Yes, I've been working on installing Windows, and also speaking with Dell, whose support techs say a replacement touchpad should have been the exact same model as the original (except not with a hardware defect). I wanted to make sure they'd support the laptop, which came with Windows, as well as see what device Windows detects.
Interestingly, Windows 10 has basically the same issue as Linux! I sees a device called "I2C HID device" that has problems, and in that device's status are the messages "The device cannot start (Code 10)" and "A request for the HID descriptor failed." There's also a pointing device called "PS/2 compatible Mouse" that is ... definitely not a PS/2 mouse. So, I think Windows agrees with Linux and this might not be a kernel issue after all. No amount of Dell Windows driver updates or Windows updates resolves it, and a Dell tech spent a long time remote controlling and testing with me. It looks like Dell replaced a piece of bad touchpad hardware that had good firmware, with a piece of good touchpad hardware that had bad firmware. I'm getting a *second* replacement touchpad in about a week. I can update this bug after the new one is installed and confirmed working, and I reinstall Linux. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1923515 Title: [Dell XPS 15 9500] New touchpad detected as "PS/2 Logitech Wheel Mouse" Status in linux package in Ubuntu: Incomplete Bug description: I've been using Ubuntu 20.04 on a Dell XPS 15 9550. The laptop's touchpad had a hardware defect common to the model (nicknamed "wobble") so Dell sent a tech to replace it. The new touchpad looks identical to the original but the kernel doesn't correctly detect it. The device does work, but appears to the kernel as a "PS/2 Logitech Wheel Mouse," which prevents the use of features like two-finger scrolling, disabling tap to click, and palm detection. A good summary of my troubleshooting steps are here: https://askubuntu.com/questions/1330555/touchpad-detected-as-ps-2-logitech-wheel-mouse-dell-xps-15-ubuntu-20-04 Importantly, I've tried a mainline kernel downloaded from Ubuntu (5.11.12 and a 5.12.0 release candidate, whereas the current version is a 5.8.0). I've also tried two bootable USB drives containing Ubuntu 20.04 and 21.04 (release candidate). Nothing has changed the device detection or behavior. The issue is identical in the default Ubuntu desktop and in Plasma. There are no touchpad settings in the UEFI BIOS. Per the touchpad detection instructions, I've attached the output of /proc/bus/input/devices, Xorg.0.log, and the `xinput --list` command. My suspicion is that Dell has ordered a brand new touchpad model for which there is no kernel driver; looking at the logs, the previous model was an elantech, but I'm not sure if the new one is as well. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: edholden 1571 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: KDE DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-10-11 (183 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) MachineType: Dell Inc. XPS 15 9500 NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-48-generic root=UUID=a8be5c03-8499-4474-932d-725877e9cc6c ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.8.0-48.54~20.04.1-generic 5.8.18 RelatedPackageVersions: linux-restricted-modules-5.8.0-48-generic N/A linux-backports-modules-5.8.0-48-generic N/A linux-firmware 1.187.10 Tags: focal Uname: Linux 5.8.0-48-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/24/2020 dmi.bios.release: 1.6 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.6.1 dmi.board.name: 0RDX6T dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.6.1:bd12/24/2020:br1.6:svnDellInc.:pnXPS159500:pvr:rvnDellInc.:rn0RDX6T:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9500 dmi.product.sku: 097D dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1923515/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
