Hi Po-Hsu I spent this evening installing Ubuntu. I tried Xenial, Bionic, Focal and Groovy.
The proposed release worked on Xenial, but not on any of the others. Just to confirm the process: I installed a fresh copy of the release, then went to the developer options tab in the Software and Updates app and ticked the proposed box. When this was done, the app updated the cache. Then I used Software updater to upgrade and it worked (or not). For the releases that didn't work I also tried using apt from the terminal. Updated and then upgraded. Rebooted and then tested for the trackpad function. Only worked in Xenial. Let me know if I needed to do something different or to try again. Regards, Tom -- 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/1906128 Title: Touchpad not detected on ByteSpeed C15B laptop Status in linux package in Ubuntu: In Progress Status in linux source package in Xenial: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Focal: Fix Committed Status in linux source package in Groovy: Fix Committed Status in linux source package in Hirsute: In Progress Bug description: [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 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 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 RfKill: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1906128/+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
