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Message #76916
[Bug 1381721] Re: unity8 crashed with SIGSEGV in intelClear()
*** This bug is a duplicate of bug 1275398 ***
https://bugs.launchpad.net/bugs/1275398
OK, anpok says this is actually just bug 1275398. Because not having
working buffer sharing for i915 yet not only creates black windows but
also some uninitialized buffer fields. Hence crash on clear. So this is
a duplicate.
** This bug has been marked a duplicate of bug 1275398
i915 driver/i945 hardware: Mir GL clients are rendered as black or transparent windows when using i945 graphics
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https://bugs.launchpad.net/bugs/1381721
Title:
unity8 crashed with SIGSEGV in intelClear()
Status in Mir:
Incomplete
Status in “mesa” package in Ubuntu:
Incomplete
Status in “mir” package in Ubuntu:
Incomplete
Status in “unity8” package in Ubuntu:
Incomplete
Bug description:
I tied the daliy image on my eeepc t91mt but it looks like it crashed on startup.
I just see a black screen and the cursor.
ProblemType: Crash
DistroRelease: Ubuntu 14.10
Package: unity8 8.00+14.10.20141013.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-22.29-generic 3.16.4
Uname: Linux 3.16.0-22-generic i686
ApportVersion: 2.14.7-0ubuntu6
Architecture: i386
CasperVersion: 1.345
Date: Wed Oct 15 19:38:11 2014
ExecutablePath: /usr/bin/unity8
ExecutableTimestamp: 1413216480
LiveMediaBuild: Ubuntu-Desktop-Next 14.10 "Utopic Unicorn" - Alpha i386 (20141015)
ProcCmdline: unity8
ProcCwd: /home/ubuntu-desktop-next
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SegvAnalysis:
Segfault happened at: 0xb15f9921: cmpl $0x2,0x18(%eax)
PC (0xb15f9921) ok
source "$0x2" ok
destination "0x18(%eax)" (0x00000018) not located in a known VMA region (needed writable region)!
Stack memory exhausted (SP below stack segment)
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: unity8
StacktraceTop:
?? () from /usr/lib/i386-linux-gnu/dri/i915_dri.so
?? () from /usr/lib/i386-linux-gnu/dri/i915_dri.so
QSGBindable::clear(QFlags<QSGRenderer::ClearModeBit>) const () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
QSGBatchRenderer::Renderer::render() () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
SystemImageInfo:
current build number: 0
device name:
channel: daily
last update: Unknown
Title: unity8 crashed with SIGSEGV in QSGBindable::clear()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
upstart.unity8-dash.log:
UbuntuClientIntegration: connection to Mir server failed. Check that a Mir server is
running, and the correct socket is being used and is accessible. The shell may have
rejected the incoming connection, so check its log file
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