Boot with kernel parameter "psmouse.elantech_smbus=0" and see if this helps.
-- 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/1803600 Title: Elantech - Touchpad not working after upgrading to 18.10 from 18.04 (ThinkPad L480) Status in linux package in Ubuntu: Confirmed Bug description: When updating from 18.04 to 18.10 on a ThinkPad L480 the Elantech touchpad stopped working. This means it is not recognized at all. This problem occured after the first boot in 18.10 `dmesg | grep -i elantech` shows the following errors: [ 3.409043] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f3001) [ 3.427372] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x10. [ 3.447275] psmouse serio1: elantech: Elan sample query result 00, 23, c8 [ 3.464905] psmouse serio1: elantech: Trying to set up SMBus access [ 5.576149] elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator [ 5.586505] elan_i2c 0-0015: failed to get resolution: -71 [ 5.586527] elan_i2c: probe of 0-0015 failed with error -71 uname: $ uname -a Linux test 4.18.0-10-generic #11-Ubuntu SMP Thu Oct 11 15:13:55 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux I found the following thread which solves the problem temporarly (and reports the same problem in Arch): https://bugs.archlinux.org/task/59714 Running the following command enables it again for the current session: sudo sh -c 'echo -n "elantech"> /sys/bus/serio/devices/serio1/protocol' dmesg afterwards: [ 569.522490] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f3001) [ 569.544584] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x10. [ 569.565939] psmouse serio1: elantech: Elan sample query result 00, 23, c8 Before running the fix: $ cat /sys/bus/serio/devices/serio1/protocol ETSMBus and after: $ cat /sys/bus/serio/devices/serio1/protocol ETPS/2 After reboot the command has to be run again, of course. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: xorg 1:7.7+19ubuntu8 ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12 Uname: Linux 4.18.0-11-generic x86_64 ApportVersion: 2.20.10-0ubuntu13.1 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: KDE Date: Thu Nov 15 20:59:36 2018 DistUpgraded: 2018-11-10 09:56:53,358 DEBUG icon theme changed, re-reading DistroCodename: cosmic DistroVariant: ubuntu DkmsStatus: virtualbox, 5.2.18, 4.15.0-38-generic, x86_64: installed virtualbox, 5.2.18, 4.18.0-10-generic, x86_64: installed virtualbox, 5.2.18, 4.18.0-11-generic, x86_64: installed GraphicsCard: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo UHD Graphics 620 [17aa:506a] InstallationDate: Installed on 2018-08-06 (101 days ago) InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) MachineType: LENOVO 20LS001AGE ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-11-generic root=UUID=a1f97298-a2b8-469d-80ed-eeee7497c6e6 ro quiet splash vt.handoff=1 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to cosmic on 2018-11-10 (5 days ago) dmi.bios.date: 02/09/2018 dmi.bios.vendor: LENOVO dmi.bios.version: R0QET37W (1.14 ) dmi.board.asset.tag: Not Available dmi.board.name: 20LS001AGE dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrR0QET37W(1.14):bd02/09/2018:svnLENOVO:pn20LS001AGE:pvrThinkPadL480:rvnLENOVO:rn20LS001AGE:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad L480 dmi.product.name: 20LS001AGE dmi.product.sku: LENOVO_MT_20LS_BU_Think_FM_ThinkPad L480 dmi.product.version: ThinkPad L480 dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.95-1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.4-0~b~padoka0 version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.4-0~b~padoka0 version.xserver-xorg-core: xserver-xorg-core 2:1.20.1-3ubuntu2.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803600/+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
