Permissions and Plex problem

[andymx]

I installed Plex, but I have a problem with permissions. I cannot point Plex to my folder where I keep my videos etc. The Plex website states

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If no content at all is being found or you’re unable to see particular directories when trying to set up a library, you may be encountering permission issues (which prevent Plex from being allowed to see/access the content). The user account under which your Plex Media Server is running needs to have “permission” to access your content.
For Windows or OS X installs, this will almost always be the user account logged into the computer. For NAS- or Linux-based Plex Media Server installs, it will usually be the plex:plex user in a default install.
If using a network share, you need to ensure that the share is under a user that has appropriate access permissions.
The user account needs to have at least read and execute permission for the directories and content.

Tip!: You’ll want to make sure that not only the folder that contains the files but also the files themselves have the correct permissions. That includes new files you copy into the content location.

Unfortunately it doesn't say exactly how to change permissions. When I open MX User Manager I can only see one user, me. In the Group Membership tab is see a group plex. I enabled that for my user name, but I still cannot see my directories in the Plex Libraries server set up.

[FullScale4Me]

You didn't state the version of MX involved. Please post your QSI = Quick System Info from menu (Copy for Forum).

If its MX Linux 23 there is a likelihood the MX Firewall is blocking port 32400. An allow 'rule' would have to be added/entered in that Firewall.

MX User Manual section 4.5.1 applies. Not being a Plex user it is not known to me if that is the only port involved.

[andymx]

I forgot to post my QSI!

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Snapshot created on: 20231002_0912
System:
  Kernel: 6.1.0-12-amd64 [6.1.52-1] arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.1.0-12-amd64 root=UUID=<filter> ro quiet splash
    init=/lib/systemd/systemd
  Desktop: Xfce v: 4.18.1 tk: Gtk v: 3.24.36 info: xfce4-panel wm: xfwm v: 4.18.0 vt: 7
    dm: LightDM v: 1.26.0 Distro: MX-23_x64 Libretto October 02  2023 base: Debian GNU/Linux 12
    (bookworm)
Machine:
  Type: Convertible System: Dell product: Inspiron 5482 v: N/A serial: <superuser required>
    Chassis: type: 31 serial: <superuser required>
  Mobo: Dell model: 0JGVW4 v: A00 serial: <superuser required> UEFI: Dell v: 2.18.0
    date: 11/11/2022
Battery:
  ID-1: BAT0 charge: 39.1 Wh (100.0%) condition: 39.1/42.0 Wh (93.1%) volts: 12.6 min: 11.4
    model: BYD DELL FW8KR87 type: Li-ion serial: <filter> status: full
  Device-1: apple_mfi_fastcharge model: N/A serial: N/A charge: N/A status: N/A
  Device-2: hid-0018:04F3:2751.0002-battery model: ELAN2097:00 04F3:2751 serial: N/A charge: N/A
    status: N/A
CPU:
  Info: model: Intel Core i7-8565U bits: 64 type: MT MCP arch: Whiskey Lake gen: core 8 level: v3
    note: check built: 2018 process: Intel 14nm family: 6 model-id: 0x8E (142) stepping: 0xB (11)
    microcode: 0xF4
  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: 8 MiB desc: 1x8 MiB
  Speed (MHz): avg: 1300 min/max: 400/4600 scaling: driver: intel_pstate governor: powersave
    cores: 1: 1300 2: 1300 3: 1300 4: 1300 5: 1300 6: 1300 7: 1300 8: 1300 bogomips: 31999
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: gather_data_sampling mitigation: Microcode
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf status: Not affected
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  Type: meltdown status: Not affected
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT vulnerable
  Type: retbleed mitigation: IBRS
  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: IBRS, IBPB: conditional, STIBP: conditional, RSB filling,
    PBRSB-eIBRS: Not affected
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel WhiskeyLake-U GT2 [UHD Graphics 620] vendor: Dell Inspiron 5482 driver: i915
    v: kernel arch: Gen-9.5 process: Intel 14nm built: 2016-20 ports: active: HDMI-A-1 off: eDP-1
    empty: DP-1,HDMI-A-2 bus-ID: 00:02.0 chip-ID: 8086:3ea0 class-ID: 0300
  Device-2: Realtek Integrated_Webcam_HD type: USB driver: uvcvideo bus-ID: 1-6:9
    chip-ID: 0bda:5521 class-ID: 0e02 serial: <filter>
  Display: x11 server: X.Org v: 1.21.1.7 compositor: xfwm v: 4.18.0 driver: X:
    loaded: modesetting unloaded: fbdev,vesa dri: iris gpu: i915 display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x286mm (20.00x11.26") s-diag: 583mm (22.95")
  Monitor-1: HDMI-A-1 mapped: HDMI-1 pos: primary model: BenQ GW2480 serial: <filter> built: 2018
    res: 1920x1080 hz: 60 dpi: 93 gamma: 1.2 size: 527x296mm (20.75x11.65") diag: 604mm (23.8")
    ratio: 16:9 modes: max: 1920x1080 min: 720x400
  Monitor-2: eDP-1 note: disabled model: AU Optronics 0x453d built: 2018 res: 1920x1080 dpi: 158
    gamma: 1.2 size: 309x174mm (12.17x6.85") diag: 355mm (14") ratio: 16:9 modes: 1920x1080
  API: OpenGL v: 4.6 Mesa 22.3.6 renderer: Mesa Intel UHD Graphics 620 (WHL GT2)
    direct-render: Yes
Audio:
  Device-1: Intel Cannon Point-LP High Definition Audio vendor: Dell Inspiron 5482
    driver: snd_hda_intel v: kernel alternate: snd_soc_skl,snd_sof_pci_intel_cnl bus-ID: 00:1f.3
    chip-ID: 8086:9dc8 class-ID: 0403
  API: ALSA v: k6.1.0-12-amd64 status: kernel-api tools: alsamixer,amixer
  Server-1: PipeWire v: 0.3.65 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 Cannon Point-LP CNVi [Wireless-AC] driver: iwlwifi v: kernel modules: wl
    bus-ID: 00:14.3 chip-ID: 8086:9df0 class-ID: 0280
  IF: wlan0 state: up mac: <filter>
  Device-2: ASIX AX88179 Gigabit Ethernet type: USB driver: ax88179_178a bus-ID: 2-1:2
    chip-ID: 0b95:1790 class-ID: ff00 serial: <filter>
  IF: eth0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IF-ID-1: eth1 state: down mac: <filter>
Bluetooth:
  Device-1: Intel Bluetooth 9460/9560 Jefferson Peak (JfP) type: USB driver: btusb v: 0.8
    bus-ID: 1-10:12 chip-ID: 8087:0aaa class-ID: e001
  Report: hciconfig ID: hci0 rfk-id: 1 state: down bt-service: enabled,running rfk-block:
    hardware: no software: yes address: <filter>
  Info: acl-mtu: 0:0 sco-mtu: 0:0 link-mode: peripheral accept
Drives:
  Local Storage: total: 20.47 TiB used: 439.6 GiB (2.1%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Kingston model: SNV2S250G size: 232.89 GiB
    block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s lanes: 4 type: SSD serial: <filter>
    rev: ELFK0S.6 temp: 28.9 C scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 type: USB model: External USB3.0 size: 238.47 GiB block-size:
    physical: 4096 B logical: 512 B type: N/A serial: <filter> rev: 0204 scheme: GPT
  ID-3: /dev/sdb maj-min: 8:16 type: USB model: External USB 3.0 size: 3.64 TiB block-size:
    physical: 4096 B logical: 512 B type: N/A serial: <filter> rev: 0104 scheme: GPT
  ID-4: /dev/sdc maj-min: 8:32 type: USB vendor: Western Digital model: WD40EMAZ-11LW3B0
    size: 3.64 TiB block-size: physical: 4096 B logical: 512 B type: HDD rpm: 5400 serial: <filter>
    rev: 1030 scheme: GPT
  ID-5: /dev/sdd maj-min: 8:48 type: USB vendor: Western Digital model: WD40NDZW-11MR8S1
    size: 3.64 TiB block-size: physical: 4096 B logical: 512 B type: HDD rpm: 5400 serial: <filter>
    rev: 1018 scheme: GPT
  ID-6: /dev/sde maj-min: 8:64 type: USB vendor: Western Digital model: WD20EZRZ-00Z5HB0
    size: 1.82 TiB block-size: physical: 4096 B logical: 512 B type: HDD rpm: 31354 serial: <filter>
    rev: 80.0 scheme: GPT
  ID-7: /dev/sdf maj-min: 8:80 type: USB model: TO Exter nal USB 3.0 size: 3.64 TiB block-size:
    physical: 4096 B logical: 512 B type: N/A serial: <filter> rev: 0104 scheme: GPT
  ID-8: /dev/sdg maj-min: 8:96 type: USB vendor: Seagate model: ST4000DM000-1F2168 size: 3.64 TiB
    block-size: physical: 4096 B logical: 4096 B type: HDD rpm: 5900 serial: <filter> rev: 0202
    scheme: GPT
Partition:
  ID-1: / raw-size: 238.22 GiB size: 233.43 GiB (97.99%) used: 45.99 GiB (19.7%) fs: ext4
    dev: /dev/sda2 maj-min: 8:2
  ID-2: /boot/efi raw-size: 256 MiB size: 252 MiB (98.46%) used: 274 KiB (0.1%) fs: vfat
    dev: /dev/sda1 maj-min: 8:1
Swap:
  Kernel: swappiness: 15 (default 60) cache-pressure: 100 (default)
  ID-1: swap-1 type: file size: 3 GiB used: 0 KiB (0.0%) priority: -2 file: /swap/swap
Sensors:
  System Temperatures: cpu: 49.0 C pch: 46.0 C mobo: 47.0 C
  Fan Speeds (RPM): cpu: 0
Repos:
  Packages: 2175 pm: dpkg pkgs: 2169 libs: 1110 tools: apt,apt-get,aptitude,nala,synaptic pm: rpm
    pkgs: 0 pm: flatpak pkgs: 6
  No active apt repos in: /etc/apt/sources.list
  Active apt repos in: /etc/apt/sources.list.d/debian-stable-updates.list
    1: deb http://deb.debian.org/debian bookworm-updates main contrib non-free non-free-firmware
  Active apt repos in: /etc/apt/sources.list.d/debian.list
    1: deb http://deb.debian.org/debian bookworm main contrib non-free non-free-firmware
    2: deb http://security.debian.org/debian-security bookworm-security main contrib non-free non-free-firmware
  Active apt repos in: /etc/apt/sources.list.d/mx.list
    1: deb http://ftp.cc.uoc.gr/mirrors/linux/mx/mx/repo/ bookworm main non-free
  Active apt repos in: /etc/apt/sources.list.d/nordvpn.list
    1: deb https://repo.nordvpn.com/deb/nordvpn/debian stable main
  Active apt repos in: /etc/apt/sources.list.d/plex-mx.list
    1: deb https://downloads.plex.tv/repo/deb public main
  No active apt repos in: /etc/apt/sources.list.d/plexmediaserver.list
  Active apt repos in: /etc/apt/sources.list.d/sonarr.list
    1: deb [signed-by=/usr/share/keyrings/sonarr.gpg] https://apt.sonarr.tv/debian buster main
Info:
  Processes: 296 Uptime: 3h 26m wakeups: 6 Memory: 7.43 GiB used: 4.19 GiB (56.4%) Init: systemd
  v: 252 target: graphical (5) default: graphical tool: systemctl Compilers: gcc: 12
  Client: shell wrapper v: 5.2.15-release inxi: 3.3.26
Boot Mode: UEFI

My problem in addition to what you mention is that I cannot browse to my media folders from the Plex UI in order to add media files to a Plex Library. I have to make the user plex have access to that folder, but I don't know how to do it.