Public bug reported: Without a 'sleep 1' before +dpms command, slock or xtrlock, etc. will cause a laptop backlight to immediately reactivate.
description: Notebook product: 4180AP3 vendor: LENOVO version: ThinkPad T420 *-firmware description: BIOS vendor: LENOVO physical id: d version: 83ET82WW (1.52 ) date: 06/04/2018 size: 128KiB capacity: 8128KiB capabilities: pci pnp upgrade shadowing cdboot bootselect edd int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecification *-display description: VGA compatible controller product: 2nd Generation Core Processor Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:26 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:4000(size=64) memory:c0000-dffff ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: xfce4-session 4.12.1-3ubuntu4 [modified: usr/bin/xflock4] ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Nov 7 10:11:37 2018 InstallationDate: Installed on 2018-11-04 (2 days ago) InstallationMedia: Xubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2) SourcePackage: xfce4-session UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: xfce4-session (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic intel xubuntu ** Patch added: "sleep added." https://bugs.launchpad.net/bugs/1802138/+attachment/5210073/+files/xflock4.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1802138 Title: xflock4 needs a 'sleep 1' before 'xset dpms force off' to prevent backlight from immediately reactivating To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-session/+bug/1802138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs