Second monitor suddenly not detected

Hi, I have a SuseLinux 42.3 installed on a Dell Laptop SInce yesterday my second monitor is not detected anymore. Do you have any idea how this can happen out of nothing ? I have installed no additional software, I’ve done no changes to my system …
I have to add that the monitor cable is ok and the monitor is working, I’ve tested it with another laptop.

 kscreen-console
START: Requesting Config
Received config. Took 38 milliseconds
Screen:
        maxSize: QSize(8192, 8192)
        minSize: QSize(320, 200)
        currentSize: QSize(1920, 1080)

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

Id:  130
Name:  "eDP-1"
Type:  "Panel (Laptop)"
Connected:  true
Enabled:  true
Primary:  true
Rotation:  1
Pos:  QPoint(0,0)
MMSize:  QSize(344, 194)
Size:  QSize(1920, 1080)
Clones:  None
Mode:  "136"
Preferred Mode:  "136"
Preferred modes:  ("136")
Modes: 
         "136"    ""   QSize(1920, 1080)   59.9997
         "137"    ""   QSize(1920, 1080)   47.9982
         "138"    ""   QSize(1400, 1050)   59.9756
         "139"    ""   QSize(1280, 1024)   60.0197
         "140"    ""   QSize(1280, 960)   60
         "141"    ""   QSize(1024, 768)   120.075
         "142"    ""   QSize(1024, 768)   60.0038
         "143"    ""   QSize(960, 720)   120
         "144"    ""   QSize(928, 696)   120.101
         "145"    ""   QSize(896, 672)   120.029
         "146"    ""   QSize(800, 600)   120
         "147"    ""   QSize(800, 600)   60.3165
         "148"    ""   QSize(800, 600)   56.25
         "149"    ""   QSize(700, 525)   119.951
         "150"    ""   QSize(640, 512)   120.039
         "151"    ""   QSize(640, 480)   120
         "152"    ""   QSize(640, 480)   59.9405
         "153"    ""   QSize(512, 384)   120.008
         "154"    ""   QSize(400, 300)   120.633
         "155"    ""   QSize(400, 300)   112.68
         "156"    ""   QSize(320, 240)   120.105
EDID Info: 
        Device ID:  "xrandr-unknown"
        Name:  ""
        Vendor:  ""
        Serial:  ""
        EISA ID:  "RMJCY�NV15N4"
        Hash:  "a542902d6c278d1701603365880bdcac"
        Width:  34
        Height:  19
        Gamma:  2
        Red:  QQuaternion(scalar:1, vector:(0.584961, 0.363281, 0))
        Green:  QQuaternion(scalar:1, vector:(0.349609, 0.579102, 0))
        Blue:  QQuaternion(scalar:1, vector:(0.162109, 0.142578, 0))
        White:  QQuaternion(scalar:1, vector:(0.3125, 0.328125, 0))

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

Id:  131
Name:  "DP-1"
Type:  "DisplayPort"
Connected:  false

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

Id:  132
Name:  "HDMI-1"
Type:  "HDMI"
Connected:  false

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

Id:  133
Name:  "DP-2"
Type:  "DisplayPort"
Connected:  false

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

Id:  134
Name:  "HDMI-2"
Type:  "HDMI"
Connected:  false

I can believe that there were no updates, etc. because 42.3 is already out of support for a long time.

As we both are pretty sure there was no change in software, like you, I can only assume hardware. You tested cable and monitor. I am not that good at hardware, but for me there are then things like connector and graphics card.

How would you test on a 15.2 if really the hardware is broken ? (When there is no Windoz in dual boot :slight_smile: ) I know is not good that I’m still with that old version of Suse but currently I cannot risk trying to upgrade …

Hi
Boot up a live release of 15.1 or Tumbleweed from a USB device;

https://software.opensuse.org/
https://en.opensuse.org/SDB:Live_USB_stick

Can the installation DVD also be used as a live DVD ? Will tthe live release boot recognize my second monitor in normal case ?

Hi
AFAIK the installation DVD can’t be run as a live, it can run rescue mode, but that only give command line. It should however if two monitors connected run them both at the same time. Try it (rescue mode) and see what happens. Else at grub on the system accept advance options and boot in failsafe mode.

Does the the Fn+F8 key combo disable/enable the external display? Boot the laptop with the external monitor attached. Share the laptop’s /var/log/Xorg.0.log. It’s lengthy so upload it to https://pastebin.com/ (or similar), and post the link to it here.