Multi-Monitor on Plasma Wayland on Optimus Laptop

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1

I have a 1050Ti Max-Q GPU on my laptop and I use the proprietary Nvidia driver(525.89.02-3 now but it wasn’t working as long as I remember (and I am on unstable branch)). Multi-monitor works in X11 but when I try Wayland, multi-monitor does not work.

To troubleshoot I tried other distros.

  • I installed Ubuntu with Gnome and it worked (so the problem is not hardware issue, but it could be Plasma)
  • Then I tried KDE Neon (unstable) and it also worked (so the issue is not the Plasma either)
  • Then I tried the new Manjaro ISO and it didn’t work (so the issue is not a change by me because a new installation is not working, so I thought it is probably Manjaro)
  • And finally I tried EndeavourOS, it also didn’t work (so the issue is not from Manjaro)

My suspicion now is there is a difference between Ubuntu’s (maybe Debian) and Arch’s Nvidia driver somehow because Ubuntu based distros work but Arch based ones don’t.


inxi --admin --verbosity=7 --filter --no-host --width

System:
  Kernel: 6.1.12-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.1
    parameters: BOOT_IMAGE=/vmlinuz-6.1-x86_64
    root=UUID=1897eec7-b7ae-46d4-a635-d2ce7cf19502 rw rootflags=subvol=@ quiet
    splash vt.global_cursor_default=0
    cryptdevice=UUID=1bff087b-4a51-41ad-9ff3-a2373a713203:luks-1bff087b-4a51-41ad-9ff3-a2373a713203
    root=/dev/mapper/luks-1bff087b-4a51-41ad-9ff3-a2373a713203
    resume=UUID=5f0e9b27-1791-4732-9e6a-bab86718c296 udev.log_priority=3
    nmi_watchdog=0
  Desktop: KDE Plasma v: 5.26.5 tk: Qt v: 5.15.8 wm: kwin_x11 vt: 1 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: Acer product: Nitro AN515-51 v: V1.22
    serial: <superuser required>
  Mobo: KBL model: Freed_KLS v: V1.22 serial: <superuser required>
    UEFI: Insyde v: 1.22 date: 03/15/2019
Battery:
  ID-1: BAT1 charge: 36.4 Wh (100.0%) condition: 36.4/48.9 Wh (74.4%)
    volts: 16.2 min: 15.2 model: LG 004B384234314341 type: Li-ion
    serial: <filter> status: full
Memory:
  RAM: total: 15.51 GiB used: 5.26 GiB (33.9%)
  RAM Report: permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Core i7-7700HQ bits: 64 type: MT MCP arch: Kaby Lake
    gen: core 7 level: v3 note: check built: 2018 process: Intel 14nm family: 6
    model-id: 0x9E (158) stepping: 9 microcode: 0x9A
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 6 MiB desc: 1x6 MiB
  Speed (MHz): avg: 800 min/max: 800/3800 scaling: driver: intel_pstate
    governor: powersave cores: 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 7: 800
    8: 800 bogomips: 44817
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon
    art avx avx2 bmi1 bmi2 bts clflush clflushopt cmov constant_tsc cpuid
    cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms est
    f16c flexpriority flush_l1d fma fpu fsgsbase fxsr ht hwp hwp_act_window
    hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid invpcid_single lahf_lm
    lm mca mce mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat pbe
    pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts
    rdrand rdseed rdtscp rep_good sdbg sep smap smep ss ssbd sse sse2 sse4_1
    sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust
    tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt
    xsaves xtopology xtpr
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    vulnerable
  Type: mds status: Vulnerable: Clear CPU buffers attempted, no microcode;
    SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data status: Vulnerable: Clear CPU buffers attempted, no
    microcode; SMT vulnerable
  Type: retbleed mitigation: IBRS
  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: IBRS, IBPB: conditional, RSB filling,
    PBRSB-eIBRS: Not affected
  Type: srbds status: Vulnerable: No microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel HD Graphics 630 vendor: Acer Incorporated ALI driver: i915
    v: kernel arch: Gen-9.5 process: Intel 14nm built: 2016-20 ports:
    active: eDP-1 empty: none bus-ID: 00:02.0 chip-ID: 8086:591b class-ID: 0300
  Device-2: NVIDIA GP107M [GeForce GTX 1050 Ti Mobile]
    vendor: Acer Incorporated ALI driver: nvidia v: 525.89.02
    alternate: nouveau,nvidia_drm non-free: 525.xx+
    status: current (as of 2023-02) arch: Pascal code: GP10x process: TSMC 16nm
    built: 2016-21 pcie: gen: 1 speed: 2.5 GT/s lanes: 16 link-max: gen: 3
    speed: 8 GT/s bus-ID: 01:00.0 chip-ID: 10de:1c8c class-ID: 0300
  Device-3: Chicony HD WebCam type: USB driver: uvcvideo bus-ID: 1-9:7
    chip-ID: 04f2:b5f7 class-ID: 0e02
  Display: x11 server: X.Org v: 21.1.7 with: Xwayland v: 22.1.8
    compositor: kwin_x11 driver: X: loaded: modesetting,nvidia
    alternate: fbdev,nouveau,nv,vesa dri: iris gpu: i915 display-ID: :0
    screens: 1
  Screen-1: 0 s-res: 3840x1080 s-dpi: 96 s-size: 1013x285mm (39.88x11.22")
    s-diag: 1052mm (41.43")
  Monitor-1: HDMI-1-0 pos: left res: 1920x1080 hz: 60 dpi: 102
    size: 477x268mm (18.78x10.55") diag: 547mm (21.54") modes: N/A
  Monitor-2: eDP-1 pos: primary,right res: 1920x1080 hz: 60 dpi: 142
    size: 344x194mm (13.54x7.64") diag: 395mm (15.55") modes: N/A
  API: OpenGL v: 4.6 Mesa 22.3.5 renderer: Mesa Intel HD Graphics 630 (KBL
    GT2) direct-render: Yes
Audio:
  Device-1: Intel CM238 HD Audio vendor: Acer Incorporated ALI
    driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a171
    class-ID: 0403
  Device-2: NVIDIA GP107GL High Definition Audio
    vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 16 link-max: gen: 3 speed: 8 GT/s bus-ID: 01:00.1
