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Thanks bitsnpcs for confirming this - always good when these type of significant issues are confirmed by others.Like you, all our four laptops have plug-n-played with Windows OS, but not with Ubuntu and Ubuntu-based distros: I've tried several 16.04 distros (e.g. LL, Mint, Zorin, Watt, Lubuntu, Xubuntu, etc) and none showed plug-n-play for sound & video (including autosizing & optimal screen resolution) for TV programmes played from our laptops through our Samsung TV display (using HDMI cable), for all the four laptops listed in signature below. This is in contrast to Manjaro-xfce and PCLinuxOS-xfce: these instantly plug-n-play without any issues whatsoever.Clearly, it would be great if the LL developers could look at this issue ... it would be wonderful if LL was to lead the way for the Ubuntu-based distros for plug-n-play between laptops & external monitors CheersMike
There was a time in Windows when 'plug and play' was more like 'plug and pray'.
I tried today Lenovo T420s 16GB 240SSD, displayport>HDMI Samsung tv.Confirmed this set up works using windows before begin.No useful success using Linux to improve/help you solve issue.results on tv -Linux Lite 3.2 dvd liveDesktop part appeared on tv, sound worked.Desktop it was wrong size and didnt show the panel or a portion of lower desktop , on tv.Changing of resolution didn't help, only made worse in smaller sizes on tv.Eventually I got entire wallpaper to appear on laptop and tv, but neither had a panel so had to switch off laptop to get to remove dvd.End of trial.Ubuntu 17.10 usb liveeven less of desktop appeared in height, and also this was missing part of desktop in width on tv.Looked at display settings, all of those tried had no visible effect at all.Didn't try much else with it with tv.
My previous message in that thread still stands:Quote from: Jerry on March 20, 2017, 03:43:52 AMThey use MATE and KDE so either that's the difference, or they are using newer or patched packages, or newer kernel. You'd have to ask them how they achieve this.
They use MATE and KDE so either that's the difference, or they are using newer or patched packages, or newer kernel. You'd have to ask them how they achieve this.
@m654321 I couldn't really reproduce your problem. I first tried using a friend's quite new laptop running Ubuntu 16.04. We plugged in the HDMI cable and the display came up - albeit as an extension to the laptop display rather than as a mirror of it. Clicking a checkbox on the info box that appeared solved that and I got the impression that that could become a default setting.I've now tried it with Linux Lite on my 2006 Philips Freevents laptop and again the display came up right away, using a VGA cable. This time it would not accept mirroring at all because of a difference in the size of displays, so I suppose that would have required some fiddling about - possibly unsuccessfully too, but that looks more like a hardware issue to me given that the laptop is 11 years old. It would still display immediately on the external monitor though if you accepted it as an extension display or alternative display (ie laptop screen blanked). This seems OK to me., really. Are you used to seeing something better than that with the other distros?
Quote@bitsnpcs: What do you mean by plug n play ?"Plug and Play", sometimes abbreviated as PnP, is a catchy phrase used to describe devices that work with a computer system as soon as they are connected, i.e. which instantly work without the need to (1) download additional drivers and/or (2) fiddle around with PC settings. It's commonly used for devices that work out-of-the-box with Windows computers.
@bitsnpcs: What do you mean by plug n play ?
In September 2017, I posted a question asking if instant plug-n-play capability for external monitors could be developed in LL (see https://www.linuxliteos.com/forums/suggestions-and-feedback/pclos-instant-plug-and-playexternal-monitor!!!-can-we-have-this-with-ll/msg35043/#msg35043).My own experiments showed that Manjaro and PCLinuxOS could instantly plug-n-play with either our Samsung TV monitor or with two other displays (Dell & Hanns G). However, LL and all the Ubuntu-based distros that I've tried, did not instantly plug-n-play; instead you need to fiddle around with settings, e.g. which one is required as the primary display and whether mirror displays are required or not, etc, which is time consuming and a bit complicated.Jerry suggested that the issue might be kernel related as, at the time, Manjaro & PCLinuxOS were using kernel 4.6, while LL still had 4.4. To test this idea, I did the following two things:(1) Upgraded kernel from 4.4 to 4.6 then 4.9 for LL: still no plug-n-play with external monitor(2) Downgraded kernel from 4.9 or 4.6 to 4.4 with Manjaro & PCLinuxOS: plug-n-play capability maintainedTherefore, I concluded that the lack of instant-plug-n-play capability of LL (or other Ubuntu-based distros) with external displays was not due to the kernel.My question therefore, thinking about LL's future, is as follows ...Would it be possible to develop external display plug-n-play capability in LL, even though this feature appears to be absent in its Ubuntu 'parent' ? Such a feature would be really useful. Many thanks for any feedback.