No hdmi signal after waking from suspend

I just bought a Samsung 27 inch 4k monitor and got everything scaling fine but here is the problem. The monitor doesn’t receive a signal when I wake the system from suspend and the only thing that works is rebooting, REISUB or hard reboot. As soon as I reboot the monitor detects a signal again.

I switched HDMI cables, searched for a firmware update, changed kernels, looked in the menu of the monitor and disabled all eco stuff but no dice. This only happens on this display.
I found this online. Some people in that thread complain about a similar issue as I’m experiencing, different model though.

I already contacted the seller, they said they’ll look into it and get back to me so I’ll give it a couple of days and if the issue isn’t resolved I’ll return the product.

Anybody got an idea what else I can try?

My system:

EndeavourOS➜  ~  ᐅ  inxi -Faazy
System:
  Kernel: 6.0.2-arch1-1 arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-linux
    root=UUID=dca1f920-7295-4401-9683-4360cedf389d rw loglevel=3 nowatchdog
    nmi_nowatchdog=0 mitigations=off nvme_load=YES nvidia-drm.modeset=1
  Desktop: bspwm v: 0.9.10 info: polybar vt: 7 dm: LightDM v: 1.32.0
    Distro: EndeavourOS base: Arch Linux
Machine:
  Type: Desktop System: Acer product: Aspire XC-885 v: N/A
    serial: <superuser required> Chassis: type: 3 serial: <superuser required>
  Mobo: Acer model: Aspire XC-885(DCH) v: V:1.1 serial: <superuser required>
    UEFI: American Megatrends v: R01-C3 date: 04/08/2020
Battery:
  Device-1: hidpp_battery_0 model: Logitech M720 Triathlon Multi-Device Mouse
    serial: <filter> charge: 55% (should be ignored) rechargeable: yes
    status: discharging
CPU:
  Info: model: Intel Core i7-9700F bits: 64 type: MCP arch: Coffee Lake
    gen: core 9 level: v3 note: check built: 2018 process: Intel 14nm family: 6
    model-id: 0x9E (158) stepping: 0xD (13) microcode: 0xF0
  Topology: cpus: 1x cores: 8 smt: <unsupported> cache: L1: 512 KiB
    desc: d-8x32 KiB; i-8x32 KiB L2: 2 MiB desc: 8x256 KiB L3: 12 MiB
    desc: 1x12 MiB
  Speed (MHz): avg: 1900 high: 3000 min/max: 800/4700 scaling:
    driver: intel_pstate governor: powersave cores: 1: 3000 2: 800 3: 800 4: 800
    5: 800 6: 3000 7: 3000 8: 3000 bogomips: 48016
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Vulnerable
  Type: retbleed status: Vulnerable
  Type: spec_store_bypass status: Vulnerable
  Type: spectre_v1 status: Vulnerable: __user pointer sanitization and
    usercopy barriers only; no swapgs barriers
  Type: spectre_v2 status: Vulnerable, IBPB: disabled, STIBP: disabled,
    PBRSB-eIBRS: Vulnerable
  Type: srbds status: Vulnerable
  Type: tsx_async_abort mitigation: TSX disabled
Graphics:
  Device-1: NVIDIA GP108 [GeForce GT 1030] vendor: Gigabyte driver: nvidia
    v: 520.56.06 alternate: nouveau,nvidia_drm non-free: 515.xx+ status: current
    (as of 2022-10) arch: Pascal code: GP10x process: TSMC 16nm built: 2016-21
    pcie: gen: 3 speed: 8 GT/s lanes: 4 ports: active: none off: HDMI-A-1
    empty: DVI-D-1 bus-ID: 01:00.0 chip-ID: 10de:1d01 class-ID: 0300
  Display: x11 server: X.org v: 1.21.1.4 compositor: Picom v: git-7e568
    driver: X: loaded: nvidia gpu: nvidia,nvidia-nvswitch display-ID: :0
    screens: 1
  Screen-1: 0 s-res: 3840x2160 s-size: <missing: xdpyinfo>
  Monitor-1: HDMI-A-1 mapped: HDMI-0 note: disabled model: Samsung LS27A70
    serial: <filter> built: 2021 res: 3840x2160 hz: 60 dpi: 163 gamma: 1.2
    size: 600x340mm (23.62x13.39") diag: 685mm (27") ratio: 16:9 modes:
    max: 3840x2160 min: 640x480
  OpenGL: renderer: NVIDIA GeForce GT 1030/PCIe/SSE2 v: 4.6.0 NVIDIA
    520.56.06 direct render: Yes
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Acer Incorporated ALI
    driver: snd_hda_intel v: kernel alternate: snd_soc_skl,snd_sof_pci_intel_cnl
    bus-ID: 00:1f.3 chip-ID: 8086:a348 class-ID: 0403
  Device-2: NVIDIA GP108 High Definition Audio vendor: Gigabyte
    driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 4
    bus-ID: 01:00.1 chip-ID: 10de:0fb8 class-ID: 0403
  Sound API: ALSA v: k6.0.2-arch1-1 running: yes
  Sound Server-1: PulseAudio v: 16.1 running: no
  Sound Server-2: PipeWire v: 0.3.59 running: yes
Network:
  Device-1: Intel Cannon Lake PCH CNVi WiFi driver: iwlwifi v: kernel
    bus-ID: 00:14.3 chip-ID: 8086:a370 class-ID: 0280
  IF: wlan0 state: up mac: <filter>
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Acer Incorporated ALI driver: r8169 v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 port: 3000 bus-ID: 03:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: enp3s0 state: down mac: <filter>
  IF-ID-1: wg-mullvad state: unknown speed: N/A duplex: N/A mac: N/A
Bluetooth:
  Device-1: Intel Bluetooth 9460/9560 Jefferson Peak (JfP) type: USB
    driver: btusb v: 0.8 bus-ID: 1-14:5 chip-ID: 8087:0aaa class-ID: e001
  Report: bt-adapter ID: hci0 rfk-id: 1 state: up address: <filter>
Drives:
  Local Storage: total: 763.85 GiB used: 97.12 GiB (12.7%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 970 EVO Plus
    500GB size: 465.76 GiB block-size: physical: 512 B logical: 512 B
    speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter> rev: 2B2QEXM7
    temp: 31.9 C scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 type: USB vendor: Toshiba model: MK3265GSX H
    size: 298.09 GiB block-size: physical: 512 B logical: 512 B type: HDD
    rpm: 5400 serial: <filter> scheme: MBR
Partition:
  ID-1: / raw-size: 364.97 GiB size: 358.18 GiB (98.14%) used: 7.52 GiB (2.1%)
    fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%) used: 6.1 MiB
    (2.0%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
Swap:
  Alert: No swap data was found.
Sensors:
  System Temperatures: cpu: 40.0 C pch: 51.0 C mobo: N/A gpu: nvidia
    temp: 37 C
  Fan Speeds (RPM): N/A gpu: nvidia fan: 0%
Info:
  Processes: 235 Uptime: 1h 23m wakeups: 4 Memory: 15.55 GiB used: 4.35 GiB
  (28.0%) Init: systemd v: 251 default: graphical tool: systemctl Compilers:
  gcc: 12.2.0 Packages: pm: pacman pkgs: 783 libs: 198 tools: yay Shell: Zsh
  v: 5.9 running-in: alacritty inxi: 3.3.22

