Unity shell hung/frozen in nux::TextEntry::ProcessKeyEvent when typing in dash

[Daniel van Vugt]

Unity shell hung/frozen in nux::TextEntry::ProcessKeyEvent when typing in dash. This has happened a couple of times recently. It results in compiz being stuck at 100% CPU and nothing responding until compiz is killed or I log in again.

The interesting part is:
#6 0x00007f4bd89ce9db in pango_shape_full () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#7 0x00007f4bd89b2316 in ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#8 0x00007f4bd89b2608 in ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#9 0x00007f4bd89c530a in ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#10 0x00007f4bd89c636e in pango_layout_get_line_count () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#11 0x00007f4bd8495188 in nux::TextEntry::CreateLayout() () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
#12 0x00007f4bd84954ed in nux::TextEntry::EnsureLayout() () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
#13 0x00007f4bd84959fa in nux::TextEntry::AdjustScroll() () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
#14 0x00007f4bd8497a29 in nux::TextEntry::QueueRefresh(bool, bool) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
#15 0x00007f4bd8498f7f in nux::TextEntry::ProcessKeyEvent(unsigned long, unsigned long, unsigned long, char const*, unsigned short) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: compiz-core 1:0.9.10+13.10.20131011-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Sun Feb 16 16:44:49 2014
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:05a4]
InstallationDate: Installed on 2013-10-25 (113 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: Dell Inc. OptiPlex 9020
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=72a88a8d-7c40-40b0-ac24-6f271d94b250 ro quiet splash vt.handoff=7
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/05/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0XCR8D
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 15
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA05:bd12/05/2013:svnDellInc.:pnOptiPlex9020:pvr01:rvnDellInc.:rn0XCR8D:rvrA01:cvnDellInc.:ct15:cvr:
dmi.product.name: OptiPlex 9020
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2~saucy1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Thu Feb 13 20:59:29 2014
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 10580
 vendor HWP
xserver.version: 2:1.14.5-1ubuntu2~saucy1

[Andrea Azzarone (azzar1)]

Thank you for your bug report. That ticket is quite old and we didn't get recent report of the problem, also it seems to work correctly now, closing. Feel free to reopen if you can still reproduce in more recent versions.