Packet tracer

Issues & Assistance Sway
1

So i tried installing packet tracer for school, but when i start it from terminal in says:
Starting Packet Tracer 8.2.1

Fatal: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: linuxfb, xcb.

/usr/bin/packettracer línia 8: 30307 Avortat                 (s'ha bolcat la memòria)./PacketTracer "$@"

I’ve searched about linuxfb and xcb, but i found nothing to resolve the problem

garuda-inxi
System:
  Kernel: 6.6.3-zen1-1-zen arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
    clocksource: tsc available: acpi_pm
    parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen
    root=UUID=9a32edc4-ec1a-4a8b-aea5-f9d1c3bcfc11 rw rootflags=subvol=@
    quiet loglevel=3 ibt=off
  Desktop: sway v: 1.8.1 info: waybar vt: 1 dm: greetd Distro: Garuda Linux
    base: Arch Linux
Machine:
  Type: Laptop System: Micro-Star product: Prestige 16 A12UD v: REV:1.0
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: Micro-Star model: MS-1592 v: REV:1.0 serial: <superuser required>
    UEFI: American Megatrends LLC. v: E1592IMS.10D date: 03/29/2023
Battery:
  ID-1: BAT1 charge: 51.5 Wh (70.5%) condition: 73.0/80.3 Wh (90.9%)
    volts: 16.7 min: 15.2 model: MSI BIF0_9 type: Li-ion serial: N/A
    status: charging
CPU:
  Info: model: 12th Gen Intel Core i7-1280P bits: 64 type: MST AMCP
    arch: Alder Lake level: v3 note: check built: 2021+
    process: Intel 7 (10nm ESF) family: 6 model-id: 0x9A (154) stepping: 3
    microcode: 0x430
  Topology: cpus: 1x cores: 14 mt: 6 tpc: 2 st: 8 threads: 20 smt: enabled
    cache: L1: 1.2 MiB desc: d-8x32 KiB, 6x48 KiB; i-6x32 KiB, 8x64 KiB
    L2: 11.5 MiB desc: 6x1.2 MiB, 2x2 MiB L3: 24 MiB desc: 1x24 MiB
  Speed (MHz): avg: 413 high: 500 min/max: 400/4700:4800:3600 scaling:
    driver: intel_pstate governor: powersave cores: 1: 400 2: 400 3: 400 4: 400
    5: 497 6: 400 7: 500 8: 400 9: 400 10: 400 11: 479 12: 400 13: 400 14: 400
    15: 400 16: 400 17: 400 18: 400 19: 400 20: 400 bogomips: 79872
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities: <filter>
Graphics:
  Device-1: Intel Alder Lake-P GT2 [Iris Xe Graphics] vendor: Micro-Star MSI
    driver: i915 v: kernel arch: Gen-12.2 process: Intel 10nm built: 2021-22+
    ports: active: eDP-1 empty: DP-1,DP-2,HDMI-A-1 bus-ID: 00:02.0
    chip-ID: 8086:46a6 class-ID: 0300
  Device-2: NVIDIA GA107M [GeForce RTX 3050 Ti Mobile]
    vendor: Micro-Star MSI driver: nouveau v: kernel non-free: 545.xx+
    status: current (as of 2023-10; EOL~2026-12-xx) arch: Ampere code: GAxxx
    process: TSMC n7 (7nm) built: 2020-2023 pcie: gen: 4 speed: 16 GT/s
    lanes: 4 link-max: lanes: 16 bus-ID: 01:00.0 chip-ID: 10de:25a0
    class-ID: 0302
  Display: wayland server: Xwayland v: 23.2.2 compositor: sway v: 1.8.1
    driver: gpu: i915 display-ID: 1
  Monitor-1: eDP-1 model: AU Optronics 0xdb95 built: 2021 res: 2560x1600
    hz: 165 dpi: 189 gamma: 1.2 scale: 1.29999995231628
    size: 344x215mm (13.54x8.46") diag: 406mm (16") ratio: 16:10
    modes: 2560x1600
  API: Vulkan v: 1.3.269 layers: 3 device: 0 type: integrated-gpu name: Intel
    Graphics (ADL GT2) driver: mesa intel v: 23.2.1-arch1.2
    device-ID: 8086:46a6 surfaces: xcb,xlib,wayland device: 1 type: cpu
    name: llvmpipe (LLVM 16.0.6 256 bits) driver: mesa llvmpipe
    v: 23.2.1-arch1.2 (LLVM 16.0.6) device-ID: 10005:0000
    surfaces: xcb,xlib,wayland
  API: EGL Message: EGL data requires eglinfo. Check --recommends.
Audio:
  Device-1: Intel Alder Lake PCH-P High Definition Audio
    vendor: Micro-Star MSI driver: sof-audio-pci-intel-tgl
    alternate: snd_hda_intel,snd_sof_pci_intel_tgl bus-ID: 00:1f.3
    chip-ID: 8086:51c8 class-ID: 0401
  API: ALSA v: k6.6.3-zen1-1-zen status: kernel-api tools: N/A
  Server-1: sndiod v: N/A status: off tools: aucat,midicat,sndioctl
  Server-2: PipeWire v: 1.0.0 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Intel Alder Lake-P PCH CNVi WiFi vendor: Rivet Networks
    driver: iwlwifi v: kernel bus-ID: 00:14.3 chip-ID: 8086:51f0 class-ID: 0280
  IF: wlo1 state: down mac: <filter>
  Device-2: Realtek RTL8153 Gigabit Ethernet Adapter driver: r8152 type: USB
    rev: 3.2 speed: 5 Gb/s lanes: 1 mode: 3.2 gen-1x1 bus-ID: 4-2.4:3
    chip-ID: 0bda:8153 class-ID: 0000 serial: <filter>
  IF: enp0s20f0u2u4 state: up speed: 100 Mbps duplex: full mac: <filter>
Bluetooth:
  Device-1: Intel AX211 Bluetooth driver: btusb v: 0.8 type: USB rev: 2.0
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 3-10:5 chip-ID: 8087:0033
    class-ID: e001
  Report: btmgmt ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 5.3
    lmp-v: 12 status: discoverable: no pairing: no class-ID: 7c010c
Drives:
  Local Storage: total: 953.87 GiB used: 14.55 GiB (1.5%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung
    model: MZVL21T0HCLR-00B00 size: 953.87 GiB block-size: physical: 512 B
    logical: 512 B speed: 63.2 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: GXA7601Q temp: 34.9 C scheme: GPT
Partition:
  ID-1: / raw-size: 75.71 GiB size: 75.71 GiB (100.00%)
    used: 14.52 GiB (19.2%) fs: btrfs dev: /dev/nvme0n1p5 maj-min: 259:5
  ID-2: /boot/efi raw-size: 100 MiB size: 96 MiB (96.00%)
    used: 30.7 MiB (32.0%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
  ID-3: /home raw-size: 75.71 GiB size: 75.71 GiB (100.00%)
    used: 14.52 GiB (19.2%) fs: btrfs dev: /dev/nvme0n1p5 maj-min: 259:5
  ID-4: /var/log raw-size: 75.71 GiB size: 75.71 GiB (100.00%)
    used: 14.52 GiB (19.2%) fs: btrfs dev: /dev/nvme0n1p5 maj-min: 259:5
  ID-5: /var/tmp raw-size: 75.71 GiB size: 75.71 GiB (100.00%)
    used: 14.52 GiB (19.2%) fs: btrfs dev: /dev/nvme0n1p5 maj-min: 259:5
Swap:
  Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default) zswap: no
  ID-1: swap-1 type: zram size: 15.32 GiB used: 0 KiB (0.0%) priority: 100
    comp: zstd avail: lzo,lzo-rle,lz4,lz4hc,842 max-streams: 20 dev: /dev/zram0
Sensors:
  Src: /sys System Temperatures: cpu: 30.0 C mobo: N/A
  Fan Speeds (rpm): N/A
Info:
  Processes: 457 Uptime: 1h 24m wakeups: 0 Memory: total: 16 GiB note: est.
  available: 15.32 GiB used: 4.8 GiB (31.3%) Init: systemd v: 254
  default: graphical tool: systemctl Compilers: gcc: 13.2.1 Packages:
  pm: pacman pkgs: 1297 libs: 405 tools: paru Shell: fish v: 3.6.1
  running-in: alacritty inxi: 3.3.31
Garuda (2.6.19-2):
  System install date:     2023-12-01
  Last full system update: 2023-12-04 ↻
  Is partially upgraded:   No
  Relevant software:       snapper NetworkManager dracut
  Windows dual boot:       Probably (Run as root to verify)
  Failed units:
2