Just an idea: do you have the possibility to try the whole thing with Display port?

Naah the crappy GT-1030 only supports hdmi and dvi.

I also had this shitty thing at some point …

Only other option in this Acer small form factor 220W proprietary power supply is the rx-6400 and I sure as hell won’t fork over ~200 euros for that.

You’re right, that’s a bad limitation. I was lucky to be able to buy my RX 580 years ago for the price of €185.00. Now that is an absurdity. And the power supply in my computer doesn’t offer any limitation there either. You have my empathy!

I have the same exact issue with Samsung J34J79x 34" 4K wide screen.
Using 2to1 generic 4K, switch. Switching the monitor to connect to the work provided Win 11 Laptop is flawless. Switching the monitor back to EOS would recover the screen, it would stay black, and the only solution is logout to the SDDM and log again.
I am running latest mesa-git, AMD closed driver, on Plasma/Wayland.
I ordered an 8K HDMI 2-1 switch, however, my feeling it would not solve the issue.

inxi -Faazy

System:
Kernel: 6.4.10-zen2-1-zen arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
parameters: initrd=\53f183a037124ee6af8da61807221455\6.4.10-zen2-1-zen\initrd
nvme_load=YES nowatchdog rw root=UUID=04d8dadb-6db3-4779-a38d-e3440bc8ecbe
systemd.machine_id=53f183a037124ee6af8da61807221455
Desktop: KDE Plasma v: 5.27.7 tk: Qt v: 5.15.10 wm: kwin_wayland vt: 3
dm: N/A Distro: EndeavourOS base: Arch Linux
Machine:
Type: Desktop Mobo: ASUSTeK model: P8Z77-V LX v: Rev X.0x
serial: UEFI: American Megatrends v: 2501
date: 07/21/2014
CPU:
Info: model: Intel Core i7-2600K bits: 64 type: MT MCP arch: Sandy Bridge
gen: core 2 level: v2 built: 2010-12 process: Intel 32nm family: 6
model-id: 0x2A (42) stepping: 7 microcode: 0x2F
Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
L3: 8 MiB desc: 1x8 MiB
Speed (MHz): avg: 1834 high: 3089 min/max: 1600/6300 scaling:
driver: intel_cpufreq governor: schedutil cores: 1: 1616 2: 1616 3: 1600
4: 1616 5: 1615 6: 1600 7: 1926 8: 3089 bogomips: 54937
Flags: avx ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3
Vulnerabilities:
Type: gather_data_sampling status: Not affected
Type: itlb_multihit status: KVM: VMX unsupported
Type: l1tf mitigation: PTE Inversion
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
Type: mmio_stale_data status: Unknown: No mitigations
Type: retbleed status: Not affected
Type: spec_rstack_overflow status: Not affected
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
prctl
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
sanitization
Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
STIBP: conditional, RSB filling, PBRSB-eIBRS: Not affected
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: AMD Pitcairn XT [Radeon HD 7870 GHz Edition] vendor: Gigabyte
driver: amdgpu v: kernel alternate: radeon arch: GCN-1 code: Southern Islands
process: TSMC 28nm built: 2011-20 pcie: gen: 2 speed: 5 GT/s lanes: 16
link-max: gen: 3 speed: 8 GT/s ports: active: DVI-I-1,HDMI-A-1
empty: DP-1,DP-2 bus-ID: 01:00.0 chip-ID: 1002:6818 class-ID: 0300
temp: 36.0 C
Device-2: AMD Pitcairn XT [Radeon HD 7870 GHz Edition] vendor: Gigabyte
driver: amdgpu v: kernel alternate: radeon arch: GCN-1 code: Southern Islands
process: TSMC 28nm built: 2011-20 pcie: gen: 2 speed: 5 GT/s lanes: 4
link-max: gen: 3 speed: 8 GT/s lanes: 16 ports: active: none empty: DP-3,
DP-4, DVI-I-2, HDMI-A-2 bus-ID: 02:00.0 chip-ID: 1002:6818 class-ID: 0300
temp: 26.0 C
Device-3: Logitech HD Pro Webcam C920 driver: snd-usb-audio,uvcvideo
