Public bug reported: Brightness hotkeys (Fn + F11 for decrease and Fn + F12 for increase) do not work on Ubuntu 20.04 and Lenovo S740 laptop. The brightness hotkeys did not work on 19.10 either.
I followed the guide here: https://wiki.ubuntu.com/Hotkeys/Troubleshooting In "Step-by-step Troubleshooting", none of the steps (1-7) did produce any reaction to brightness change key combinations. However, I am able to change the laptop screen brightness through the brightness applet. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-21-generic 5.4.0-21.25 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 ApportVersion: 2.20.11-0ubuntu26 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: elias 1447 F.... pulseaudio /dev/snd/controlC0: elias 1447 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Apr 12 16:12:01 2020 InstallationDate: Installed on 2019-11-19 (144 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: LENOVO 81RS ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=UUID=101c7da4-860d-4496-ae06-d98699795f9a ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-21-generic N/A linux-backports-modules-5.4.0-21-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-04-04 (7 days ago) dmi.bios.date: 03/10/2020 dmi.bios.vendor: LENOVO dmi.bios.version: BYCN33WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga S740-14IIL dmi.modalias: dmi:bvnLENOVO:bvrBYCN33WW:bd03/10/2020:svnLENOVO:pn81RS:pvrLenovoYogaS740-14IIL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoYogaS740-14IIL: dmi.product.family: Yoga S740-14IIL dmi.product.name: 81RS dmi.product.sku: LENOVO_MT_81RS_BU_idea_FM_Yoga S740-14IIL dmi.product.version: Lenovo Yoga S740-14IIL dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug focal ** Attachment added: "udev-db.txt" https://bugs.launchpad.net/bugs/1872311/+attachment/5352595/+files/udev-db.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872311 Title: Brightness hotkeys not working on Lenovo S740 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872311/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
