Van Snyder composed on 2025-01-26 19:56 (UTC-0800):
I just bought a new MSI Z790 motherboard with an Intel i9 and 32 GB of memory.
It has one HDMI built in and one antique NVidia for which Debian
drivers are no longer available.
"inxi -G" says
12Device-1 Intel Raptor Lake-S GT1 [UHD Graphics 770] 12driver i915 12v kernel
12Device-2 NVIDIA GF108 [GeForce GT 630] 12driver nouveau 12v kernel 12Display 12server X.Org 12v 1.21.1.7 12with Xwayland 12v 22.1.9
12driver 12X 12loaded modesetting
12unloaded fbdev,vesa 12dri swrast 12gpu i915,nouveau 12resolution 121 1920x1200~60Hz 122 1920x1200~60Hz
12API OpenGL 12v 4.5 Mesa 22.3.6 12renderer llvmpipe (LLVM 15.0.6 256
bits)
I have two displays on the NVidia GF108, an Envision L22W898 (and old
TV) 1600x900, and an old HP vs17 (1280x1024).
When I booted with only these two displays connected, everything works correctly.
If I boot with the HDMI device powered up, the GDM3 login screen
doesn't appear on the primary display. Rather it's kind of a dull big-
pixel dirty pool-table green without my user name or a box for the
password. Maybe it's displayed at 10000x10000 on a 1600x900 screen.
If I type in my password blind, KDE starts up OK.
After having started once with the HDMI plugged in, the GDM3 screen
doesn't return to normal even with the HDMI device unplugged or powered
off but plugged in.
Is there a GDM3 setting that can repair this?
The KDE System Settings => Display and Monitor => Display Configuration configures the HDMI device correctly if it's connected and powered on
when I boot. If I power it on after booting, it doesn't come. And
there's no "scan for more devices" button in the system settings
widget. Is there a way to turn it on after I boot, maybe in a Gnome
widget?
My NVIDIA GF108 [GeForce GT 630] works fine with two displays too. As it's not in
a motherboard with Intel Graphics too, I can only surmise you may need edit the UEFI firmware WRT GPU priority and/or other GPU parameters. It used to be uncommon
to be able to use both onboard GPU and discrete GPU at the same time. It could be
that's what you are up against here even with so new a motherboard and BIOS.
KDE Plasma installations are usually coupled with SDDM, sometimes LightDM if there
is a problem for Plasma to play nice with the hardware. If you really are using GDM, you might consider a DM switch at least long enough to determine whether the
current DM may or may not be relevant to your issue.
Sometimes lighting up an errant display can take as little as a quick switch from
DE to vtty and back.
Is a motherboard BIOS update available?
# pinxi -GSaz --vs --za --hostname
pinxi 3.3.36-00 (2024-09-04)
System:
Host: gb970 Kernel: 6.11.10-amd64 arch: x86_64 bits: 64 compiler: gcc
v: 14.2.0 clocksource: tsc avail: hpet,acpi_pm
parameters: root=LABEL=<filter> ipv6.disable=1 net.ifnames=0
plymouth.enable=0 noresume consoleblank=0 mitigations=off
Desktop: TDE (Trinity) v: R14.1.4~[DEVELOPMENT] tk: Qt v: 3.5.0 wm: Twin
v: 3.0 with: kicker vt: 7 dm: 1: TDM 2: XDM Distro: Debian GNU/Linux
trixie/sid
Graphics:
Device-1: NVIDIA GF108 [GeForce GT 630] vendor: Gigabyte driver: nouveau
v: kernel non-free: series: 390.xx+ status: legacy (EOL~2022-11-22) last:
release: 390.157 kernel: 6.0 xorg: 1.21 arch: Fermi code: GF1xx
process: 40/28nm built: 2010-2016 pcie: gen: 1 speed: 2.5 GT/s lanes: 16
ports: active: DVI-I-1,HDMI-A-1 empty: VGA-1 bus-ID: 01:00.0
chip-ID: 10de:0f00 class-ID: 0300 temp: 47.0 C
Display: x11 server: X.Org v: 21.1.14 compositor: Twin v: 3.0 driver: X:
loaded: modesetting unloaded: fbdev,vesa dri: nouveau gpu: nouveau
display-ID: :0 screens: 1
Screen-1: 0 s-res: 3600x1200 s-dpi: 120 s-size: 762x254mm (30.00x10.00")
s-diag: 803mm (31.62")
Monitor-1: DVI-I-1 pos: right model: Dell P2213 serial: <filter>
built: 2013 res: mode: 1680x1050 hz: 60 scale: 100% (1) dpi: 90 gamma: 1.2
size: 473x296mm (18.62x11.65") diag: 558mm (22") ratio: 16:10 modes:
max: 1680x1050 min: 720x400
Monitor-2: HDMI-A-1 mapped: HDMI-1 pos: primary,left model: NEC EA243WM
serial: <filter> built: 2011 res: mode: 1920x1200 hz: 60 scale: 100% (1)
dpi: 94 gamma: 1.2 size: 519x324mm (20.43x12.76") diag: 612mm (24.1")
ratio: 16:10 modes: max: 1920x1200 min: 640x480
API: EGL v: 1.5 hw: drv: nvidia nouveau platforms: device: 0 drv: nouveau
device: 1 drv: swrast gbm: drv: nouveau surfaceless: drv: nouveau x11:
drv: nouveau inactive: wayland
API: OpenGL v: 4.5 compat-v: 4.3 vendor: mesa v: 24.2.8-1 glx-v: 1.4
direct-render: yes renderer: NVC1 device-ID: 10de:0f00 memory: 982.4 MiB
unified: no
API: Vulkan v: 1.3.296 layers: 4 device: 0 type: cpu name: llvmpipe (LLVM
19.1.4 128 bits) driver: N/A device-ID: 10005:0000 surfaces: xcb,xlib
Info: Tools: api: eglinfo, glxinfo, vulkaninfo x11: xdriinfo, xdpyinfo,
xprop, xrandr
#
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