This is likely a duplicate of https://bugs.launchpad.net/bugs/1878279
The current upstream resolution to this problem is https://git.kernel.org/linus/d341838d776a ("x86/PCI: Disable E820 reserved region clipping via quirks"), which relies on quirks that match DMI Vendor, Product Version, Product Name, and Board Name. This isn't an ideal solution because there are likely other systems we don't know about that need a similar fix. The patch I'm attaching here is an experimental idea to work around this issue without the maintenance burden of the quirks. If anybody would be willing to test this patch, I would be very grateful. To test it, apply this patch to your kernel, boot with "pci=use_e820 efi=debug", and collect the dmesg log. ** Attachment added: "experimental patch to remove EfiMemoryMappedIO" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1884232/+attachment/5632129/+files/remove-mmio -- 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/1884232 Title: touchpad and touchscreen doesn't work at all on ACER Spin 5 (SP513-54N) Status in linux package in Ubuntu: Confirmed Status in linux source package in Focal: Won't Fix Status in linux source package in Jammy: Fix Released Bug description: [Impact] E820 reserved retire memory window, and make other hot-added devices unable to get the required memory window. [Fix] It only can be fixed by a list of quirk to mark those machines out, and requires below commits from v5.19-rc1 and v5.19-rc3 a2b36ffbf5b6 x86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions" d341838d776a x86/PCI: Disable E820 reserved region clipping via quirks fa6dae5d8208 x86/PCI: Add kernel cmdline options to use/ignore E820 reserved regions 4c5e242d3e93 x86/PCI: Clip only host bridge windows for E820 regions 31bf0f433325 x86: Log resource clipping for E820 regions 93d256cd3c1e x86/PCI: Eliminate remove_e820_regions() common subexpressions [Test] Verified by the bug reporter. [Where problems could occur] The 6 commits are all clean cherry-picked, and the sixth commit reverts the third commit which are the 2 commits that do real functional changes. a2b36ffbf5b6 ("x86/PCI: Revert \"x86/PCI: Clip only host bridge windows for E820 regions\"") 4c5e242d3e93 ("x86/PCI: Clip only host bridge windows for E820 regions") The fourth and and fifth commits introduce a new quirk to ignore E820 reserved regions and the quirk only affects the listed machines. Drivers that operates E820 table may fail if we ignore the E820 regions, but it should have no impact on the listed consumer PCs. =============================================== Touchpad is not working at all on ACER Spin 5 SP513-54N. According to https://wiki.ubuntu.com/DebuggingTouchpadDetection#In_case_your_Touchpad_doesn.27t_work_at_all_.28No_response_from_the_Touchpad.29 I am creating this kernel bug issue. There are more issues, too, like touchscreen not working and Ubuntu not installable - see here if interrested https://askubuntu.com/questions/1251719/ I would like to run Ubuntu on this machine and I am willing to help with any debug or kernel tweaking... Please let me know. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-26-generic 5.4.0-26.30 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 4195 F.... pulseaudio CasperMD5CheckResult: skip CasperVersion: 1.445 CurrentDesktop: ubuntu:GNOME Date: Fri Jun 19 10:44:58 2020 LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: Acer Spin SP513-54N 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=/casper/vmlinuz file=/cdrom/preseed/username.seed maybe-ubiquity quiet splash --- RelatedPackageVersions: linux-restricted-modules-5.4.0-26-generic N/A linux-backports-modules-5.4.0-26-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/21/2020 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.00 dmi.board.name: Caboom_IL dmi.board.vendor: IL dmi.board.version: V1.00 dmi.chassis.type: 31 dmi.chassis.vendor: Acer dmi.chassis.version: V1.00 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.00:bd02/21/2020:svnAcer:pnSpinSP513-54N:pvrV1.00:rvnIL:rnCaboom_IL:rvrV1.00:cvnAcer:ct31:cvrV1.00: dmi.product.family: Spin 5 dmi.product.name: Spin SP513-54N dmi.product.sku: 0000000000000000 dmi.product.version: V1.00 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1884232/+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