↻ means there is a pending reboot. Try seeing if the issue persists after a reboot.

1 Like
3

If still not working, try launching from terminal with

packettracer -platform xcb
4

It opens and says this:

Starting Packet Tracer 8.2.1
Qt WebEngine resources not found at /opt/packettracer/bin/resources. Trying parent directory...
Installed Qt WebEngine locales directory not found at location /opt/packettracer/bin/translations/qtwebengine_locales. Trying application directory...
Qt WebEngine resources not found at /opt/packettracer/bin/resources. Trying parent directory...
Installed Qt WebEngine locales directory not found at location /opt/packettracer/bin/translations/qtwebengine_locales. Trying application directory...
Fatal: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: linuxfb, xcb.

Fatal: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Is there a way to install linuxfb and xcb so the app can be opened normally

5

Looks like it fails to find the Qt plugin for wayland, which depending on the Qt version used by Packet Tracer (5 I guess), is provided by either qt-wayland or qt6-wayland.

I recall having this problem in the past but forgot the details.
I have a line in my history where I run a program with

QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/qt/plugins/platforms COMMAND

I can’t remember if that worked though.

Online I see advised

QT_PLUGIN_PATH=/usr/lib/qt/plugins

instead.

Give both a try, it won’t hurt.
It’s /usr/lib/qt6/... in case it’s Qt 6.

QT_QPA_PLATFORM=wayland

should be already set by default.

