multiple monitors on xorg ============================= Was recently discussed over on https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1763892
Another user + myself have the following issue: The slowest connected display limits the FPS. The test case we used is over at the top of the other bug report ^^ This we found today happens with either amd vega graphics, or nvidia pascal graphics, the vendor doesn't seem to matter. We have both seen the same issue (xorg). This is on 18.10, and booting into the 'Gnome (xorg)' login option. With the FPS being logged by journalctl -f. With only single monitor attached. Then it initially goes as high as the primary monitor can show. (And glmark2 running in background, to maintain a continued load). Which is 120fps for my case. Then as soon as secondary monitor is plugged in, which is a 60hz TV. This is being plugged into the HDMI port of the same graphics card in real time. Then the FPS logged by 'journalctl -f' drops, and becomes capped to 60hz, in the output being printed by journalctl -f. My setup: kernel 5.0.0-050000-lowlatency #201903032031 NVIDIA Driver for UNIX platforms 415.27 (the closed source one) ubuntu 18.10 mutter version: mutter/cosmic-updates,now 3.30.2-1~ubuntu18.10.4 amd64 [installed] mutter-common/cosmic-updates,cosmic-updates,now 3.30.2-1~ubuntu18.10.4 all [installed] To confirm where the '.4' at the very end of the ~ubuntu18.10.4 version number, it seems to be that we have updated now on our client machines the be most recent bugfix updates, kindly provided by Daniel. Which closed the other bug https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1763892 being referred to, as being solved for people's single monitor scenarios. Thanks again for the other recent bug fixes in this area, it is a nice progress. Very helpful! We hope you can also look into this latest problem / issue for the multiple monitor scenario. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1730460 Title: Very poor multi-monitor performance in Wayland sessions Status in gnome-shell package in Ubuntu: In Progress Status in mutter package in Ubuntu: In Progress Bug description: Upstream bug: https://gitlab.gnome.org/GNOME/mutter/issues/3 --- When dragging a window between displays, I can see cpu usage increase while framerate drops dramatically to single numbers. Desktop scaling is 1.0, one is a WXGA screen and another FHD. Ubuntu session (wayland), 17.10. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.1-0ubuntu5 ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4 Uname: Linux 4.13.0-16-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 CurrentDesktop: Unity:Unity7:ubuntu Date: Mon Nov 6 17:09:20 2017 DisplayManager: lightdm GsettingsChanges: b'org.gnome.shell' b'favorite-apps' b"['/home/development/bin/firefox.desktop', 'org.gnome.Nautilus.desktop', 'jetbrains-phpstorm.desktop', 'code.desktop', 'postman.desktop', 'standard_notes.desktop']" b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" b'org.gnome.desktop.interface' b'icon-theme' b"'ePapirus'" b'org.gnome.desktop.interface' b'gtk-theme' b"'DarkNumix'" InstallationDate: Installed on 2016-03-13 (603 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307) SourcePackage: gnome-shell UpgradeStatus: Upgraded to artful on 2017-10-19 (17 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1730460/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