type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-1.5.2:9
chip-ID: 046d:082d class-ID: 0102 serial:
Display: wayland server: X.org v: 1.21.1.8 with: Xwayland v: 23.1.2
compositor: kwin_wayland driver: X: loaded: amdgpu unloaded: modesetting
alternate: fbdev,vesa dri: radeonsi gpu: amdgpu,amdgpu d-rect: 4640x3360
display-ID: 0
Monitor-1: DVI-I-1 pos: top-right res: 1200x1920 size: N/A modes: N/A
Monitor-2: HDMI-A-1 pos: bottom-l res: 3440x1440 size: N/A modes: N/A
API: OpenGL v: 4.6 Mesa 23.3.0-devel (git-198719de39) renderer: AMD Radeon
HD 7800 Series (pitcairn LLVM 15.0.7 DRM 3.52 6.4.10-zen2-1-zen)
direct-render: Yes
Audio:
Device-1: Intel 7 Series/C216 Family High Definition Audio
vendor: ASUSTeK P8Z77-V LX driver: snd_hda_intel v: kernel bus-ID: 00:1b.0
chip-ID: 8086:1e20 class-ID: 0403
Device-2: AMD Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000
Series] vendor: Gigabyte driver: snd_hda_intel v: kernel pcie: gen: 2
speed: 5 GT/s lanes: 16 link-max: gen: 3 speed: 8 GT/s bus-ID: 01:00.1
chip-ID: 1002:aab0 class-ID: 0403
Device-3: AMD Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000
Series] vendor: Gigabyte driver: snd_hda_intel v: kernel pcie: gen: 2
speed: 5 GT/s lanes: 4 link-max: gen: 3 speed: 8 GT/s lanes: 16
bus-ID: 02:00.1 chip-ID: 1002:aab0 class-ID: 0403
Device-4: Logitech HD Pro Webcam C920 driver: snd-usb-audio,uvcvideo
type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-1.5.2:9
chip-ID: 046d:082d class-ID: 0102 serial:
API: ALSA v: k6.4.10-zen2-1-zen status: kernel-api
tools: alsactl,alsamixer,amixer
Server-1: sndiod v: N/A status: off tools: aucat,midicat,sndioctl
Server-2: PipeWire v: 0.3.77 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: ASUSTeK P8 series driver: r8169 v: kernel pcie: gen: 1
speed: 2.5 GT/s lanes: 1 port: c000 bus-ID: 03:00.0 chip-ID: 10ec:8168
class-ID: 0200
IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac:
Drives:
Local Storage: total: 2.16 TiB used: 450.74 GiB (20.4%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: Western Digital
model: WD1002FAEX-00Z3A0 size: 931.51 GiB block-size: physical: 512 B
logical: 512 B speed: 6.0 Gb/s tech: N/A serial: fw-rev: 1D05
scheme: MBR
ID-2: /dev/sdb maj-min: 8:16 vendor: Western Digital
model: WDS100T2B0A-00SM50 size: 931.51 GiB block-size: physical: 512 B
logical: 512 B speed: 6.0 Gb/s tech: SSD serial: fw-rev: 40WD
scheme: MBR
ID-3: /dev/sdc maj-min: 8:32 vendor: OCZ model: VERTEX3 MI size: 111.79 GiB
block-size: physical: 512 B logical: 512 B speed: 3.0 Gb/s tech: SSD
serial: fw-rev: 2.25 scheme: MBR
ID-4: /dev/sdd maj-min: 8:48 vendor: Samsung model: Flash Drive
size: 239.02 GiB block-size: physical: 512 B logical: 512 B type: USB
rev: 3.1 spd: 5 Gb/s lanes: 1 mode: 3.2 gen-1x1 tech: SSD serial:
fw-rev: 1100 scheme: GPT
SMART Message: Unknown USB bridge. Flash drive/Unsupported enclosure?
Partition:
ID-1: / raw-size: 238.03 GiB size: 233.24 GiB (97.99%)
used: 27.72 GiB (11.9%) fs: ext4 dev: /dev/sdd2 maj-min: 8:50
Swap:
Alert: No swap data was found.
Sensors:
System Temperatures: cpu: 32.0 C mobo: N/A
Fan Speeds (RPM): N/A
GPU: device: amdgpu temp: 36.0 C device: amdgpu temp: 27.0 C
Info:
Processes: 283 Uptime: 1h 12m wakeups: 0 Memory: total: 16 GiB
available: 15.56 GiB used: 4.81 GiB (30.9%) Init: systemd v: 254
default: graphical tool: systemctl Compilers: gcc: 13.2.1 clang: 15.0.7
Packages: pm: pacman pkgs: 1806 libs: 441 tools: octopi,yay pm: flatpak
pkgs: 0 Shell: Zsh v: 5.9 running-in: konsole inxi: 3.3.28

