Section "ServerLayout"
    Identifier "Main"
    Screen     0 "PrimaryScreen"
    Screen     1 "GamingScreen"  RightOf "PrimaryScreen"
    Option     "Xinerama" "1"
EndSection

# 40-screen-lg-right.conf
Section "Monitor"
    Identifier    "LGRightMon"
    Option        "dpms" "on"
EndSection

Section "Screen"
    Identifier    "GamingScreen"
    Device        "NVIDIARTX2070S"
    Monitor       "LGRightMon"
    DefaultDepth  24
    SubSection "Display"
        Depth     24
    EndSubSection
EndSection

# 40-screen-lg-left.conf
Section "Monitor"
    Identifier    "LGLeftMon"
    Option        "dpms" "on"
EndSection

Section "Screen"
    Identifier    "PrimaryScreen"
    Device        "AMDRX570"
    Monitor       "LGLeftMon"
    DefaultDepth  24
    SubSection "Display"
        Depth     24
    EndSubSection
EndSection

# 20-nvidia.conf
Section "Device"
    Identifier    "NVIDIARTX2070S"
    Driver        "nvidia"
    BusID         "PCI:10:0:0"
    Option        "DynamicTwinView" "FALSE"
EndSection

# 20-amdgpu.conf
Section "Device"
    Identifier "AMDRX570"
    Driver     "amdgpu"
    BusID      "PCI:11:0:0"
    Option     "DynamicTwinView" "FALSE"
EndSection

After doing this now I see my right monitor black, it’s not projecting anything (no mouse even) but I can still drag windows over there. My left monitor works correctly. So the right one is being detected but it just isn’t showing anything.

Could you expand a bit more on what I could try to get a basic setup working?

I’d appreciate it very much.

5

Sadly I’ve actually never dealt with something like this before. But looking closer some valuable hints can be gleamed from the description of the youtube video you linked.

I start Linux and X.org using the onboard gpu and display a simple xfce on both monitors(xinerama).
Whenever I feel like playing Windows games I disable the left monitor using xrandr and start qemu which uses the passed-through pcie gpu as vga.

Please do keep in mind though this is a very advanced configuration, likely involving some costum written scripts handling the transition of handing the second monitor to the virtual machine.
Maybe someone else has more experience than me in this department. Which is not hard to be honest. :sweat_smile:

6

I think /r/VFIO would be able to help you more as they specialize in this.

They also have a really nice wiki as well.

7

Thank you both for answering!

To be honest the VFIO set up, I think, should come after I get both monitors working. Sorry if I worded things confusingly.

Yes, my end objective is to have a VFIO build, but right now the more pressing matter would be getting both monitors to work. :sweat_smile: So for now I think the VFIO build can wait a bit, or at least until I fix the basic monitor setup, like you suggested initially @Takei, which is a great idea.

I’ve read several times the Xinerama part in the multihead article, and TBH I don’t see what am I missing.

The left monitor (which is connected to the AMD GPU) is working correctly, showing everything nicely (resolution and refresh rate are accurate). But the right monitor (which is connected to the NVIDIA GPU) is not working (although is shown as connected), just a black screen, I can seem to drag windows over there but no image is shown, not even the mouse pointer is shown on the right screen. So this confuses me a lot.

Is it perhaps that the Xinerama part in the article is outdated? I’m quite new to Manjaro and Linux in general, so I’m not very knowledgeable in how up to date any of the topics we discuss is.

For example, I can see this warning below the Xinarema section, perhaps there’s a more up to date version somewhere else?:

This article or section is out of date.
Reason: This section contains outdated information, mostly specific to Xinerama. (Discuss in Talk:Multihead#

Not sure where to go from here. If there’s any other console output I can provide or any other file I can modify or anything you think I can try, please do let me know, I’d really appreciate it. :smile:

8

Oh I just noticed something else. On the left monitor when I scroll up or down there is a screen tear in the middle of the screen. So not everything is great on the left monitor. It doesn’t seem to happen all the time, just sporadically.

Both monitors are the same brand and model: LG 25" LED Ultrawide (25um58)