I have been using 3 Dell screens under MX Linux on my Dell Optiplex 7010 for years. With immense regrets I had to switch to Windows where I cannot get 3 screens to work - with the exact same configuration.
It is either 1+2, 2+3 or 1+3, not the 3 together. I have tried all kinds of procedures from various sites, including Dell and Intel. All drivers are up to date, I cannot see in the BIOS something that would prevent using 3 screens. Also, no changes in the config, and it worked like a charm under Linux.
Maybe one of you has had this problem and can hint in one direction...?
This was the config under Linux:
CODE: SELECT ALL
Snapshot created on:
System: Host: <filter> Kernel: 5.8.16-antix.1-amd64-smp x86_64 bits: 64 compiler: N/A
parameters: BOOT_IMAGE=/boot/vmlinuz-5.8.16-antix.1-amd64-smp
root=UUID=<filter> ro quiet splash
init=/lib/systemd/systemd
Desktop: Xfce 4.14.3 tk: Gtk 3.24.5 info: xfce4-panel wm: xfwm4 dm: LightDM 1.26.0
Distro: MX-19.4_x64 patito feo October 21 2019 base: Debian GNU/Linux 10 (buster)
Machine: Type: Desktop System: Dell product: OptiPlex 7010 v: 01 serial: <filter> Chassis:
type: 3 serial: <filter>
Mobo: Dell model: 0773VG v: A00 serial: <filter> BIOS: Dell v: A05 date: 07/31/2012
Battery: Device-1: hidpp_battery_0 model: Logitech Wireless Keyboard K230 serial: <filter>
charge: 100% (should be ignored) rechargeable: yes status: Discharging
CPU: Topology: Quad Core model: Intel Core i5-3470 bits: 64 type: MCP arch: Ivy Bridge
family: 6 model-id: 3A (58) stepping: 9 microcode: 21 L2 cache: 6144 KiB
flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 25543
Speed: 3498 MHz min/max: 1600/3600 MHz Core speeds (MHz): 1: 2789 2: 2533 3: 3295
4: 2140
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled
Type: mds mitigation: Clear CPU buffers; SMT disabled
Type: meltdown mitigation: PTI
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 generic retpoline, IBPB: conditional, IBRS_FW,
STIBP: disabled, RSB filling
Type: srbds status: Vulnerable: No microcode
Type: tsx_async_abort status: Not affected
Graphics: Device-1: Intel Xeon E3-1200 v2/3rd Gen Core processor Graphics vendor: Dell
driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:0152
Display: x11 server: X.Org 1.20.8 driver: modesetting unloaded: fbdev,vesa
resolution: 1920x1080~60Hz, 1680x1050~60Hz, 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel Ivybridge Desktop v: 4.2 Mesa 18.3.6 compat-v: 3.0
direct render: Yes
Audio: Device-1: Intel 7 Series/C216 Family High Definition Audio vendor: Dell
driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:1e20
Sound Server: ALSA v: k5.8.16-antix.1-amd64-smp
Network: Device-1: Intel 82579LM Gigabit Network vendor: Dell driver: e1000e v: 3.2.6-k
port: f080 bus ID: 00:19.0 chip ID: 8086:1502
IF: eth0 state: up speed: 100 Mbps duplex: full mac: <filter>
IF-ID-1: tun0 state: unknown speed: 10 Mbps duplex: full mac: N/A
Drives: Local Storage: total: 1.14 TiB used: 189.80 GiB (16.3%)
ID-1: /dev/sda vendor: Hitachi model: HDP725025GLA380 size: 232.89 GiB block size:
physical: 512 B logical: 512 B speed: 3.0 Gb/s serial: <filter> rev: A5KA temp: 33 C
scheme: MBR
ID-2: /dev/sdb vendor: Western Digital model: WD1002FBYS-02A6B0 size: 931.51 GiB
block size: physical: 512 B logical: 512 B speed: 3.0 Gb/s rotation: 7200 rpm
serial: <filter> rev: 0C06 temp: 46 C scheme: MBR
Partition: ID-1: / raw size: 230.35 GiB size: 225.74 GiB (98.00%) used: 40.19 GiB (17.8%)
fs: ext4 dev: /dev/sda2
Sensors: System Temperatures: cpu: 31.0 C mobo: N/A
Fan Speeds (RPM): N/A
Repos: No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/debian-stable-updates.list
1: deb http://deb.debian.org/debian buster-updates main contrib non-free
Active apt repos in: /etc/apt/sources.list.d/debian.list
1: deb http://deb.debian.org/debian buster main contrib non-free
2: deb http://deb.debian.org/debian-security buster/updates main contrib non-free
Active apt repos in: /etc/apt/sources.list.d/google-chrome.list
1: deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
Active apt repos in: /etc/apt/sources.list.d/google-earth-pro.list
1: deb [arch=amd64] http://dl.google.com/linux/earth/deb/ stable main
Active apt repos in: /etc/apt/sources.list.d/mx.list
1: deb https://mirror.one.com/mx-packages/mx/repo/ buster main non-free
Active apt repos in: /etc/apt/sources.list.d/signal-xenial-added-by-mxpi.list
1: deb [arch=amd64] https://updates.signal.org/desktop/apt xenial main
Active apt repos in: /etc/apt/sources.list.d/slack.list
1: deb https://packagecloud.io/slacktechnologies/slack/debian/ jessie main
Active apt repos in: /etc/apt/sources.list.d/teamviewer.list
1: deb http://linux.teamviewer.com/deb stable main
No active apt repos in: /etc/apt/sources.list.d/various.list
Info: Processes: 261 Uptime: 1d 18h 28m Memory: 5.69 GiB used: 3.00 GiB (52.7%)
Init: systemd v: 241 runlevel: 5 default: 5 Compilers: gcc: 8.3.0 alt: 8
Shell: quick-system-in running in: quick-system-in inxi: 3.0.36
Moderator: added 'in Windows' in the topic title, to make it clear that this deals with that
