Dear all,
here’s a strange observation and two questions: I have a computer with an “AMD GPU” (contained in the Ryzen chip) plus an Nvidia A600. The computer is connected to an Eizo CG277 screen via an Oehlbach switch.
Everything was fine until I installed the Nvidia drivers to actually make use of the graphics card.
Now, I can only display anything when the CG277 is directly connected (via a DVI->HDMI adapter) to the graphics card upon startup of the computer and remains connected. As soon as the connection to the screen is cut once, the screen will remain blank until the computer is restarted. The same happens if the computer is connected to the screen via the switch upon startup. It is not possible to use the switch any longer. How can this be corrected? Also, the computer can’t be connected to another screen via USB-C any longer.
Actually, I would like to make the AMD GPU my standard graphics card again, and use the Nvidia only for selected programs like darktable or LLM inference. Is that possible at all?
mhwd
> 0000:01:00.0 (0300:10de:2230) Display controller nVidia Corporation:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-linux 2024.05.06 true PCI
video-modesetting 2020.01.13 true PCI
video-vesa 2017.03.12 true PCI
> 0000:75:00.0 (0300:1002:13c0) Display controller ATI Technologies Inc:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-linux 2024.05.06 true PCI
video-modesetting 2020.01.13 true PCI
video-vesa 2017.03.12 true PCI
mhwd --listinstalled
> Installed PCI configs:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-nvidia 2024.05.03 false PCI
video-linux 2024.05.06 true PCI
Warning: No installed USB configs!
lspci | grep VGA
01:00.0 VGA compatible controller: NVIDIA Corporation GA102GL [RTX A6000] (rev a1)
75:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Granite Ridge [Radeon Graphics] (rev c1)
inxi -v7azy
System:
Kernel: 6.12.4-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
clocksource: tsc avail: hpet,acpi_pm
parameters: BOOT_IMAGE=/boot/vmlinuz-6.12-x86_64
root=UUID=dcea1bc2-7b48-4506-8eb4-5f0adf8a0b36 rw quiet splash apparmor=1
security=apparmor udev.log_priority=3
Desktop: Xfce v: 4.18.1 tk: Gtk v: 3.24.43 wm: xfwm4 v: 4.18.0
with: xfce4-panel tools: xfce4-screensaver vt: 7 dm: LightDM v: 1.32.0
Distro: Manjaro base: Arch Linux
Machine:
Type: Desktop System: Gigabyte product: X870 EAGLE WIFI7 v: -CF
serial: <superuser required>
Mobo: Gigabyte model: X870 EAGLE WIFI7 v: x.x serial: <superuser required>
uuid: <superuser required> UEFI: American Megatrends LLC. v: F2
date: 08/23/2024
Battery:
Message: No system battery data found. Is one present?
Memory:
System RAM: total: 128 GiB available: 123.43 GiB used: 2.77 GiB (2.2%)
Message: For most reliable report, use superuser + dmidecode.
Array-1: capacity: 128 GiB slots: 4 modules: 4 EC: None
max-module-size: 32 GiB note: est.