Were you able to solve it?

I have the same problem, it happens like 3 out of 5 times when waking from suspend. What works for me is switching to another TTY and then back again.

[quote="Beiruty, post:7, topic:33017"]
Graphics:
Device-1: AMD Pitcairn XT [Radeon HD 7870 GHz Edition] vendor: Gigabyte
driver: amdgpu v: kernel alternate: radeon arch: GCN-1 code: Southern Islands
process: TSMC 28nm built: 2011-20 pcie: gen: 2 speed: 5 GT/s lanes: 16
link-max: gen: 3 speed: 8 GT/s ports: active: DVI-I-1,HDMI-A-1
empty: DP-1,DP-2 bus-ID: 01:00.0 chip-ID: 1002:6818 class-ID: 0300
temp: 36.0 C
Device-2: AMD Pitcairn XT [Radeon HD 7870 GHz Edition] vendor: Gigabyte
driver: amdgpu v: kernel alternate: radeon arch: GCN-1 code: Southern Islands
process: TSMC 28nm built: 2011-20 pcie: gen: 2 speed: 5 GT/s lanes: 4
link-max: gen: 3 speed: 8 GT/s lanes: 16 ports: active: none empty: DP-3,
DP-4, DVI-I-2, HDMI-A-2 bus-ID: 02:00.0 chip-ID: 1002:6818 class-ID: 0300
temp: 26.0 C
[/quote]

I see you have older AMD HD Gpu’s. First of all because these are Southern Islands do you have them setup according to the arch wiki here.

https://wiki.archlinux.org/title/AMDGPU#Set_module_parameters_in_kernel_command_line

On my system which i don’t have installed with hibernation. I have swap file. I can suspend and i have a single RX 590 Gpu. I am on Wayland also on Kde. I can put it in sleep mode and start it back up. Sometimes it comes back right away. I think if i have it set to suspend after a certain time then it will start back up sometimes taking a while to bring the desktop back up. I’ll have to try it again to see as i don’t typically use suspend mode. I do have everything set up though on the amdgpu such as hardware acceleration etc. I think it may happen sometimes as @BendTheKnee say’s and if i hit alt key or crt + alt key (can’t remember exactly) it comes back.

