unity-system-compositor crashes if libhybris installed on desktop

[Timo Jyrinki]

unity-system-compositor crashes if libhybris installed on PCs. This is correct because libhybris only supports Android.
Short-term fix: remove libhybris.
Long-term fix: See bug 1232962.

Installed unity-system-compositor, rebooted and logged in. Asus Zenbook UX31 with Sandy Bridge graphics.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: unity-system-compositor 0.0.1+13.10.20130810.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3
Uname: Linux 3.10.0-6-generic x86_64
ApportVersion: 2.12-0ubuntu3
Architecture: amd64
CrashCounter: 1
Date: Sat Aug 10 17:21:31 2013
Disassembly: => 0x0: Cannot access memory at address 0x0
ExecutablePath: /usr/sbin/unity-system-compositor
InstallationDate: Installed on 2012-03-16 (511 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120316)
MarkForUpload: True
ProcCmdline: /usr/sbin/unity-system-compositor --from-dm-fd 10 --to-dm-fd 13 --vt 7
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x0: Cannot access memory at address 0x0
 PC (0x00000000) not located in a known VMA region (needed executable region)!
SegvReason: executing NULL VMA
Signal: 11
SourcePackage: unity-system-compositor
StacktraceTop:
 ?? ()
 eglGetDisplay () from /usr/lib/x86_64-linux-gnu/libhybris-egl/libEGL.so.1
 mir::graphics::gbm::helpers::EGLHelper::setup_internal(mir::graphics::gbm::helpers::GBMHelper const&, bool) () from /usr/lib/x86_64-linux-gnu/libmirplatformgraphics.so
 mir::graphics::gbm::helpers::EGLHelper::setup(mir::graphics::gbm::helpers::GBMHelper const&) () from /usr/lib/x86_64-linux-gnu/libmirplatformgraphics.so
 mir::graphics::gbm::GBMDisplay::GBMDisplay(std::shared_ptr<mir::graphics::gbm::GBMPlatform> const&, std::shared_ptr<mir::graphics::gbm::VideoDevices> const&, std::shared_ptr<mir::graphics::DisplayConfigurationPolicy> const&, std::shared_ptr<mir::graphics::DisplayReport> const&) () from /usr/lib/x86_64-linux-gnu/libmirplatformgraphics.so
Title: unity-system-compositor crashed with SIGSEGV in eglGetDisplay()
UpgradeStatus: Upgraded to saucy on 2013-06-04 (66 days ago)
UserGroups:

[Timo Jyrinki (timo-jyrinki)]

After uninstalling libhybris & friends, it started not crashing. Running u-s-c now successfully.

[Robert Ancell (robert-ancell)]

Looks like a problem in mir, not u-s-c but keeping task open so others can find it.

[Daniel van Vugt (vanvugt)]

Does anyone know why we even have libhybris for i386 and amd64?...
https://launchpad.net/ubuntu/+source/libhybris

[Timo Jyrinki (timo-jyrinki)]

This is now affected by qtlocation update that has Ubuntu plugin included, which depends on libubuntu-application-api1 and brings hybris in. So xmir/unity-system-compositor stops working if upgrading to that qtlocation version.

The update is currently only in a PPA, but is aimed for archives.

[Timo Jyrinki (timo-jyrinki)]

Ok, disabling qtlocation Ubuntu plugin on x86 until this is resolved, with aim to re-enable it later.

[Daniel van Vugt (vanvugt)]

This is not a bug in Mir. It's a packaging mistake. And I've proposed a solution in bug 1232962.

[Kai Mast (kai-mast)]

Can confirm this on trusty

[Daniel van Vugt (vanvugt)]

It seems duplicates are occurring recently due to bug 1291761.

[Ricardo Salveti (rsalveti)]

With libhybris 0.1.0+git20131207+e452e83-0ubuntu10 it's not a problem if the package is installed as the EGL/GLES drivers have a lower alternatives priority, so it'll not replace the mesa one by default (we force libhybris as default only when producing ubuntu touch images).