Ubuntu
libinput package

libinput is not compatible with wet cloth, assertion failure brings down X11

Bug #1754487 reported by Zygmunt Krynicki on 2018-03-08

This bug report is a duplicate of: Bug #1751086: Xorg assert failure: Xorg: ../src/evdev-mt-touchpad-tap.c:1002: tp_tap_handle_state: Assertion `tp->tap.nfingers_down > 0' failed.. Edit Remove

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	libinput (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

Wiping my Thinkpad T470's touchpad with wet cloth causes an assertion error:

mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: Xorg: ../src/evdev-mt-touchpad-tap.c:1002: tp_tap_handle_state: Assertion `tp->tap.nfingers_down > 0' failed.
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE)
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) Backtrace:
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4d) [0x560ccebe591d]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 1: /usr/lib/xorg/Xorg (0x560ccea2d000+0x1bc6b9) [0x560ccebe96b9]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f84faa23000+0x12890) [0x7f84faa35890]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (gsignal+0xc7) [0x7f84fa670e97]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 4: /lib/x86_64-linux-gnu/libc.so.6 (abort+0x141) [0x7f84fa672801]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 5: /lib/x86_64-linux-gnu/libc.so.6 (0x7f84fa632000+0x3039a) [0x7f84fa66239a]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (0x7f84fa632000+0x30412) [0x7f84fa662412]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 7: /usr/lib/x86_64-linux-gnu/libinput.so.10 (0x7f84f7609000+0x1da40) [0x7f84f7626a40]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 8: /usr/lib/x86_64-linux-gnu/libinput.so.10 (0x7f84f7609000+0x18e17) [0x7f84f7621e17]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 9: /usr/lib/x86_64-linux-gnu/libinput.so.10 (0x7f84f7609000+0x1ad90) [0x7f84f7623d90]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 10: /usr/lib/x86_64-linux-gnu/libinput.so.10 (0x7f84f7609000+0xf5e1) [0x7f84f76185e1]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 11: /usr/lib/x86_64-linux-gnu/libinput.so.10 (libinput_dispatch+0x5f) [0x7f84f761460f]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 12: /usr/lib/xorg/modules/input/libinput_drv.so (0x7f84f785c000+0x8988) [0x7f84f7864988]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 13: /usr/lib/xorg/Xorg (0x560ccea2d000+0x1baa93) [0x560ccebe7a93]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 14: /usr/lib/xorg/Xorg (0x560ccea2d000+0x1bd191) [0x560ccebea191]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 15: /usr/lib/xorg/Xorg (0x560ccea2d000+0x1ba8de) [0x560ccebe78de]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 16: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f84faa23000+0x76db) [0x7f84faa2a6db]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (clone+0x3f) [0x7f84fa75388f]
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE)
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: Fatal server error:
mar 08 08:39:22 t470 /usr/lib/gdm3/gdm-x-session[2048]: (EE) Caught signal 6 (Aborted). Server aborting

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libinput10 1.10.1-1
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
BootLog: Error: [Errno 13] Brak dostępu: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 8 23:21:35 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Lenovo Skylake GT2 [HD Graphics 520] [17aa:2245]
InstallationDate: Installed on 2018-02-25 (11 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180214)
MachineType: LENOVO 20JNS04U2L
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=pl_PL.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-10-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
SourcePackage: libinput
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/13/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: N1QET69W (1.44 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20JNS04U2L
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1QET69W(1.44):bd12/13/2017:svnLENOVO:pn20JNS04U2L:pvrThinkPadT470W10DG:rvnLENOVO:rn20JNS04U2L:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T470 W10DG
dmi.product.name: 20JNS04U2L
dmi.product.version: ThinkPad T470 W10DG
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.90-1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc4-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc4-1ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu2
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 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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Revision history for this message

Zygmunt Krynicki (zyga) wrote on 2018-03-08:

CurrentDmesg.txt Edit (202.3 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (1.9 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (557.3 KiB, text/plain; charset="utf-8")
JournalErrors.txt Edit (35.4 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (9.9 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (338 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (4.8 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.2 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.7 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (9.6 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (195.3 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (50.0 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (54.6 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (9.0 KiB, text/plain; charset="utf-8")
xdpyinfo.txt Edit (24.4 KiB, text/plain; charset="utf-8")

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2018-03-09:

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1751086, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

Revision history for this message

Launchpad Janitor (janitor) wrote on 2018-03-20:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in libinput (Ubuntu):
status:	New → Confirmed

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libinput is not compatible with wet cloth, assertion failure brings down X11

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libinput package