Device-1: Channel-A DIMM 0 type: DDR5 detail: synchronous unbuffered
(unregistered) size: 32 GiB speed: 3600 MT/s volts: note: check curr: 1
min: 1 max: 1 width (bits): data: 64 total: 64 manufacturer: Kingston
part-no: KF556C36-32 serial: <filter>
Device-2: Channel-A DIMM 1 type: DDR5 detail: synchronous unbuffered
(unregistered) size: 32 GiB speed: 3600 MT/s volts: note: check curr: 1
min: 1 max: 1 width (bits): data: 64 total: 64 manufacturer: Kingston
part-no: KF556C36-32 serial: <filter>
Device-3: Channel-B DIMM 0 type: DDR5 detail: synchronous unbuffered
(unregistered) size: 32 GiB speed: 3600 MT/s volts: note: check curr: 1
min: 1 max: 1 width (bits): data: 64 total: 64 manufacturer: Kingston
part-no: KF556C36-32 serial: <filter>
Device-4: Channel-B DIMM 1 type: DDR5 detail: synchronous unbuffered
(unregistered) size: 32 GiB speed: 3600 MT/s volts: note: check curr: 1
min: 1 max: 1 width (bits): data: 64 total: 64 manufacturer: Kingston
part-no: KF556C36-32 serial: <filter>
CPU:
Info: model: AMD Ryzen 9 9950X bits: 64 type: MT MCP arch: N/A level: v4
note: check family: 0x1A (26) model-id: 0x44 (68) stepping: 0
microcode: 0xB40401A
Topology: cpus: 1x dies: 2 clusters: 2x1 cores: 16 threads: 32 tpc: 2
smt: enabled cache: L1: 1.2 MiB desc: d-16x48 KiB; i-16x32 KiB L2: 16 MiB
desc: 16x1024 KiB L3: 64 MiB desc: 2x32 MiB
Speed (MHz): avg: 600 min/max: 600/5752 boost: enabled scaling:
driver: amd-pstate-epp governor: powersave cores: 1: 600 2: 600 3: 600 4: 600
5: 600 6: 600 7: 600 8: 600 9: 600 10: 600 11: 600 12: 600 13: 600 14: 600
15: 600 16: 600 17: 600 18: 600 19: 600 20: 600 21: 600 22: 600 23: 600
24: 600 25: 600 26: 600 27: 600 28: 600 29: 600 30: 600 31: 600 32: 600
bogomips: 274782
Flags: 3dnowprefetch abm adx aes amd_lbr_pmc_freeze amd_lbr_v2 aperfmperf
apic arat avx avx2 avx512_bf16 avx512_bitalg avx512_vbmi2 avx512_vnni
avx512_vp2intersect avx512_vpopcntdq avx512bw avx512cd avx512dq avx512f
avx512ifma avx512vbmi avx512vl avx_vnni bmi1 bmi2 bpext bus_lock_detect
cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy constant_tsc
cpb cppc cpuid cqm cqm_llc cqm_mbm_local cqm_mbm_total cqm_occup_llc
cr8_legacy cx16 cx8 de decodeassists erms extapic extd_apicid f16c
flush_l1d flushbyasid fma fpu fsgsbase fsrm fxsr fxsr_opt gfni ht
hw_pstate ibpb ibrs ibrs_enhanced ibs invpcid irperf lahf_lm lbrv lm mba
mca mce misalignsse mmx mmxext monitor movbe movdir64b movdiri msr mtrr
mwaitx nonstop_tsc nopl npt nrip_save nx ospke osvw overflow_recov pae pat
pausefilter pclmulqdq pdpe1gb perfctr_core perfctr_llc perfctr_nb
perfmon_v2 pfthreshold pge pku pni popcnt pse pse36 rapl rdpid rdpru
rdrand rdseed rdt_a rdtscp rep_good sep sha_ni skinit smap smca smep ssbd
sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor svm svm_lock syscall tce
topoext tsc tsc_adjust tsc_scale umip user_shstk v_spec_ctrl
v_vmsave_vmload vaes vgif vmcb_clean vme vmmcall vnmi vpclmulqdq wbnoinvd
wdt xgetbv1 xsave xsavec xsaveerptr xsaveopt xsaves xtopology
Vulnerabilities:
Type: gather_data_sampling status: Not affected
Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: mmio_stale_data status: Not affected
Type: reg_file_data_sampling status: Not affected
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: Enhanced / Automatic IBRS; IBPB: conditional;
STIBP: always-on; RSB filling; PBRSB-eIBRS: Not affected; BHI: Not
affected
