I have a very similar problem with the touchscreen not working (most of the time) on my DELL Latitude 7400 2-in-1, except that when it does not work, it does not even work on the login screen. Closing the lid or restarting does not help. Then, from time to time, the screen works again...
My touchpad is also recognised as both mouse and touchpad, but that does not prevent it from working properly. The problem is solely with the touchscreen, which is simply unreactive (most of the time) although it does properly appear in xinput: Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ DELL08AF:00 044E:1225 Mouse id=13 [slave pointer (2)] ⎜ ↳ DELL08AF:00 044E:1225 Touchpad id=14 [slave pointer (2)] ⎜ ↳ PS/2 Generic Mouse id=20 [slave pointer (2)] ⎜ ↳ Wacom HID 48CA Finger touch id=12 [slave pointer (2)] ⎜ ↳ Wacom HID 48CA Pen stylus id=11 [slave pointer (2)] ⎜ ↳ Wacom HID 48CA Pen eraser id=21 [slave pointer (2)] -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/1876991 Title: Touchpad started appearing both as a touchpad and as a mouse input devices after upgrade to 20.04 Status in xserver-xorg-input-synaptics package in Ubuntu: Confirmed Bug description: It was working perfectly on 18.04 with 5.3 kernel but after upgrade to 20.04 it's becoming disabled because there is a "mouse" attached which is the same touchpad detected incorrectly, xinput --list showing both ⎜ ↳ MSFT0001:00 06CB:7E7E Mouse id=11 [slave pointer (2)] ⎜ ↳ MSFT0001:00 06CB:7E7E Touchpad id=12 [slave pointer (2)] The first line was definitely not present before, I know it because I use it when in openbox session. There is also a number of questions on AskUbuntu that look like results of the same problem at first glance: https://askubuntu.com/q/1231873/20275 https://askubuntu.com/q/1235067/20275 https://askubuntu.com/q/1234975/20275 and two global search results for the same touchpad model ("MSFT0001:00 06CB:7E7E Mouse") that show the same problem in unrelated contexts: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953405 https://bbs.archlinux.org/viewtopic.php?id=240723 I also have these errors in kernel log, may be related, weren't present previously: psmouse serio1: Failed to deactivate mouse on isa0060/serio1: -5 psmouse serio1: Failed to enable mouse on isa0060/serio1 psmouse serio1: Failed to disable mouse on isa0060/serio1 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xserver-xorg-input-synaptics 1.9.1-1ubuntu3 ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30 Uname: Linux 5.4.0-29-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Wed May 6 00:09:45 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 27c6:5301 Shenzhen Goodix Technology Co.,Ltd. Fingerprint Reader Bus 001 Device 002: ID 1bcf:28c1 Sunplus Innovation Technology Inc. Integrated_Webcam_HD Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Vostro 5471 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-29-generic root=/dev/mapper/ocz-root ro quiet libata.force=1.00:noncq resume=/dev/mapper/ocz-swap_1 crashkernel=384M-2G:128M,2G-:256M SourcePackage: xserver-xorg-input-synaptics UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/25/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.9.0 dmi.board.name: 05F5VX dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.asset.tag: Zahoriya dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.9.0:bd07/25/2018:svnDellInc.:pnVostro5471:pvr:rvnDellInc.:rn05F5VX:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Vostro dmi.product.name: Vostro 5471 dmi.product.sku: 0830 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.101-2 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-2ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.6-1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/1876991/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
