Since this is the main thread on the Internet about this issue, I suppose it is appropriate to post here even though I am using Manjaro.
- This issue is non-present on a Thinkpad 3 14ADA05 with touchpad MSFT0001:00 06CB:CE2D on kernel 5.9.16-1 which uses i2c_hid. It is not elantech or designware (doesn't load the associated specific i2c drivers). Installing an entirely new keyboard panel with a new touchpad, essentially rebuilding the entire laptop does not address this issue. It is the same model touchpad for this specific laptop model even if you order a new one (unless I got bad luck of the draw). - The issue becomes present on kernel 5.10.23-1 (and previous versions of 5.10) up to 5.12rc3. Have not tried compiling 5.12rc5, but no reason to believe it would work. The touchpad will fail to be recognized and work on bootup between 1-30 reboots. I have tried many things such as different kernels and GRUB_CMDLINE_LINUX_DEFAULT options, yes even checking to set the kernel config option others are suggesting (Manjaro removed then reinstated the CONFIG_I2C_HID_ACPI=m option). I also tore apart kernels 5.9 and 5.10 to look at the pinctrl-amd.c driver and found that there was no difference between the two on these kernels, so it is something other than what https://launchpadlibrarian.net/500948605/0303-pinctrl-amd2.patch addresses since it works on the former kernel but not the latter. Also, the patch fails to apply on 5.12rc5. I don't really know how to compare the entire torn-apart kernels 5.9 and 5.10 to try and find what change(s) could possibly cause this bug. Hopefully someone else knows how to? Might be able to get somewhere if so... Other mods might be replacing the touchpad with a model not designed for the laptop, but I don't know where to start with that either. -- 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/1887190 Title: MSFT Touchpad not working on Lenovo Legion-5 15ARH05 Status in Pop!_OS: New Status in linux package in Ubuntu: Fix Released Status in xserver-xorg-input-libinput package in Ubuntu: Confirmed Status in linux package in Arch Linux: Fix Committed Status in linux package in Fedora: Confirmed Status in linux package in openSUSE: New Bug description: Update (based on #296) ============= The latest kernel tree (https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git) has the complete solution to fix this bug. So we can expect kernel v5.11 to fix this issue without any additional work. Before the release of v5.11, you are suggested to use #189 to save your touchpad. Note that for distributions like Ubuntu and Fedora, the pinctrl-amd driver is built into the initramfs. So you have to rebuild the initramfs after replacing the old module with new one. On Fedora, run `sudo dracut --force`; On ubuntu, run `sudo update-initramfs -u`. The complete solution is three patches, - 47a0001436352c9853d72bf2071e85b316d688a2 ("pinctrl: amd: remove debounce filter setting in IRQ type setting") - 06abe8291bc31839950f7d0362d9979edc88a666 ("pinctrl: amd: fix incorrect way to disable debounce filter") - 8dcb7a15a585b6d0fee15751ce11d7a68cfedd56 ("gpiolib: acpi: Take into account debounce settings") The first two patches has reached the stable tree. If the last one is also backported to LTS kernel, you won't need to install kernel 5.11. But I don't know when this will happen. Original bug report =================== Hello The MSFT touchpad of this Lenovo Legion-5 15ARH05 laptop is not reacting at all (pointer and click never move when touchpad is touched). This has been reported by other users in various websites, with various linux systems including other Ubuntu systems, but I saw no launchpad bug so I post one. Example of websites covering the issue : - https://askubuntu.com/questions/1253830/lenovo-legion-5-touchpad (exactly the same laptop) - https://www.linux.org/threads/lenovo-legion-5-touchpad.29536/ (similar laptop) xinput indentifies it as MSFT0001:00 04F3:3140 Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ MSFT0001:00 04F3:3140 Touchpad id=17 [slave pointer (2)] ⎜ ↳ MSFT0001:00 04F3:3140 Mouse id=16 [slave pointer (2)] ⎜ ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control id=12 [slave pointer (2)] ⎜ ↳ Logitech USB Optical Mouse id=11 [slave pointer (2)] ⎣ Virtual core keyboard id=3 [master keyboard (2)] ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)] ↳ Ideapad extra buttons id=15 [slave keyboard (3)] ↳ Power Button id=6 [slave keyboard (3)] ↳ Integrated Camera: Integrated C id=10 [slave keyboard (3)] ↳ Video Bus id=7 [slave keyboard (3)] ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control id=19 [slave keyboard (3)] ↳ Power Button id=9 [slave keyboard (3)] ↳ ITE Tech. Inc. ITE Device(8910) Wireless Radio Control id=13 [slave keyboard (3)] ↳ ITE Tech. Inc. ITE Device(8910) Keyboard id=14 [slave keyboard (3)] ↳ AT Translated Set 2 keyboard id=18 [slave keyboard (3)] ↳ Video Bus id=8 [slave keyboard (3)] Thanks a lot for your time. It does not help, but I can confirm what was reported on askubuntu by another user : the touchpad does work on Windows. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-40-generic 5.4.0-40.44 ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 Uname: Linux 5.4.0-40-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: nicolas 1567 F.... pulseaudio /dev/snd/controlC1: nicolas 1567 F.... pulseaudio /dev/snd/controlC2: nicolas 1567 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Jul 10 20:14:25 2020 InstallationDate: Installed on 2020-07-02 (8 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: LENOVO 82B5 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-40-generic root=UUID=d8898017-2821-434e-ab52-fec76ac93106 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-40-generic N/A linux-backports-modules-5.4.0-40-generic N/A linux-firmware 1.187.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/12/2020 dmi.bios.vendor: LENOVO dmi.bios.version: EUCN19WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Legion 5 15ARH05 dmi.modalias: dmi:bvnLENOVO:bvrEUCN19WW:bd05/12/2020:svnLENOVO:pn82B5:pvrLenovoLegion515ARH05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoLegion515ARH05: dmi.product.family: Legion 5 15ARH05 dmi.product.name: 82B5 dmi.product.sku: LENOVO_MT_82B5_BU_idea_FM_Legion 5 15ARH05 dmi.product.version: Lenovo Legion 5 15ARH05 dmi.sys.vendor: LENOVO --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-07-02 (12 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash Tags: focal Uname: Linux 5.8.0-050800rc5-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/pop-os/+bug/1887190/+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
