Patch applied upstream: https://github.com/torvalds/linux/commit/a48491c65b513e5cdc3e7a886a4db915f848a5f5
And submitted for ubuntu kernels: https://lists.ubuntu.com/archives/kernel-team/2020-December/115501.html ** Description changed: - Touchpad hardware is OK and works for Win10. Not working for live disc, - not for 18.04 and not for 20.04 after upgrading. I've attached a - Logitech wireless mouse with its USB adapter and that works. Bluetooth - is also missing, but I have not started trying to skull that out. I'm - happy to help try debugging things, and to help resolve the issue. + [Impact] + Touchpad on a ByteSpeed C15B laptop is not working. + User will need to add i8042.noloop=1 to boot options to make it work. + + [Fix] + * a48491c65b513e ("Input: i8042 - add ByteSpeed touchpad to noloop table") + + This fix can be cherry-picked into all affected releases. + + [Test Case] + Test kernel for Bionic / Focal can be found here: + https://people.canonical.com/~phlin/kernel/lp-1906128-C15B/ + + And they have been tested with positive test results. + + [Where problems could occur] + The fix is just a small and simple hardware quirk. I can't think of any potential problem for now. + + == Original Bug Report == + Touchpad hardware is OK and works for Win10. Not working for live disc, not for 18.04 and not for 20.04 after upgrading. I've attached a Logitech wireless mouse with its USB adapter and that works. Bluetooth is also missing, but I have not started trying to skull that out. I'm happy to help try debugging things, and to help resolve the issue. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-54-generic 5.4.0-54.60 ProcVersionSignature: Ubuntu 5.4.0-54.60-generic 5.4.65 Uname: Linux 5.4.0-54-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.12 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC1: tom 1395 F.... pulseaudio - /dev/snd/controlC0: tom 1395 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC1: tom 1395 F.... pulseaudio + /dev/snd/controlC0: tom 1395 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sat Nov 28 19:09:05 2020 InstallationDate: Installed on 2020-01-26 (307 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) MachineType: ByteSpeed LLC ByteSpeed Laptop C15B ProcEnviron: - TERM=xterm-256color - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-54-generic root=UUID=07b919ee-c6ad-41a5-9c64-df3c8e477b6f ro quiet splash i8042.reset i8042.nomux i8042.nopnp i8042noloop noapic vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-5.4.0-54-generic N/A - linux-backports-modules-5.4.0-54-generic N/A - linux-firmware 1.187.4 + linux-restricted-modules-5.4.0-54-generic N/A + linux-backports-modules-5.4.0-54-generic N/A + linux-firmware 1.187.4 RfKill: - 0: phy0: Wireless LAN - Soft blocked: no - Hard blocked: no + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-11-25 (3 days ago) dmi.bios.date: 03/18/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: C15B.616 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: C15B dmi.board.vendor: PEGATRON CORPORATION dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: ByteSpeed LLC dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrC15B.616:bd03/18/2014:svnByteSpeedLLC:pnByteSpeedLaptopC15B:pvr1.0:rvnPEGATRONCORPORATION:rnC15B:rvr1.0:cvnByteSpeedLLC:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: PEGA Family dmi.product.name: ByteSpeed Laptop C15B dmi.product.sku: 0 dmi.product.version: 1.0 dmi.sys.vendor: ByteSpeed LLC ** Changed in: linux (Ubuntu Groovy) Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: linux (Ubuntu Xenial) Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: linux (Ubuntu Focal) Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: linux (Ubuntu Xenial) Status: New => In Progress ** Changed in: linux (Ubuntu Bionic) Status: New => In Progress ** Changed in: linux (Ubuntu Focal) Status: New => In Progress ** Changed in: linux (Ubuntu Groovy) Status: New => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906128 Title: Touchpad not detected on ByteSpeed C15B laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1906128/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
