thank for your bug report, that's a known libinput issue, a fix has been
commited upstream recently, see

** Information type changed from Private to Public

** Bug watch added: Bugzilla #105160

** Package changed: xorg-server (Ubuntu) => libinput (Ubuntu)

** Changed in: libinput (Ubuntu)
       Status: New => Fix Committed

** Changed in: libinput (Ubuntu)
   Importance: Medium => High

You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg-server in Ubuntu.

  Xorg assert failure: Xorg: ../src/evdev-mt-touchpad-tap.c:1002:
  tp_tap_handle_state: Assertion `tp->tap.nfingers_down > 0' failed.

Status in libinput package in Ubuntu:
  Fix Committed

Bug description:
  I found this bug while cleaning my touchpad. Pressing and moving it,
  it started to move cursor until it stopped moving for multitouch
  gestures. While pressing and moving my finger quickly, Xorg crashed
  and it showed some colored and short lines on the upper left part of
  the display. This, if done again, forces to crash.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: xserver-xorg-core 2:1.19.6-1ubuntu1
  ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13
  Uname: Linux 4.13.0-36-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  AssertionMessage: Xorg: ../src/evdev-mt-touchpad-tap.c:1002: 
tp_tap_handle_state: Assertion `tp->tap.nfingers_down > 0' failed.
  CompizPlugins: No value set for 
  CompositorRunning: None
  CrashCounter: 1
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Feb 22 16:42:55 2018
  DistUpgraded: 2018-02-22 16:14:14,915 DEBUG Running PostInstallScript: 
  DistroCodename: bionic
  DistroVariant: ubuntu
   r8168, 8.045.08, 4.13.0-32-generic, x86_64: installed
   r8168, 8.045.08, 4.13.0-36-generic, x86_64: installed
  ExecutablePath: /usr/lib/xorg/Xorg
  ExtraDebuggingInterest: Yes
   Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA 
     Subsystem: Hewlett-Packard Company HD Graphics 520 [103c:8136]
     Subsystem: Hewlett-Packard Company Radeon R5 M330 [103c:8136]
  InstallationDate: Installed on 2017-11-23 (90 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  MachineType: HP HP Notebook
  ProcCmdline: /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth 
/run/user/1000/gdm/Xauthority -background none -noreset -keeptty -verbose 3
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-36-generic.efi.signed 
root=UUID=b2348b07-e7c3-4656-8070-b4693379c731 ro quiet splash vt.handoff=1
  Signal: 6
  SourcePackage: xorg-server
   __assert_fail_base (fmt=<optimized out>, 
assertion=assertion@entry=0x7fa4955ef13b "tp->tap.nfingers_down > 0", 
file=file@entry=0x7fa4955ef178 "../src/evdev-mt-touchpad-tap.c", 
line=line@entry=1002, function=function@entry=0x7fa4955ef470 
"tp_tap_handle_state") at assert.c:92
   __GI___assert_fail (assertion=0x7fa4955ef13b "tp->tap.nfingers_down > 0", 
file=0x7fa4955ef178 "../src/evdev-mt-touchpad-tap.c", line=1002, 
function=0x7fa4955ef470 "tp_tap_handle_state") at assert.c:101
   () at /usr/lib/x86_64-linux-gnu/
   () at /usr/lib/x86_64-linux-gnu/
   () at /usr/lib/x86_64-linux-gnu/
  Title: Xorg assert failure: Xorg: ../src/evdev-mt-touchpad-tap.c:1002: 
tp_tap_handle_state: Assertion `tp->tap.nfingers_down > 0' failed.
  UpgradeStatus: Upgraded to bionic on 2018-02-22 (0 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo 12/25/2015
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.1E
  dmi.board.asset.tag: Type2 - Board Asset Tag 8136
  dmi.board.vendor: HP
  dmi.board.version: 31.35
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.chassis.version: Chassis Version
dmi:bvnInsyde:bvrF.1E:bd12/25/2015:svnHP:pnHPNotebook:pvrType1ProductConfigId:rvnHP:rn8136:rvr31.35:cvnHP:ct10:cvrChassisVersion: 103C_5335KV G=N L=CON B=HP HP Notebook
  dmi.product.version: Type1ProductConfigId
  dmi.sys.vendor: HP
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.90-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 17.3.3-0ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 17.3.3-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

To manage notifications about this bug go to:

Mailing list:
Post to     :
Unsubscribe :
More help   :

Reply via email to