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/1932069/+attachment/5632132/+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/1932069 Title: Touchpad not working at all Status in linux package in Ubuntu: Confirmed Bug description: Notebook Lenovo BS-145 15 HL ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: linux-image-5.11.0-18-generic 5.11.0-18.19 ProcVersionSignature: Ubuntu 5.11.0-18.19-generic 5.11.17 Uname: Linux 5.11.0-18-generic x86_64 ApportVersion: 2.20.11-0ubuntu65.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: cesar 1314 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Jun 15 16:36:11 2021 InstallationDate: Installed on 2021-06-15 (0 days ago) InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 174f:1176 Syntek Integrated Camera Bus 001 Device 005: ID 10c4:8105 Silicon Labs USB OPTICAL MOUSE Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bluetooth 9460/9560 Jefferson Peak (JfP) Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 82HB ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.11.0-18-generic root=UUID=2ff10f98-8e1f-42ac-98b7-284459b8d285 ro quiet splash vt.handoff=7 RebootRequiredPkgs: gnome-shell RelatedPackageVersions: linux-restricted-modules-5.11.0-18-generic N/A linux-backports-modules-5.11.0-18-generic N/A linux-firmware 1.197.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/23/2020 dmi.bios.release: 1.51 dmi.bios.vendor: LENOVO dmi.bios.version: DKCN51WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo BS145-15IIL dmi.ec.firmware.release: 1.51 dmi.modalias: dmi:bvnLENOVO:bvrDKCN51WW:bd12/23/2020:br1.51:efr1.51:svnLENOVO:pn82HB:pvrLenovoBS145-15IIL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrLenovoBS145-15IIL: dmi.product.family: BS145-15IIL dmi.product.name: 82HB dmi.product.sku: LENOVO_MT_82HB_BU_idea_FM_BS145-15IIL dmi.product.version: Lenovo BS145-15IIL dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1932069/+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
