The bug was fixed after I logged out and change the setting on login screen (lower right of screen) to Ubuntu on Xorg.
-- 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/1938693 Title: Flameshot doesn't work anymore after linux upgrade to 21.04 Status in linux package in Ubuntu: New Bug description: After the linux upgrade to 21.04, the package flameshot is not working anymore. I click to take a screenshot but nothing happens. ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: linux-image-5.11.0-25-generic 5.11.0-25.27 ProcVersionSignature: Ubuntu 5.11.0-25.27-generic 5.11.22 Uname: Linux 5.11.0-25-generic x86_64 ApportVersion: 2.20.11-0ubuntu65.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: kaio 1676 F.... pulseaudio /dev/snd/controlC1: kaio 1676 F.... pulseaudio CasperMD5CheckResult: unknown Date: Mon Aug 2 08:59:19 2021 InstallationDate: Installed on 2020-12-13 (231 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022) MachineType: Acer Aspire VX5-591G ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-25-generic root=UUID=e4a2a124-2896-4512-af5d-204bf0f6096b ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.11.0-25-generic N/A linux-backports-modules-5.11.0-25-generic N/A linux-firmware 1.197.2 SourcePackage: linux UpgradeStatus: Upgraded to hirsute on 2021-07-31 (1 days ago) dmi.bios.date: 07/07/2017 dmi.bios.release: 1.6 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.06 dmi.board.asset.tag: Type2 - Board Serial Number dmi.board.name: Wish_KLS dmi.board.vendor: KBL dmi.board.version: V1.06 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.06 dmi.ec.firmware.release: 1.3 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.06:bd07/07/2017:br1.6:efr1.3:svnAcer:pnAspireVX5-591G:pvrV1.06:rvnKBL:rnWish_KLS:rvrV1.06:cvnAcer:ct10:cvrV1.06: dmi.product.family: Aspire VX 15 dmi.product.name: Aspire VX5-591G dmi.product.sku: 0000000000000000 dmi.product.version: V1.06 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1938693/+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