Fedora 38 dual monitor issues

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1

I updated my system to fedora 38 and when I tried to connect to a dual monitor workplace, the second monitor no longer works.

During booting, both monitors show the Lenovo logo, but after that only one screen works and the other one claims it does not detect any signal from the laptop.

In the system setting dialogue, both monitors are shown, but when I try to enable the second monitor and click apply, it does not change anything and the slider goes back to disabled.

Partial output from inxi -Fzxx:

System:
  Kernel: 6.4.12-200.fc38.x86_64 arch: x86_64 bits: 64 compiler: gcc
    v: 2.39-9.fc38 Desktop: GNOME v: 44.4 tk: GTK v: 3.24.38 wm: gnome-shell
    dm: GDM Distro: Fedora release 38 (Thirty Eight)
Machine:
  Type: Laptop System: LENOVO  v: ThinkPad T480
Graphics:
  Device-1: Intel UHD Graphics 620 vendor: Lenovo ThinkPad T480 driver: i915
    v: kernel arch: Gen-9.5 ports: active: DP-4 off: DP-5,eDP-1 empty: DP-1,
    DP-2, DP-3, HDMI-A-1, HDMI-A-2 bus-ID: 00:02.0 chip-ID: 8086:5917
  Device-2: NVIDIA GP108M [GeForce MX150] vendor: Lenovo ThinkPad T480
    driver: nouveau v: kernel arch: Maxwell pcie: speed: 2.5 GT/s lanes: 4
    bus-ID: 01:00.0 chip-ID: 10de:1d10 temp: 43.0 C
  Display: x11 server: X.Org v: 1.20.14 with: Xwayland v: 22.1.9
    compositor: gnome-shell driver: X: loaded: modesetting unloaded: fbdev,vesa
    dri: iris gpu: i915 display-ID: :1 screens: 1
  Screen-1: 0 s-res: 4480x1440 s-dpi: 96
  Monitor-1: not-matched mapped: DP-2-2 pos: primary res: 2560x1440 dpi: 109
    diag: 685mm (26.97")
  Monitor-2: not-matched mapped: DP-2-3 size-res: N/A
  Monitor-3: eDP-1 note: disabled model: AU Optronics 0x2336 res: N/A
    dpi: 210 diag: 355mm (14")
  API: OpenGL v: 4.6 Mesa 23.1.6 renderer: Mesa Intel UHD Graphics 620 (KBL
    GT2) direct-render: Yes

Installed packages:

$dnf list installed | grep 'nouveau'
xorg-x11-drv-nouveau.x86_64                       1:1.0.17-5.fc38                        @fedora                
$ dnf list installed | grep 'nvidia'
nvidia-gpu-firmware.noarch                        20230804-153.fc38                      @updates
2

You do not seem to have an actual question and minimal details so I am not sure how to respond.
What is the real question?
Are you using a docking station or is the second monitor connected directly to the laptop/pc?
How is the second monitor connected? (DP, HDMI, TB, USB-C, etc)
Is this a laptop or pc? (it might be a laptop since it has 2 gpus, but you cut out enough info from inxi to make that a guess and not certain)

The inxi output in full would have been much more beneficial.

Providing more information than you might feed beneficial is better than forcing us to ask for details.

Searching here for similar problems might provide guidance.

3

Hi Jeff,

Yes, the monitors are conencted via a docking station, which is connected via the USB-C / Power port of my laptop.

In the meantime it turned out that this seems like a problem with the particular setup of monitors (these are two different monitor models), using a different table with two identical monitors connected to a similar docking station works without problems.

So from my side, I can consider the issue as resolved.

Thanks for the link to the Lenovo issue and the hint with the docking station.