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: NVIDIA GA102GL [RTX A6000] driver: nvidia v: 550.135
alternate: nouveau,nvidia_drm non-free: 550.xx+ status: current (as of
2024-09; EOL~2026-12-xx) arch: Ampere code: GAxxx process: TSMC n7 (7nm)
built: 2020-2023 pcie: gen: 1 speed: 2.5 GT/s lanes: 16 link-max: gen: 4
speed: 16 GT/s ports: active: none off: DP-7 empty: DP-4,DP-5,DP-6
bus-ID: 01:00.0 chip-ID: 10de:2230 class-ID: 0300
Device-2: Advanced Micro Devices [AMD/ATI] Granite Ridge [Radeon Graphics]
vendor: Gigabyte driver: amdgpu v: kernel pcie: gen: 4 speed: 16 GT/s
lanes: 16 ports: active: none empty: DP-1, DP-2, DP-3, HDMI-A-1,
Writeback-1 bus-ID: 75:00.0 chip-ID: 1002:13c0 class-ID: 0300 temp: 34.0 C
Display: x11 server: X.org v: 1.21.1.14 compositor: xfwm4 v: 4.18.0 driver:
X: loaded: N/A failed: nvidia gpu: nvidia,nvidia-nvswitch display-ID: :0.0
screens: 1
Screen-1: 0 s-res: 1920x1080 s-size: <missing: xdpyinfo>
Monitor-1: DP-6 res: 1920x1080 hz: 60 dpi: 82 size: 597x336mm (23.5x13.23")
diag: 685mm (26.97") modes: N/A
API: EGL v: 1.5 hw: drv: nvidia drv: amd radeonsi platforms: device: 0
drv: nvidia device: 1 drv: radeonsi device: 3 drv: swrast gbm: drv: radeonsi
surfaceless: drv: nvidia x11: drv: nvidia inactive: wayland,device-2
API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: nvidia mesa v: 550.135
glx-v: 1.4 direct-render: yes renderer: NVIDIA RTX A6000/PCIe/SSE2
memory: 46.86 GiB
Audio:
Device-1: NVIDIA GA102 High Definition Audio driver: snd_hda_intel v: kernel
pcie: gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 01:00.1 chip-ID: 10de:1aef
class-ID: 0403
Device-2: Advanced Micro Devices [AMD/ATI] Rembrandt Radeon High
Definition Audio driver: snd_hda_intel v: kernel pcie: gen: 4
speed: 16 GT/s lanes: 16 bus-ID: 75:00.1 chip-ID: 1002:1640 class-ID: 0403
Device-3: Advanced Micro Devices [AMD] Family 17h/19h/1ah HD Audio
vendor: Gigabyte driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s
lanes: 16 bus-ID: 75:00.6 chip-ID: 1022:15e3 class-ID: 0403
API: ALSA v: k6.12.4-1-MANJARO status: kernel-api with: aoss
type: oss-emulator tools: alsactl,alsamixer,amixer
Server-1: JACK v: 1.9.22 status: off tools: N/A
Server-2: PipeWire v: 1.2.7 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
tools: pactl,pw-cat,pw-cli,wpctl
Network:
Device-1: Realtek RTL8125 2.5GbE vendor: Gigabyte driver: r8125
v: 9.014.01-NAPI modules: r8169 pcie: gen: 2 speed: 5 GT/s lanes: 1
port: e000 bus-ID: 07:00.0 chip-ID: 10ec:8125 class-ID: 0200
IF: enp7s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: dynamic noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: link
Device-2: MEDIATEK vendor: Foxconn driver: mt7925e v: kernel pcie: gen: 2
speed: 5 GT/s lanes: 1 port: N/A bus-ID: 08:00.0 chip-ID: 14c3:7925
class-ID: 0280
IF: wlp8s0 state: down mac: <filter>
IF-ID-1: docker0 state: down mac: <filter>
IP v4: <filter> scope: global broadcast: <filter>
Info: services: NetworkManager, sshd, systemd-timesyncd, wpa_supplicant
WAN IP: <filter>
Bluetooth:
Device-1: Foxconn / Hon Hai Wireless_Device driver: btusb v: 0.8 type: USB
rev: 2.1 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-7:3 chip-ID: 0489:e124
class-ID: e001 serial: <filter>
Report: btmgmt ID: hci0 rfk-id: 0 state: down bt-service: enabled,running
rfk-block: hardware: no software: yes address: N/A
Logical:
Message: No logical block device data found.
RAID:
Message: No RAID data found.
