The touchpad of my Lenovo Thinkpad L480 does not work in both Ubuntu Disco live and Eoan daily image. However, it works fine in Bionic 18.04.3 with the HWE kernel of Disco. So I guess there is a bug in a different place beside the kernel.
-- 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 Status in linux package in Ubuntu: Confirmed Bug description: Confirmed affected laptops: ThinkPad: L480 L580 P72 P52 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
