I also encounter the same problem. >From my point of view it seems that when I press the touch screen it generates >two simple clicks. That's why when I click the "Show application" it opens and >immediately close the application list. Moreover when I click on another >application shortcut it opens the application twice.
Under ubuntu 17 I had this bug only with xorg not xwayland. Since I upgraded to 18.04 I encounter the problem in both xorg and xwayland. When I check the events generated when I quickly press the screen libinput-debug-events returns only: "TOUCH_DOWN, TOUCH_FRAME, TOUCH_UP, TOUCH_FRAME" events which seems to be normal. Thus I guess that the bug might comes from the Gnome framework. My laptop is a 2-in-1 ASUS T304UA. -- 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/1765356 Title: "Show Applications" button triggers too often on touchscreen Status in gnome-shell package in Ubuntu: New Bug description: Given I am logged in on the Ubuntu default desktop (running GNOME Shell 3.28.1) when I press the "Show Applications" button at the lower end of the task bar then only the tooltip appears and when I press the "Show Applications" button again then the applications (of the "Frequent" category) are shown and immediately hidden again. Extended scenario: When the above described has been done a few times then pressing the "Show Applications" button _only once_ makes the applications show _and_ hide immediately (in a single action) and I have to use the mouse to make the applications display. Current Behavior ---------------- It looks like touch screen events for that area are somewhat "recorded" and then executed all at once. Expected Behavior ----------------- The applications should be shown immediately upon a single touch press on the "Show Applications" button, and hidden again the same way. In other words, the behavior should be consistent with pressing the button using the mouse (or touch pad). Additional Information ---------------------- I could reproduce this issue on both a Dell Inspiron 13 5000 Series 2-in-1 (convertible with touch screen) and a Lenovo X1 Carbon 6th Generation (2018). ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-shell 3.28.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15 Uname: Linux 4.15.0-15-generic x86_64 ApportVersion: 2.20.9-0ubuntu5 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Apr 19 11:18:53 2018 DisplayManager: gdm3 GsettingsChanges: b'org.gnome.shell' b'enabled-extensions' b"['move_cl...@rmy.pobox.com', 'system-moni...@paradoxxx.zero.gmail.com', 'pixel-sa...@deadalnix.me', 'hide_activit...@shay.shayel.org', 'docker_status@gpouilloux', 'add-username-toppa...@brendaw.com', 'logoutbut...@kyle.aims.ac.za', 'OverviewAllWindows@amiller27', 'launch-and-exp...@xenatt.github.com', 'all-wind...@ezix.org']" b'org.gnome.shell' b'enable-hot-corners' b'true' b'org.gnome.shell' b'favorite-apps' redacted by apport b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" b'org.gnome.desktop.interface' b'show-battery-percentage' b'true' InstallationDate: Installed on 2018-04-06 (13 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180403) SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1765356/+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
