https://lists.ubuntu.com/archives/kernel-team/2020-April/109386.html
** Description changed: + [SRU Justification] + + [Impact] + Touchpad function unavailable on some platforms with new ELAN touchpad + HIDs. + + [Fix] + https://lore.kernel.org/linux-input/000201d5a8bd$9fead3f0$dfc07bd0$@emc.com.tw/ + required to match these currently unsupported IDs. + + [Test Case] + 1. check if platform is affected, e.g. with ELAN0634: + + $ sudo acpidump | grep -C3 ELAN + 2A060: 49 4E 54 31 70 0A 20 49 44 41 44 A4 84 53 42 46 INT1p.IDAD..SBF + 2A070: 53 53 42 46 49 00 5B 82 42 0E 54 50 44 32 08 5F SSBFI.[.B.TPD2._ + 2A080: 41 44 52 00 08 49 44 41 44 00 08 48 49 44 32 00 ADR..IDAD..HID2. + 2A090: 08 5F 48 49 44 0D 45 4C 41 4E 30 36 33 34 00 08 ._HID.ELAN0634.. + 2A0A0: 5F 43 49 44 0D 50 4E 50 30 43 35 30 00 08 5F 55 _CID.PNP0C50.._U + 2A0B0: 49 44 01 14 4B 04 5F 44 53 4D 04 A0 3C 93 68 11 ID..K._DSM..<.h. + 2A0C0: 13 0A 10 F7 F6 DF 3C 67 42 55 45 AD 05 B3 0A 3D ......<gBUE....= + + 2. check if touchpad then appear in /proc/bus/input/devices when + applied. + + [Regression Potential] + Low. Only add new IDs for currently unsupported platforms. + + ========== Original Bug Description ========== + The Elan touchpad on my Lenovo Thinkbook isn't being detected, and hence isn't working. `sudo acpidump | grep -C3 ELAN` gives me the device's ACPI id: ```bash ghosthawkzero@EchelonV:~$ sudo acpidump | grep -C3 ELAN - 2A060: 49 4E 54 31 70 0A 20 49 44 41 44 A4 84 53 42 46 INT1p. IDAD..SBF - 2A070: 53 53 42 46 49 00 5B 82 42 0E 54 50 44 32 08 5F SSBFI.[.B.TPD2._ - 2A080: 41 44 52 00 08 49 44 41 44 00 08 48 49 44 32 00 ADR..IDAD..HID2. - 2A090: 08 5F 48 49 44 0D 45 4C 41 4E 30 36 33 34 00 08 ._HID.ELAN0634.. - 2A0A0: 5F 43 49 44 0D 50 4E 50 30 43 35 30 00 08 5F 55 _CID.PNP0C50.._U - 2A0B0: 49 44 01 14 4B 04 5F 44 53 4D 04 A0 3C 93 68 11 ID..K._DSM..<.h. - 2A0C0: 13 0A 10 F7 F6 DF 3C 67 42 55 45 AD 05 B3 0A 3D ......<gBUE....= - ghosthawkzero@EchelonV:~$ + 2A060: 49 4E 54 31 70 0A 20 49 44 41 44 A4 84 53 42 46 INT1p. IDAD..SBF + 2A070: 53 53 42 46 49 00 5B 82 42 0E 54 50 44 32 08 5F SSBFI.[.B.TPD2._ + 2A080: 41 44 52 00 08 49 44 41 44 00 08 48 49 44 32 00 ADR..IDAD..HID2. + 2A090: 08 5F 48 49 44 0D 45 4C 41 4E 30 36 33 34 00 08 ._HID.ELAN0634.. + 2A0A0: 5F 43 49 44 0D 50 4E 50 30 43 35 30 00 08 5F 55 _CID.PNP0C50.._U + 2A0B0: 49 44 01 14 4B 04 5F 44 53 4D 04 A0 3C 93 68 11 ID..K._DSM..<.h. + 2A0C0: 13 0A 10 F7 F6 DF 3C 67 42 55 45 AD 05 B3 0A 3D ......<gBUE....= + ghosthawkzero@EchelonV:~$ ``` Have attached the content from /proc/bus/input/devices. **EXPECTED** - touchpad to work **WHAT IS HAPPENING** - touchpad not detected and touchpad not working. More info: LSB release: ```bash ghosthawkzero@EchelonV:~$ lsb_release -rd Description: Ubuntu 19.10 Release: 19.10 - ghosthawkzero@EchelonV:~$ + ghosthawkzero@EchelonV:~$ ``` ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.3.0-29-generic 5.3.0-29.31 ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13 Uname: Linux 5.3.0-29-generic x86_64 ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: ghosthawkzero 1493 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: ghosthawkzero 1493 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Sun Feb 2 19:03:29 2020 InstallationDate: Installed on 2020-01-29 (3 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: LENOVO 20SM ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-29-generic root=UUID=c070ef84-6265-4593-a4c3-b0ceddf7e9b4 ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-5.3.0-29-generic N/A - linux-backports-modules-5.3.0-29-generic N/A - linux-firmware 1.183.3 + linux-restricted-modules-5.3.0-29-generic N/A + linux-backports-modules-5.3.0-29-generic N/A + linux-firmware 1.183.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/11/2019 dmi.bios.vendor: LENOVO dmi.bios.version: DJCN14WW dmi.board.name: LVAC/LVAD dmi.board.vendor: LENOVO dmi.board.version: SDK0L77769 WIN dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo ThinkBook 15-IIL dmi.modalias: dmi:bvnLENOVO:bvrDJCN14WW:bd12/11/2019:svnLENOVO:pn20SM:pvrLenovoThinkBook15-IIL:rvnLENOVO:rnLVAC/LVAD:rvrSDK0L77769WIN:cvnLENOVO:ct10:cvrLenovoThinkBook15-IIL: dmi.product.family: Thinkbook 15-IIL dmi.product.name: 20SM dmi.product.sku: LENOVO_MT_20SM_BU_idea_FM_Thinkbook 15-IIL dmi.product.version: Lenovo ThinkBook 15-IIL dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861610 Title: 'Elan touchpad' not detected on 'Lenovo ThinkBook 15 IIL' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861610/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
