I installed Lubuntu 22.04 LTS several days ago. I would like to share my PC screen now via an HDMI cable to my TV. When booting up with the HDMI cable plugged in, the TV does show some of the screens on the PC when booting up and the TV also shows the Sign In Screen that has the Lubuntu Insignia with the slot for the password for the sole user (me). But as soon as I sign in the screen sharing effectively stops: I get a blue screen with some clouds, but no desktop icons or touchpad cursor.
When I unplug the HDMI cable, I the TV screen goes blank and says "no signal" and the taskbar appears at the bottom of the PC screen and the PC desktop icons rearrange too. Plugging the HDMI cable back in reverses the effects: blue sky screen with clouds on the TV, but no real screen sharing to the TV and loss of taskbar and rearrangement of icons on the PC screen.
I figure the solution to the problem must have something to do with the Lubuntu PC Monitor Settings. So I have tried to change the monitor settings with the HDMI cable plugged in. When I do this, the PC is sensing the TV, because it is giving me the TV Make and Model and the correct HDMI port on the TV. But I have been unable to really get screen sharing by fiddling with the Monitor settings/preferences.
I am thinking that the blue sky with clouds I am getting on the TV is some kind of generic screen. Because even though the blue sky with some clouds is similar to the Lubuntu screen, I don't think I am getting screen sharing for just part of my PC screen, because when the PC screen is "full" of another screen there is no change to the TV screen. And there is no audio coming through the TV when there is audio on PC via youtube.
Does anybody have any idea what is wrong or what I should do?
Thanks,
A.
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