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Issues with HDMI output
(slrpnk.net)
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this post was submitted on 19 Nov 2024
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I mentioned in my post that I use LMDE. There aren't any recent software updates that I recall specifically that did it. The TV does work with other people's laptops in the same port. There's two HDMI ports on the TV and they give the same results. The TV is a dumb TV.
Oops! I thought it was some obscure DE.
Considering your points, it seems to be most probably some configuration issue.
Might even be that some of the automated monitor/display configuration tools (might be some GUI settings thing) wonked out and reconfigured something.
If your system has some shortcut combination for selecting external monitor/connected projector/mirror screen, perhaps you can try that.
Also, since you mentioned
xrandr, I would assume X Session. You can also usexrandrto check and set the monitor configuration. Not just whether it is connected, but also location (left/right/up/down) and screen resolution of each display separately. Perhaps trying those could tell you what is happening.