Drives:
Local Storage: total: 1.82 TiB used: 32.04 GiB (1.7%)
SMART Message: Required tool smartctl not installed. Check --recommends
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 990 EVO 1TB
size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 126 Gb/s
lanes: 4 tech: SSD serial: <filter> fw-rev: 0B2QKXJ7 temp: 35.9 C
scheme: GPT
ID-2: /dev/nvme1n1 maj-min: 259:1 vendor: Samsung model: SSD 990 EVO 1TB
size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
lanes: 4 tech: SSD serial: <filter> fw-rev: 0B2QKXJ7 temp: 30.9 C
scheme: MBR
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 931.22 GiB size: 915.53 GiB (98.32%) used: 28.64 GiB (3.1%)
fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:4 label: N/A
uuid: dcea1bc2-7b48-4506-8eb4-5f0adf8a0b36
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 288 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:3 label: N/A
uuid: 8F5C-DFCC
ID-3: /data raw-size: 931.51 GiB size: 915.82 GiB (98.32%)
used: 3.4 GiB (0.4%) fs: ext4 dev: /dev/nvme1n1p1 maj-min: 259:2 label: N/A
uuid: 0af4b1de-f048-4299-9135-729109254951
Swap:
Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: no
ID-1: swap-1 type: file size: 512 MiB used: 0 KiB (0.0%) priority: -2
file: /swapfile
Unmounted:
Message: No unmounted partitions found.
USB:
Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 12 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Device-1: 1-6:2 info: Integrated Express GIGABYTE Device type: HID
driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s)
lanes: 1 mode: 1.1 power: 100mA chip-ID: 048d:5711 class-ID: 0300
Device-2: 1-7:3 info: Foxconn / Hon Hai Wireless_Device type: bluetooth
driver: btusb interfaces: 3 rev: 2.1 speed: 480 Mb/s (57.2 MiB/s) lanes: 1
mode: 2.0 power: 100mA chip-ID: 0489:e124 class-ID: e001 serial: <filter>
Hub-2: 2-0:1 info: super-speed hub ports: 5 rev: 3.1
speed: 20 Gb/s (2.33 GiB/s) lanes: 2 mode: 3.2 gen-2x2 chip-ID: 1d6b:0003
class-ID: 0900
Hub-3: 3-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-4: 4-0:1 info: super-speed hub ports: 2 rev: 3.1
speed: 20 Gb/s (2.33 GiB/s) lanes: 2 mode: 3.2 gen-2x2 chip-ID: 1d6b:0003
class-ID: 0900
Hub-5: 5-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-6: 6-0:1 info: super-speed hub ports: 2 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-7: 7-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-8: 8-0:1 info: super-speed hub ports: 2 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-9: 9-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-10: 9-1:2 info: Genesys Logic Hub ports: 4 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
chip-ID: 05e3:0608 class-ID: 0900
Hub-11: 10-0:1 info: Linux Foundation 3.0 root hub ports: N/A rev: 3.0
speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003
class-ID: 0900
Sensors:
System Temperatures: cpu: 40.1 C mobo: 27.0 C
Fan Speeds (rpm): N/A
GPU: device: nvidia screen: :0.0 temp: 28 C fan: 30% device: amdgpu
temp: 35.0 C
Info:
Processes: 489 Power: uptime: 20m states: freeze,mem,disk suspend: deep
avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
suspend, test_resume image: 49.33 GiB services: upowerd,xfce4-power-manager
Init: systemd v: 256 default: graphical tool: systemctl
Packages: pm: pacman pkgs: 1144 libs: 351 tools: pamac pm: flatpak pkgs: 0
Compilers: gcc: 14.2.1 alt: 13 Shell: Bash v: 5.2.37
running-in: xfce4-terminal inxi: 3.3.36
nvidia-xconfig --query-gpu-info
Number of GPUs: 1
GPU #0:
Name : NVIDIA RTX A6000
UUID : GPU-ec4b6893-0d05-a830-2b4a-eecbd4674cfa
PCI BusID : PCI:1:0:0
Number of Display Devices: 1
Display Device 0 (TV-6):
No EDID information available.
I did try to use nvidia-xconfig to create an /etc/X11/xorg.conf file to make the AMD GPU work again (even remembered to convert 0x75 of lspci into 117 for the config bus definition), but that didn’t bring back the AMD display connection.
Anyway, here’s the unamended xconfig file:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 550.135
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/mouse"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection