Monitor not working after update

Hi!
My monitor doesn’t show anything through DP-1 after (I think) an update.
I use a TV (HDMI-2) and a monitor (DP-1) … sometimes one, sometimes the other, sometimes both at the same time.
I have looked many posts and I’m going to add the information I’ve seen that it’s important.

xrandr returns

Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm
   3840x2160     30.00*+  25.00    24.00    29.97    23.98  
   4096x2160     30.00    25.00    24.00    29.97    23.98  
   1920x1080    120.00   100.00   119.88    60.00    50.00    59.94    30.00    25.00    24.00    29.97    23.98  
   1920x1080i    60.00    50.00    59.94  
   1280x1024     60.02  
   1360x768      60.02  
   1280x720      60.00    50.00    59.94  
   1024x768      60.00  
   800x600       60.32  
   720x576       50.00  
   720x576i      50.00  
   720x480       60.00    59.94  
   640x480       60.00    59.94  
   720x400       70.08

kscreen-console returns

START: Requesting Config
Received config. Took 4 milliseconds
Screen:
        maxSize: QSize(16384, 16384)
        minSize: QSize(320, 200)
        currentSize: QSize(3840, 2160)

-----------------------------------------------------

Id:  65
Name:  "DP-1"
Type:  "DisplayPort"
Connected:  false

-----------------------------------------------------

Id:  66
Name:  "HDMI-1"
Type:  "HDMI"
Connected:  false

-----------------------------------------------------

Id:  67
Name:  "HDMI-2"
Type:  "HDMI"
Connected:  true
Enabled:  true
Priority:  1
Rotation:  KScreen::Output::None
Pos:  QPoint(0,0)
MMSize:  QSize(1600, 900)
FollowPreferredMode:  false
Size:  QSize(3840, 2160)
Scale:  1
Clones:  None
Mode:  "69"
Preferred Mode:  "69"
Preferred modes:  QList("69")
Modes: 
         "1249"    ""   QSize(4096, 2160)   30
         "1250"    ""   QSize(4096, 2160)   25
         "1251"    ""   QSize(4096, 2160)   24
         "1252"    ""   QSize(4096, 2160)   29.97
         "1253"    ""   QSize(4096, 2160)   23.976
         "1254"    ""   QSize(1920, 1080)   120
         "1255"    ""   QSize(1920, 1080)   100
         "1256"    ""   QSize(1920, 1080)   119.88
         "1257"    ""   QSize(1920, 1080)   50
         "1258"    ""   QSize(1920, 1080)   50
         "1259"    ""   QSize(1920, 1080)   25
         "1260"    ""   QSize(1920, 1080)   24
         "1261"    ""   QSize(1920, 1080)   23.9761
         "1262"    ""   QSize(1360, 768)   60.0152
         "1263"    ""   QSize(1280, 720)   50
         "1264"    ""   QSize(720, 576)   50
         "1265"    ""   QSize(720, 576)   50
         "1266"    ""   QSize(720, 400)   70.0817
         "69"    ""   QSize(3840, 2160)   30
         "70"    ""   QSize(3840, 2160)   25
         "71"    ""   QSize(3840, 2160)   24
         "72"    ""   QSize(3840, 2160)   29.97
         "73"    ""   QSize(3840, 2160)   23.976
         "75"    ""   QSize(1920, 1080)   60
         "76"    ""   QSize(1920, 1080)   59.9402
         "77"    ""   QSize(1920, 1080)   60
         "78"    ""   QSize(1920, 1080)   30
         "79"    ""   QSize(1920, 1080)   59.9402
         "80"    ""   QSize(1920, 1080)   29.9701
         "82"    ""   QSize(1280, 1024)   60.0197
         "84"    ""   QSize(1280, 720)   60
         "85"    ""   QSize(1280, 720)   59.9402
         "86"    ""   QSize(1024, 768)   60.0038
         "87"    ""   QSize(800, 600)   60.3165
         "88"    ""   QSize(720, 480)   60
         "89"    ""   QSize(720, 480)   59.9401
         "90"    ""   QSize(640, 480)   60
         "91"    ""   QSize(640, 480)   59.9405
EDID Info: 
        Device ID:  "xrandr-LG Electronics-LG TV SSCR2-16843009"
        Name:  "LG TV SSCR2"
        Vendor:  "LG Electronics"
        Serial:  "16843009"
        EISA ID:  ""
        Hash:  "9e8371f7ae3d1fbe9aed228324fb1859"
        Width:  160
        Height:  90
        Gamma:  2.2
        Red:  QQuaternion(scalar:1, vector:(0.639648, 0.328125, 0))
        Green:  QQuaternion(scalar:1, vector:(0.299805, 0.599609, 0))
        Blue:  QQuaternion(scalar:1, vector:(0.150391, 0.0595703, 0))
        White:  QQuaternion(scalar:1, vector:(0.3125, 0.329102, 0))

inxi -Faz returns …

System:
  Kernel: 6.1.131-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
    clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.1-x86_64
    root=UUID=683125e2-1176-4786-a706-ca0a8836841d rw quiet
    resume=UUID=5e31802a-970e-4d5e-83d7-114511d2b96c apparmor=1
    security=apparmor udev.log_priority=3
  Desktop: KDE Plasma v: 6.3.3 tk: Qt v: N/A info: frameworks v: 6.12.0
    wm: kwin_x11 vt: 2 dm: SDDM Distro: Manjaro base: Arch Linux
Machine:
  Type: Desktop Mobo: ASUSTeK model: ROG STRIX Z390-E GAMING v: Rev 1.xx
    serial: <superuser requiredpart-nu: ASUS_MB_CNL uuid: <superuser required>
    UEFI: American Megatrends v: 1302 date: 09/02/2019
CPU:
  Info: model: Intel Core i9-9900 bits: 64 type: MT MCP arch: Coffee Lake
    gen: core 9 level: v3 note: check built: 2018 process: Intel 14nm family: 6
    model-id: 0x9E (158) stepping: 0xD (13) microcode: 0x102
  Topology: cpus: 1x dies: 1 clusters: 8 cores: 8 threads: 16 tpc: 2
    smt: enabled cache: L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 2 MiB
    desc: 8x256 KiB L3: 16 MiB desc: 1x16 MiB
  Speed (MHz): avg: 800 min/max: 800/5000 scaling: driver: intel_pstate
    governor: powersave cores: 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 7: 800
    8: 800 9: 800 10: 800 11: 800 12: 800 13: 800 14: 800 15: 800 16: 800
    bogomips: 99237
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3
  Vulnerabilities:
  Type: gather_data_sampling mitigation: Microcode
  Type: itlb_multihit status: KVM: VMX unsupported
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT vulnerable
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: Enhanced 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: Enhanced / Automatic IBRS; IBPB:
    conditional; RSB filling; PBRSB-eIBRS: SW sequence; BHI: SW loop, KVM: SW
    loop
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort mitigation: TSX disabled
Graphics:
  Device-1: Intel CoffeeLake-S GT2 [UHD Graphics 630] vendor: ASUSTeK
    driver: i915 v: kernel arch: Gen-9.5 process: Intel 14nm built: 2016-20
    ports: active: HDMI-A-2 empty: DP-1,HDMI-A-1 bus-ID: 00:02.0
    chip-ID: 8086:3e98 class-ID: 0300
  Display: x11 server: X.Org v: 21.1.16 with: Xwayland v: 24.1.6
    compositor: kwin_x11 driver: X: loaded: modesetting alternate: fbdev,vesa
    dri: iris gpu: i915 display-ID: :0 screens: 1
  Screen-1: 0 s-res: 3840x2160 s-dpi: 96 s-size: 1015x571mm (39.96x22.48")
    s-diag: 1165mm (45.85")
  Monitor-1: HDMI-A-2 mapped: HDMI-2 model: LG (GoldStar) TV SSCR2
    serial: <filterbuilt: 2024 res: mode: 3840x2160 hz: 30 scale: 100% (1)
    dpi: 61 gamma: 1.2 size: 1600x900mm (62.99x35.43") diag: 1836mm (72.3")
    ratio: 16:9 modes: max: 3840x2160 min: 720x400
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast gbm: drv: iris surfaceless: drv: iris x11: drv: iris
    inactive: wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 25.0.1-arch1.2
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel UHD Graphics 630 (CFL
    GT2) device-ID: 8086:3e98 memory: 15.23 GiB unified: yes
  API: Vulkan v: 1.4.304 layers: N/A device: 0 type: integrated-gpu
    name: Intel UHD Graphics 630 (CFL GT2) driver: N/A device-ID: 8086:3e98
    surfaces: xcb,xlib
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor wl: wayland-info
    x11: xdpyinfo, xprop, xrandr
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: ASUSTeK driver: snd_hda_intel
    v: kernel alternate: snd_soc_skl,snd_sof_pci_intel_cnl bus-ID: 00:1f.3
    chip-ID: 8086:a348 class-ID: 0403
  API: ALSA v: k6.1.131-1-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: 1.4.1 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: Intel Cannon Lake PCH CNVi WiFi driver: iwlwifi v: kernel
    bus-ID: 00:14.3 chip-ID: 8086:a370 class-ID: 0280
  IF: wlo1 state: up mac: <filter>
  Device-2: Intel Ethernet I219-V vendor: ASUSTeK driver: e1000e v: kernel
    port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15bc class-ID: 0200
  IF: eno2 state: down mac: <filter>
  IF-ID-1: surfshark_ipv6 state: unknown speed: N/A duplex: N/A
    mac: <filter>
  IF-ID-2: surfshark_wg state: unknown speed: N/A duplex: N/A mac: N/A
  Info: services: mld, NetworkManager, systemd-timesyncd, wpa_supplicant
Bluetooth:
  Device-1: Intel Bluetooth 9460/9560 Jefferson Peak (JfP) driver: btusb
    v: 0.8 type: USB rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-14:3
    chip-ID: 8087:0aaa class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends
Drives:
  Local Storage: total: 32.4 TiB used: 26.76 TiB (82.6%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung
    model: SSD 970 EVO Plus 500GB size: 465.76 GiB block-size: physical: 512 B
    logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: 2B2QEXM7 temp: 38.9 C scheme: GPT
  ID-2: /dev/nvme1n1 maj-min: 259:6 vendor: Kingston model: SNV3S1000G
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
    lanes: 4 tech: SSD serial: <filterfw-rev: ERFK1N.3 temp: 30.9 C
    scheme: GPT
  ID-3: /dev/sda maj-min: 8:0 vendor: Samsung model: SSD 860 QVO 4TB
    size: 3.64 TiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filterfw-rev: 1B6Q scheme: GPT
  ID-4: /dev/sdb maj-min: 8:16 vendor: Western Digital
    model: WUH721414ALE6L4 size: 12.73 TiB block-size: physical: 4096 B
    logical: 512 B speed: 6.0 Gb/s tech: HDD rpm: 7200 serial: <filter>
    fw-rev: W07G scheme: GPT
  ID-5: /dev/sdc maj-min: 8:32 vendor: Seagate model: ST12000DM0007-2GR116
    size: 10.91 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: HDD rpm: 7200 serial: <filterfw-rev: DN01 scheme: GPT
  ID-6: /dev/sdd maj-min: 8:48 vendor: Hitachi model: HDS5C4040ALE630
    size: 3.64 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: HDD rpm: 5700 serial: <filterfw-rev: A250 scheme: GPT
  ID-7: /dev/sde maj-min: 8:64 vendor: Kingston model: DataTraveler 3.0
    size: 115.59 GiB block-size: physical: 512 B logical: 512 B type: USB
    rev: 3.2 spd: 5 Gb/s lanes: 1 mode: 3.2 gen-1x1 tech: N/A serial: <filter>
    fw-rev: PMAP scheme: MBR
  SMART Message: Unknown USB bridge. Flash drive/Unsupported enclosure?
Partition:
  ID-1: / raw-size: 128 GiB size: 125.43 GiB (97.99%) used: 73.03 GiB (58.2%)
    fs: ext4 dev: /dev/nvme0n1p3 maj-min: 259:3
  ID-2: /boot/efi raw-size: 640 MiB size: 638.7 MiB (99.80%)
    used: 312 KiB (0.0%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 32 GiB used: 144.5 MiB (0.4%)
    priority: -2 dev: /dev/nvme0n1p2 maj-min: 259:2
Sensors:
  System Temperatures: cpu: 39.0 C mobo: N/A
  Fan Speeds (rpm): N/A
Info:
  Memory: total: 32 GiB available: 31.19 GiB used: 4.98 GiB (16.0%)
  Processes: 336 Power: uptime: 24m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 12.46 GiB services: org_kde_powerdevil,upowerd
    Init: systemd v: 257 default: graphical tool: systemctl
  Packages: pm: pacman pkgs: 1701 libs: 445 tools: pamac,yay Compilers:
    gcc: 14.2.1 Shell: Bash v: 5.2.37 running-in: konsole inxi: 3.3.37

xrandr --listmonitors returns …

Monitors: 1
 0: +*HDMI-2 3840/1600x2160/900+0+0  HDMI-2

kscreen-doctor output.DP-1.enable returns …

Enabling output 65

but it solves nothing, because it still shows “not connected”.

If I connect the monitor using the HDMI cable works OK.
If I connect the monitor using the DPI with other computer works OK.
So the monitor and the cables are OK.

Any idea?
Thanks in advance!

:bangbang: Tip :bangbang:

When posting terminal output, copy the output and paste it here, wrapped in three (3) backticks, before AND after the pasted text. Like this:

```
pasted text
```

Or three (3) tilde signs, like this:

~~~
pasted text
~~~

This will just cause it to be rendered like this:

Sed
sollicitudin dolor
eget nisl elit id
condimentum
arcu erat varius
cursus sem quis eros.

Instead of like this:

Sed sollicitudin dolor eget nisl elit id condimentum arcu erat varius cursus sem quis eros.

Alternatively, paste the text you wish to format as terminal output, select all pasted text, and click the </> button on the taskbar. This will indent the whole pasted section with one TAB, causing it to render the same way as described above.

Thereby increasing legibility thus making it easier for those trying to provide assistance.

For more information, please see:

As I’m a moderator on the forum, I have taken the liberty of doing this for you, this time.


:bangbang::bangbang: Additionally

If your language isn’t English, please prepend any and all terminal commands with LC_ALL=C. For example:

LC_ALL=C bluetoothctl

This will just cause the terminal output to be in English, making it easier to understand and debug.

Note that the above text is partially pre-prepared as a general introduction for new forum Users. Please take the time to to understand how it is done and encourage quality responses.

Thanks a lot and I’m sorry!

1 Like

I’ve had this problem for a couple of weeks.
Right now, after the last update of the system it seems everything is solved.
I have no idea why.

Greetings!

1 Like