[Bug 1732612] Re: Alt+Printscreen not working (doesn't generate keypress event)

[Khurshid Alam]

Workaround (1):

press and hold Print Screen
press and hold Alt
release Print Screen (and then Alt)

This seemed to work for me, but it shouldn’t be necessary.


Workaround (2) For Laptops if Printscreen is combined with Sysreq:

sudo sysctl -w kernel.sysrq=1 #disables magic sysreq for that session.

Press Alt+Printscreen or Alt+Fn+Printscreen (first Alt, then Fn).

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Title:
  Alt+Printscreen not working (doesn't generate keypress event)

Status in systemd package in Ubuntu:
  Confirmed
Status in unity package in Ubuntu:
  Confirmed

Bug description:
  Since I have upgraded to Ubuntu 17.10 Alt+PrintScreen doesn't work on
  my computer. I'm using Unity DE, with default settings.

  The problem is not about taking screnshots.

  xev recognizes when I press down the alt key, but nothing happens when
  I press Print Screen with alt being pressed (it does when PrintScreen
  is pressed by itself)

  Here is evtest output when I press Alt+Printscreen:

  # Alt pressed down:
  Event: time 1510817663.883489, -------------- SYN_REPORT ------------
  Event: time 1510817663.923476, type 1 (EV_KEY), code 56 (KEY_LEFTALT), value 2
  Event: time 1510817663.923476, -------------- SYN_REPORT ------------
  Event: time 1510817663.963479, type 1 (EV_KEY), code 56 (KEY_LEFTALT), value 2
  Event: time 1510817663.963479, -------------- SYN_REPORT ------------
  Event: time 1510817663.993036, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70046

  # Print screen pressed
  Event: time 1510817663.993036, -------------- SYN_REPORT ------------
  Event: time 1510817664.945032, type 1 (EV_KEY), code 56 (KEY_LEFTALT), value 0

  # Alt released
  Event: time 1510817664.945032, -------------- SYN_REPORT ------------
  Event: time 1510817664.945086, type 1 (EV_KEY), code 56 (KEY_LEFTALT), value 1
  Event: time 1510817664.945086, type 1 (EV_KEY), code 99 (KEY_SYSRQ), value 1
  Event: time 1510817664.945086, -------------- SYN_REPORT ------------
  Event: time 1510817664.945097, type 1 (EV_KEY), code 99 (KEY_SYSRQ), value 0
  Event: time 1510817664.945097, type 1 (EV_KEY), code 56 (KEY_LEFTALT), value 0
  Event: time 1510817664.945097, -------------- SYN_REPORT ------------

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: udev 234-2ubuntu12.1
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.1
  Architecture: amd64
  CurrentDesktop: Unity:Unity7:ubuntu
  CustomUdevRuleFiles: 67-xorg-wizardpen.rules 99-displaylink.rules 60-vboxdrv.rules 70-snap.core.rules 99-anbox.rules
  Date: Thu Nov 16 08:29:46 2017
  InstallationDate: Installed on 2017-03-26 (234 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Beta amd64 (20170321)
  MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  SourcePackage: systemd
  UpgradeStatus: Upgraded to artful on 2017-10-23 (23 days ago)
  dmi.bios.date: 10/24/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F1
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z77-HD3
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF1:bd10/24/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77-HD3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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