I have a thinkpad T480 with LMDE and up until about two months ago it would work with this Samsung commercial display TV, although it never played audio from the TV like it was supposed to.

Now when I plug in the HDMI cable the screen turns black (not blue, which is when there’s no signal). If I go into display it shows that the TV is connected.

I know that this isn’t a hardware issue because I’ve used the same HDMI cable and laptop on a different TV and it worked fine. xrandr also says that HDMI-2 is connected.

Help

  • ulterno@programming.devEnglish
    0·
    8 minutes ago
    1. Any recent software updates that you might find relevant?
    • It would be good to know which distro you use
    • “Samsung commercial” would make me believe it doesn’t get automatic updates, but just in case, that is also a factor.
    1. Does the TV work with other input sources on the same port?
    2. Reading “Samsung”, I would assume it has multiple input ports. What was the result with other ports.
  • eldaviEnglish
    3·
    10 hours ago

    does dmesg or journalctl -f give any hints as to whats going on as you connect the cable?