    chip-ID: 10de:0fb9 class-ID: 0403
  Sound API: ALSA v: k6.1.12-1-MANJARO running: yes
  Sound Server-1: PulseAudio v: 16.1 running: no
  Sound Server-2: PipeWire v: 0.3.65 running: yes
Network:
  Device-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter
    vendor: Lite-On driver: ath10k_pci v: kernel pcie: gen: 1 speed: 2.5 GT/s
    lanes: 1 bus-ID: 02:00.0 chip-ID: 168c:003e class-ID: 0280
  IF: wlp2s0 state: down mac: <filter>
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Acer Incorporated ALI driver: r8168 v: 8.050.03-NAPI modules: r8169
    pcie: gen: 1 speed: 2.5 GT/s lanes: 1 port: 3000 bus-ID: 03:00.1
    chip-ID: 10ec:8168 class-ID: 0200
  IF: enp3s0f1 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
  IF-ID-1: virbr0 state: down mac: <filter>
  IP v4: <filter> scope: global broadcast: <filter>
  WAN IP: <filter>
Bluetooth:
  Device-1: Lite-On type: USB driver: btusb v: 0.8 bus-ID: 1-7:6
    chip-ID: 04ca:3016 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 2 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
  Device-1: luks-1bff087b-4a51-41ad-9ff3-a2373a713203 maj-min: 254:0
    type: LUKS dm: dm-0 size: 830.17 GiB
  Components:
  p-1: nvme0n1p3 maj-min: 259:3 size: 830.17 GiB
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 1.36 TiB used: 583.01 GiB (41.7%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 980 PRO 1TB
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
    lanes: 4 type: SSD serial: <filter> rev: 3B2QGXA7 temp: 42.9 C scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 vendor: Toshiba model: MQ01ABD050
    size: 465.76 GiB block-size: physical: 4096 B logical: 512 B speed: 3.0 Gb/s
    type: HDD rpm: 5400 serial: <filter> rev: 5A scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 830.17 GiB size: 830.17 GiB (100.00%)
    used: 582.34 GiB (70.1%) fs: btrfs dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-1bff087b-4a51-41ad-9ff3-a2373a713203 label: N/A
    uuid: 1897eec7-b7ae-46d4-a635-d2ce7cf19502
  ID-2: /boot raw-size: 2 GiB size: 1.9 GiB (95.01%) used: 675.2 MiB (34.7%)
    fs: ext4 dev: /dev/nvme0n1p1 maj-min: 259:1 label: N/A
    uuid: 5820bada-78a0-40bf-9dec-100761341f76
  ID-3: /boot/efi raw-size: 250 MiB size: 246.1 MiB (98.46%)
    used: 5.7 MiB (2.3%) fs: vfat dev: /dev/nvme0n1p2 maj-min: 259:2
    label: NO_LABEL uuid: 54AB-7859
  ID-4: /games raw-size: 830.17 GiB size: 830.17 GiB (100.00%)
    used: 582.34 GiB (70.1%) fs: btrfs dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-1bff087b-4a51-41ad-9ff3-a2373a713203 label: N/A
    uuid: 1897eec7-b7ae-46d4-a635-d2ce7cf19502
  ID-5: /home raw-size: 830.17 GiB size: 830.17 GiB (100.00%)
    used: 582.34 GiB (70.1%) fs: btrfs dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-1bff087b-4a51-41ad-9ff3-a2373a713203 label: N/A
    uuid: 1897eec7-b7ae-46d4-a635-d2ce7cf19502
  ID-6: /var/cache raw-size: 830.17 GiB size: 830.17 GiB (100.00%)
    used: 582.34 GiB (70.1%) fs: btrfs dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-1bff087b-4a51-41ad-9ff3-a2373a713203 label: N/A
    uuid: 1897eec7-b7ae-46d4-a635-d2ce7cf19502
  ID-7: /var/log raw-size: 830.17 GiB size: 830.17 GiB (100.00%)
    used: 582.34 GiB (70.1%) fs: btrfs dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-1bff087b-4a51-41ad-9ff3-a2373a713203 label: N/A
    uuid: 1897eec7-b7ae-46d4-a635-d2ce7cf19502
  ID-8: /virtual raw-size: 830.17 GiB size: 830.17 GiB (100.00%)
    used: 582.34 GiB (70.1%) fs: btrfs dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-1bff087b-4a51-41ad-9ff3-a2373a713203 label: N/A
    uuid: 1897eec7-b7ae-46d4-a635-d2ce7cf19502
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: partition size: 32 GiB used: 0 KiB (0.0%) priority: -2
    dev: /dev/nvme0n1p4 maj-min: 259:4 label: N/A
    uuid: 5f0e9b27-1791-4732-9e6a-bab86718c296
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 16 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 1-3:2 info: Genesys Logic Hub ports: 4 rev: 2.1 speed: 480 Mb/s
    power: 100mA chip-ID: 05e3:0610 class-ID: 0900
  Device-1: 1-3.4:4 info: Samsung Galaxy A5 (MTP) type: Still Imaging
    driver: N/A interfaces: 2 rev: 2.1 speed: 480 Mb/s power: 64mA
    chip-ID: 04e8:6860 class-ID: 0601 serial: <filter>
  Device-2: 1-5:3 info: Razer USA RC30-0315 Gaming Mouse [Basilisk X
    HyperSpeed] type: Mouse,Keyboard driver: razermouse,usbhid interfaces: 3
    rev: 2.0 speed: 12 Mb/s power: 500mA chip-ID: 1532:0083 class-ID: 0300
  Device-3: 1-6:5 info: Corsair K55 RGB PRO Gaming Keyboard
    type: Keyboard,HID driver: usbfs interfaces: 3 rev: 1.1 speed: 12 Mb/s
    power: 500mA chip-ID: 1b1c:1ba4 class-ID: 0300 serial: <filter>
  Device-4: 1-7:6 info: Lite-On type: Bluetooth driver: btusb interfaces: 2
    rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 04ca:3016 class-ID: e001
  Device-5: 1-9:7 info: Chicony HD WebCam type: Video driver: uvcvideo
    interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 04f2:b5f7
    class-ID: 0e02
  Hub-3: 2-0:1 info: Super-speed hub ports: 8 rev: 3.0 speed: 5 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-4: 2-3:2 info: Genesys Logic Hub ports: 4 rev: 3.1 speed: 5 Gb/s
    chip-ID: 05e3:0612 class-ID: 0900
Sensors:
  System Temperatures: cpu: 48.0 C pch: 47.0 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 297 Uptime: 1h 35m wakeups: 1 Init: systemd v: 252
  default: graphical tool: systemctl Compilers: gcc: 12.2.1 clang: 15.0.7
  Packages: pm: pacman pkgs: 1691 libs: 417 tools: pamac,paru pm: flatpak
  pkgs: 0 Shell: fish v: 3.6.0 default: Bash v: 5.1.16 running-in: konsole
  inxi: 3.3.25
2