Edit: I’ll try suspend set for 1 min ( It’s actually sleep mode) Doesn’t say suspend.
Edit2: Yes it takes a while before the screen comes back.

It seems to take a while to come back because it has to bring up my mouse and the network connection. When that happens the screen comes back. I can see it in the background beforehand but it’s dark so it must not be powered yet.

Edit: It seems to take about 30 seconds
Edit: Also my Gpu is hooked via HDMI also.

I appreciate your response.

Here is my setup that works somehow with the Samsung J34 monitor
Firstly, the J34 has 2 Thunderbolt 3 inputs that you can select one of them only. So, best is to plug one and only one USB-c Thunderbolt 3 cable in one of those 2 ports

Outputs:
Monitor 1: J34, the monitor has 1 HDMI and 1 DPS ports that the J34 built-in switch can select from.
Thus, the J34 can select one of TB3, HDMI, DP

Monitor 2: Dell Ultrasharp 24" in Portrait mode. Inputs: DVI and HDMI connected only to my PC WS running EOS. It is the secondary monitor connected to the integrated video card on the motherboard. If the DVI is connected to the primary Radeon HD 7870 GHz Edition, the primary Radeon HD 7870 GHz Edition cannot drive both monitors at max resolution and refresh rate.

BTW, I have a second identical Radeon HD 7870 GHz Edition connected in a Crossfire mode, but It may never be used in EOS.

Sources
2 Windows 11 Laptops (business provided) and 1 12-years only PC running EOS

Laptop A, Win11 with Thunderbolt 3 and HDMI for co-video processor Nvidia, Laptop A, Win11 with Thunderbolt 3 and HDMI for co-video processor Nvidia Docking station > HDMI output
Laptop B, Win11 with Thunderbolt 3 and HDMI for co-video processor Nvidia > HDMI or TB3/4 output

PC has 3 video cards
Radeon HD 7870 GHz Edition
Radeon HD 7870 GHz Edition
Integrated video card

Solution: 5 video sources, 2 monitors with 5 possible video sinks. 1 TB3 sink is unusable by the built-in switch of J34

  • No external switches of any kind. I tried at least 3.
  • Laptop A, HP, selected out is the TB3 > HP Docking Station > TB3 input of the J34
  • Laptop B, DELL, selected out is the HDMI > HDMI input of the J34
  • PC, Radeon HD 7870 GHz Edition’s DP 1.2 output connected to the Dell UltraSharp24 input
  • PC, Integrated video card VDI output connected to the Dell UltraSharp24 DVI input

Net result, the J34 can select one of the 2 laptops, or the PC/EOS
I will post a photo of my work bench

This is a lot to wrap my head around. :laughing:

It took me the best of the last 2-weeks to get it right. 5x5 combinations plus 1-monkey wrench thrown into the gears just to make my life interesting, 3 unhelpful switches, 4 protocols, DVI-DP-TB-USB-c, many cables to try. It was a bit challenging for an old gray-haired man to solve it.

So you have 2 monitors hooked up to the desktop that has the dual amd gpu? Then you have the laptops hooked up to both monitors also or just one on each?

Edit: Yes type of cables and specifications of cables do make a difference and not everything always works the way we think or want it to due to hardware limitations. Not all switches or cables are equal also.

The 2 laptops are only hooked to the Samsung J34.
So when I select Laptop 1, I got its built-in screen plusJ34 in extended mode
So when I select Laptop 2, I got its built-in screen plusJ34 in extended mode
So when I select my PC (2 AMD GPU) and one integrated DVI, I got it Dell UltraSharp 24" plusJ34 34" in extended mode

BTW, I am still running my EOS from a 256GB Samsung flash thumb drive

:stuck_out_tongue_winking_eye: :crazy_face: :stuck_out_tongue_closed_eyes:

That Samsung 1/4 Terabyte stick died. It was replaced by 1TB Samsung Evo 970 SSD
While doing the rebuild of my 12 yrs old PC, I removed 1 AMD 7870 and the extra power supply box.
5 SATA devices are attached and a new DP cable that can handle 4K at 100hz has been ordered

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