I upgraded to 3.20 and had some issues with the Nouveau drivers. Switched to proprietary Nvidia drivers and it worked much better. I'm using a DisplayPort3 however.
On Thu, 2 Jun 2016 at 12:20 Usama Akkad <uahe...@gmail.com> wrote: > Hello Thomas, > > For me sometimes the screen connected to HDMI is not recognized till I > remove the cable and reinsert it after boot. Then I might need to press > the key to activate external screen on my laptop. > > try "xrandr" command to get info about the recognized screens. > > Best wishes, > Usama > > On 02-06-2016 18:16, Thomas SIMON wrote: > > Hello all, > > > > I'm not sure if this is the right mailing list or if I should ask for > > help somewhere else (I'm not sure it's a bug so far...). Basically, the > > problem is simple, after upgrade of Ubuntu GNOME 16.04 with staging PPA, > > my external screen was working (plugged in with HDMI), even after the > > first restart. I went away and then switched off entirely my laptop, > > when I came back, no way to get the external screen recognised by the > > system (doesn't show on "Display" of system settings and doesn't show > > with randr command). > > > > Then, well, I used ppa-purge, but that didn't change anything and tried > > to plug in the screen with a VGA cable (and USB adaptor) and that still > > wasn't recognised. Finally, I tested the screen with another laptop > > (running Win 10) and that got the screen to work, so I'm pretty sure > > it's an issue related to the upgrade to Gnome 3.20. > > > > Would anybody be able to advise please? > > > > Thanks a lot in advance, > > > > Thomas > > > > -- > Ubuntu-GNOME mailing list > Ubuntu-GNOME@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-gnome >
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