I just typed a long email in reply to someone asking about the keyboard not working by email. The contents of that email are likely useful for other people who are still experiencing the keyboard not working too, so I've copy and pasted my entire reply below.
If you still need help with this please follow the provided debug instructions and provide the requested info. ### First of all lets see if we can find the root cause. Bug 1894017 is about the keyboard events being discarded in userspace, because userspace thinks the device is folded in tablet mode with the keyboard behind the display (and any key-presses are thus done accidentally). Please install evemu and then run: sudo evemu-record This will give you a list of available input devices. The problems reported in bug #1894017 are caused by a false-positive reporting of SW_TABLET_MODE with a value of 1. By one of the following input-devices: "Intel HID events" "Intel HID switches" "Intel Virtual Buttons" "Intel Virtual Switches" Or something like this, you can select a device by typing the number of its /dev/input/event# node. After selecting a device evemu-record will print which events the device can report. If it can report SW_TABLET_MODE then the output will also contain the current value of SW_TABLET_MODE, if this is 1 then that is the cause. (press CTRL+c to exit evemu-record) But you write "seems to stop responding at random" where as with the SW_TABLET_MODE problem I would expect it to simply not work at all (with certain kernel versions). So you may very well have a different problem then the one described in launchpad issue 1894017. What you can also try is running "sudo evemu-record" and then selecting the "AT Translated Set 2 keyboard" keyboard. After this if you type some keys on the keyboard they should show up in evemu-record as key-presses. If this works, then try doing it again (over e.g. ssh, or with an external usb kbd) when the keyboard has stopped responding. I suspect that you will find that at this point evemu-record will also no longer report keys, which means that the problem is happening at a lower level. I suspect that you will find that the problem indeed is happening at a lower-level and that you need something like this: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=addab6febc42ed94e4eee1abbe486150e4f8b9e9 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e5b1032a656e9aa4c7a4df77cb9156a2a651a5f9 In order to determine what is necessary to fix things I need a number of things: 1. output of: "grep . /sys/class/dmi/id/* 2> /dev/null" run from a terminal 2. Install acpica-tools and then run: "sudo acpidump -o acpidump.txt" and then attach the generated acpidump.txt file to your next email 3. It would help a lot if we can go from "seems to stop responding at random" to "stops responding when I do a, followed by b..." some ideas here are: 3.1 perhaps it stops responding after folding the display past 180 degrees (so a little beyond it lyinf fully flat on the table) and then back again? 3.2 perhaps it stops responding after folding the display all the way back so that the device is fully in tablet mode; and then back to laptop mode again ? 3.3 perhaps it stops responding after a suspend/resume? Regards, Hans -- 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/1894017 Title: Keyboard not working Status in linux package in Ubuntu: Fix Released Bug description: The laptop keyboard doesn't work at login or in the de. If I ctrl+alt+F3 from an external usb keyboard to a terminal the laptop keyboard works. An external usb keyboard works everywhere. The laptop's keyboard does work everywhere with the previous kernel 5.4.0.42. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-45-lowlatency 5.4.0-45.49 ProcVersionSignature: Ubuntu 5.4.0-45.49-lowlatency 5.4.55 Uname: Linux 5.4.0-45-lowlatency x86_64 ApportVersion: 2.20.11-0ubuntu27.8 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Thu Sep 3 03:09:49 2020 InstallationDate: Installed on 2019-08-07 (392 days ago) InstallationMedia: Kubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: Hewlett-Packard HP Pavilion 11 x360 PC ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-45-lowlatency root=UUID=6035c42c-766d-44fd-b45c-6cdf9c74e0b5 ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-5.4.0-45-lowlatency N/A linux-backports-modules-5.4.0-45-lowlatency N/A linux-firmware 1.187.3 SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-04-06 (149 days ago) dmi.bios.date: 03/13/2018 dmi.bios.vendor: Insyde dmi.bios.version: F.30 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 2209 dmi.board.vendor: Hewlett-Packard dmi.board.version: 57.57 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.30:bd03/13/2018:svnHewlett-Packard:pnHPPavilion11x360PC:pvr0977100000405F00010420180:rvnHewlett-Packard:rn2209:rvr57.57:cvnHewlett-Packard:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=MIN dmi.product.name: HP Pavilion 11 x360 PC dmi.product.sku: M0B61EA#ACQ dmi.product.version: 0977100000405F00010420180 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1894017/+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
