I've also been having this problem since 16.04. Dell XPS 13" 2015, model L321X. The issue persists in Ubuntu 18.04 LTS, as well as Ubuntu Mint 18.04 LTS. Dell's support page indicates that this issue existed in 14.04, but disappeared in 15.04. This may be a regression.
https://www.dell.com/community/Linux-General/UPDATE-Ubuntu-14-04 -Touchpad-Freezing-Fix-XPS-13-2015/td-p/4587485 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1576844 Title: Touchpad/Trackpad freezes then eventually unfreezes (repeatedly) Status in xorg package in Ubuntu: Confirmed Bug description: $ lsb_release -rd Description: Ubuntu 16.04 LTS Release: 16.04 Several times yesterday and today (April 28-29, 2016) the touchpad (trackpad) on the Dell XPS 13 9343 has frozen. Other functions (keyboard, screen, etc.) have been fine but the pointer has been frozen in place. Then after 1-3 minutes functionality returns. Thank you very much for your assistance and I'd be happy to provide more information. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-22.38-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 NonfreeKernelModules: wl .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 BootLog: CompizPlugins: [core,composite,opengl,cube,rotate] CompositorRunning: None CurrentDesktop: GNOME-Flashback:Unity Date: Fri Apr 29 16:09:32 2016 DistUpgraded: 2016-04-27 15:53:13,798 DEBUG icon theme changed, re-reading DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: bcmwl, 6.30.223.248+bdcom, 4.2.0-36-generic, x86_64: installed bcmwl, 6.30.223.248+bdcom, 4.4.0-22-generic, x86_64: installed ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Broadwell-U Integrated Graphics [1028:0665] InstallationDate: Installed on 2015-08-06 (267 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: Dell Inc. XPS 13 9343 ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to xenial on 2016-04-27 (2 days ago) dmi.bios.date: 07/14/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 0TM99H dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA05:bd07/14/2015:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn0TM99H:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 13 9343 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Wed Apr 27 15:54:22 2016 xserver.configfile: default xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 5152 vendor SHP xserver.version: 2:1.18.3-1ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1576844/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