Plasma + Nvidia + Wayland are not there yet. You can see on Plasma/Wayland/Nvidia - KDE Community Wiki more about the Known Limitations.

3

As I mentioned KDE Neon worked. But I think I should also test the stable KDE Neon because (hopefully) 5.27 update could’ve fixed the problem

4

wayland won’t work with this. use X11 instead.

5

I couldn’t find KDE Neon’s non-5.27 iso so I tried Kubuntu with KDE 5.25.5 and Multi-Monitor on Wayland works. So the issue is not my hardware nor Plasma.

6

Now update it to 5.26.5 and see if the issue is back …

7

Kubuntu still doesn’t have that. I couldn’t try that but I made Wayland Multi-Monitor work on Manjaro another way.

Apparently when I tried to enable Nvidia DRM kernel mode setting by adding the kernel parameter and got black screen and then decided to use the Early loading method without the kernel parameter, I assumed it worked. But when I was searching for my Multi-Monitor issue I came across how to check if DRM was working or not. And realized I needed the kernel parameter, then it again resulted in black screen at boot. Checked some logs and realized sddm couldn’t find a display with the error Failed to read display number from pipe. Everybody was suggesting to look at xorg configs at /etc but I didn’t have any related to displays/screens, just keyboard and touchpad.

Then I remembered it is possible to make sddm run on Wayland by using sddm-git and some configs. I tried it and it works. The sddm experience is not great with flickering and stuff but I don’t care about it. The only real issue I have right now is my external monitor feels sluggish (my laptops screen feels snappier than before). I’m going back to X11 for now but at every Nvidia or sddm update I will check if anything is fixed and edit this post for other people.

But this still doesn’t explain why Ubuntu-based distros don’t have this problem.

Edit: Apparently my issue of external monitor feeling sluggish is known by the KDE

8

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