/usr/lib/qt/plugins/platforms (on my computer) 
.rwxr-xr-x  18k root 25 nov 14:08  libqeglfs.so
.rwxr-xr-x 449k root 25 nov 14:08  libqlinuxfb.so
.rwxr-xr-x 141k root 25 nov 14:08  libqminimal.so
.rwxr-xr-x 166k root 25 nov 14:08  libqminimalegl.so
.rwxr-xr-x 174k root 25 nov 14:08  libqoffscreen.so
.rwxr-xr-x 244k root 25 nov 14:08  libqvnc.so
.rwxr-xr-x  68k root 24 ott 11:36  libqwayland-egl.so
.rwxr-xr-x  18k root 24 ott 11:36  libqwayland-generic.so
.rwxr-xr-x  72k root 24 ott 11:36  libqwayland-xcomposite-egl.so
.rwxr-xr-x  51k root 24 ott 11:36  libqwayland-xcomposite-glx.so
.rwxr-xr-x  18k root 25 nov 14:08  libqxcb.so
1 Like
6

I’ve this in /usr/lib/qt/plugins/platforms:

.rwxr-xr-x  18k root 25 nov 14:08  libqeglfs.so
.rwxr-xr-x 449k root 25 nov 14:08  libqlinuxfb.so
.rwxr-xr-x 141k root 25 nov 14:08  libqminimal.so
.rwxr-xr-x 166k root 25 nov 14:08  libqminimalegl.so
.rwxr-xr-x 174k root 25 nov 14:08  libqoffscreen.so
.rwxr-xr-x 244k root 25 nov 14:08  libqvnc.so
.rwxr-xr-x  68k root 24 oct 11:36  libqwayland-egl.so
.rwxr-xr-x  18k root 24 oct 11:36  libqwayland-generic.so
.rwxr-xr-x  72k root 24 oct 11:36  libqwayland-xcomposite-egl.so
.rwxr-xr-x  51k root 24 oct 11:36  libqwayland-xcomposite-glx.so
.rwxr-xr-x  18k root 25 nov 14:08  libqxcb.so

And I’ve this in /usr/lib/qt6/plugins/platforms:

.rwxr-xr-x  19k root 27 nov 08:51  libqeglfs.so
.rwxr-xr-x 373k root 27 nov 08:51  libqlinuxfb.so
.rwxr-xr-x  31k root 27 nov 08:51  libqminimal.so
.rwxr-xr-x  43k root 27 nov 08:51  libqminimalegl.so
.rwxr-xr-x 109k root 27 nov 08:51  libqoffscreen.so
.rwxr-xr-x 233k root 27 nov 08:51  libqvkkhrdisplay.so
.rwxr-xr-x 110k root 27 nov 08:51  libqvnc.so
.rwxr-xr-x  23k root 27 nov 17:34  libqwayland-egl.so
.rwxr-xr-x  19k root 27 nov 17:34  libqwayland-generic.so
.rwxr-xr-x  19k root 27 nov 08:51  libqxcb.so
7

OK so the files are there (would have surprised me otherwise), did any of those two variables work?

edit: note the VARIABLE=VALUE command syntax, it runs command with that variable temporarily set.

8

They don’t work

 ╭─confusedyeti@confusedyeti in /usr/lib/qt6/plugins/platforms🔒 as 🧙 took 10ms
 ╰─λ QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/qt/plugins/platforms
fish: Unsupported use of '='. In fish, please use 'set QT_QPA_PLATFORM_PLUGIN_PATH /usr/lib/qt/plugins/platforms'.


 ╭─confusedyeti@confusedyeti in /usr/lib/qt6/plugins/platforms🔒 as 🧙 took 10ms
[🔴] × set QT_QPA_PLATFORM_PLUGIN_PATH /usr/lib/qt/plugins/platforms
9

See “edit:” above, not just VARIABLE=VALUE then command, but all in one line.

10

QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/qt/plugins/platforms COMMAND,

what do I need to wrtie instead of command?

11

packettracer?
Anyway, the second line I did not notice before, that is OK too.
Just run it, you did set the variable in that shell session.

12 
QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/qt/plugins/platforms packettracer
Starting Packet Tracer 8.2.1
Qt WebEngine resources not found at /opt/packettracer/bin/resources. Trying parent directory...
Installed Qt WebEngine locales directory not found at location /opt/packettracer/bin/translations/qtwebengine_locales. Trying application directory...
13

That’s all the error message?
So it now found the Qt plugin, but still fails to find its own resources (and locales, but that’s not a show stopper)?

14

It didn’t a pear any new line but it does not stop

15

I mean, no more

Fatal: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

?

16

No, this error does not appear anymore

17

Good.
How is packettracer installed? AUR package or direct download from Cisco or?

18

I followed the aur, git clone it, go to packet tracer page, download .deb put it into the directory i just clonet and then makepkg -i

1 Like
19

Ah, my sight is not good.
It’s not “its own resources”, it’s still something Qt it cannot find.
Give me a minute.

Is qt5-webengine installed?
Nevermind, it’s in the PKGBUILD dependencies… must be something else.

20

Yes and I’ve reinstall it