Martin /Nightowl/ Byttebier composed on 2022-08-14 22:14 (UTC+0200):
Suse-prime is installed but I see no reason why I should use it. The monitor is directly hooked to a displayport of the NVIDIA graphic card.
The dell XPS 8940 desktop has 3x DisplayPort 1.4a, 1x HDMI 2.1 ports on the NVIDA card
Until this, I wasn't aware this was a desktop rather than a laptop. Thus you shouldn't need anything that has to do with Intel graphics, nor should you need prime. You may need a BIOS setting change. BIOS often have bugs. Make sure the PCIe card is preferred over the IGP in the BIOS. More than once in bug reports I have seen a recommendation to NVidia users of NVidia drivers to remove Plymouth. Maybe this is another of those combinations of young components whose support isn't complete or thoroughly debugged, where their /removal/ would be an answer to the problem. Without seeing Xorg.0.log, I'm hard to convince that disabling Plymouth via Grub took effect. Since I never have Plymouth installed, I can't tell whether plymouth=0 or plymouth.enable=0 or plymouth.disable=1 or noplymouth or all of, or some combination of the above, are effective to disable Plymouth via Grub in all contexts. I've never seen a doc on the subject. I only know that linuxrc, for installation, specifies plymouth=0. Without Xorg.0.log, I don't know that an effective one was employed, or had the necessary whitespace preceding it, or had no typo.
The Dell has also 1 DisplayPort 1.2 and 1 HDMI 1.4. I suppose these are for the Intel graphic card.
They are. I have an Asus motherboard same generation as your Dell's, with two HDMI outputs and a DisplayPort: # inxi -CSM System: Host: ab560 Kernel: 5.18.15-1-default arch: x86_64 bits: 64 Desktop: Trinity v: R14.0.12 Distro: openSUSE Tumbleweed 20220813 Machine: Type: Desktop System: ASUS product: N/A v: N/A serial: N/A Mobo: ASUSTeK model: PRIME B560M-A v: Rev 1.xx serial: 210787670000384 UEFI: American Megatrends v: 1601 date: 05/07/2022 CPU: Info: 6-core model: 11th Gen Intel Core i5-11400 bits: 64 type: MT MCP cache: L2: 3 MiB Speed (MHz): avg: 800 min/max: 800/4400 cores: 1: 801 2: 801 3: 801 4: 801 5: 801 6: 801 7: 800 8: 800 9: 801 10: 800 11: 801 12: 800 # inxi -Gaz --vs inxi 3.3.20-00 (2022-07-27) Graphics: Device-1: Intel RocketLake-S GT1 [UHD Graphics 730] vendor: ASUSTeK driver: i915 v: kernel arch: Gen-12.1 process: Intel 10nm built: 2020-21 ports: active: DP-1,HDMI-A-1,HDMI-A-2 empty: HDMI-A-3 bus-ID: 00:02.0 chip-ID: 8086:4c8b class-ID: 0300 Display: x11 server: X.Org v: 21.1.4 driver: X: loaded: modesetting unloaded: fbdev,vesa alternate: intel gpu: i915 display-ID: :0 screens: 1 Screen-1: 0 s-res: 2560x3690 s-dpi: 120 s-size: 540x779mm (21.26x30.67") s-diag: 948mm (37.32") Monitor-1: DP-1 pos: primary,bottom model: Acer K272HUL serial: <filter> built: 2018 res: 2560x1440 hz: 60 dpi: 109 gamma: 1.2 size: 598x336mm (23.54x13.23") diag: 686mm (27") ratio: 16:9 modes: max: 2560x1440 min: 720x400 Monitor-2: HDMI-A-1 mapped: HDMI-1 pos: primary,top model: NEC EA243WM serial: <filter> built: 2011 res: 1920x1200 hz: 60 dpi: 94 gamma: 1.2 size: 519x324mm (20.43x12.76") diag: 612mm (24.1") ratio: 16:10 modes: max: 1920x1200 min: 640x480 Monitor-3: HDMI-A-2 mapped: HDMI-2 pos: middle model: Dell P2213 serial: <filter> built: 2013 res: 1680x1050 hz: 60 dpi: 90 gamma: 1.2 size: 473x296mm (18.62x11.65") diag: 558mm (22") ratio: 16:10 modes: max: 1680x1050 min: 720x400 OpenGL: renderer: Mesa Intel Graphics (RKL GT1) v: 4.6 Mesa 22.1.4 direct render: Yes # I would be hard pressed to use more than three displays at once. The IGP provides all the graphics performance I can use. -- Evolution as taught in public schools is, like religion, based on faith, not based on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata