Xvfb fails with new mesa, results in ubiquity FTBFS

[Dimitri John Ledkov]

[Impact]

fakeroot ./debian/rules tests

from ubiquity 17.04.1 package, from zesty-proposed to build successfully.

It does in zesty-release. It does in zesty-proposed too, if one downgrades: libgl1-mesa-glx libglapi-mesa

If one uses libgl1-mesa-glx libglapi-mesa from zesty-proposed, the Xvfb fails to spawn and thus tests fail, and the build fails.

[Test case]

* try an ssh -X and start emacs
* launch apport-gtk with new mesa installed

[Regression potential]
* none, part of upstream code, they are checks for null pointer exceptions, missing in the current code

[Timo Aaltonen (tjaalton)]

this bug is in libepoxy

https://bugzilla.redhat.com/show_bug.cgi?id=1395366

[Launchpad Janitor (janitor)]

This bug was fixed in the package libepoxy - 1.3.1-1ubuntu1

---------------
libepoxy (1.3.1-1ubuntu1) zesty; urgency=medium

  * add-null-checks.diff: Fix gtk apps crashings on Xvfb. (LP: #1647600)

 -- Timo Aaltonen <email address hidden> Thu, 08 Dec 2016 14:49:13 +0200

[Gianfranco Costamagna (costamagnagianfranco)]

I did a sync and rebased the above patch, would be nice to recheck it on artful

[Brian Murray (brian-murray)]

Thanks for uploading the fix for this bug report to -proposed. However, when reviewing the package in -proposed and the details of this bug report I noticed that the bug description is missing information required for the SRU process. You can find full details at http://wiki.ubuntu.com/StableReleaseUpdates#Procedure but essentially this bug is missing some of the following: a statement of impact, a test case and details regarding the regression potential. Thanks in advance!

[Gianfranco Costamagna (costamagnagianfranco)]

can anybody please test my ppa?
I pushed no change rebuilds for ubiquity and the fixes for libepoxy there
https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/locutusofborg-ppa

[Timo Aaltonen (tjaalton)]

I don't think this is needed for yakkety, since it won't get a new mesa backport, and is soon EOL anyway.

[Timo Aaltonen (tjaalton)]

Hello Dimitri, or anyone else affected,

Accepted libepoxy into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/libepoxy/1.3.1-1ubuntu0.16.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Gianfranco Costamagna (costamagnagianfranco)]

Ping, can anybody please verify this?

[Gianfranco Costamagna (costamagnagianfranco)]

I can see that ubiquity now is building correctly, and nobody reported regressions so far

[Gianfranco Costamagna (costamagnagianfranco)]

Get:333 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 libepoxy-dev amd64 1.3.1-1ubuntu0.16.04.1 [112 kB]
[...]
dh_md5sums
NO_PNG_PKG_MANGLE=1 dh_builddeb -- -Zxz
dpkg-deb: building package 'ubiquity' in '../ubiquity_2.21.63.3_amd64.deb'.
dpkg-deb: building package 'ubiquity-frontend-debconf' in '../ubiquity-frontend-debconf_2.21.63.3_amd64.deb'.
dpkg-deb: building package 'ubiquity-frontend-gtk' in '../ubiquity-frontend-gtk_2.21.63.3_amd64.deb'.
 dpkg-genchanges >../ubiquity_2.21.63.3_amd64.changes

seems good

[Launchpad Janitor (janitor)]

This bug was fixed in the package libepoxy - 1.3.1-1ubuntu0.16.04.1

---------------
libepoxy (1.3.1-1ubuntu0.16.04.1) xenial; urgency=medium

  * Fix mesa crash (NPE) when no GL is available on X server
    LP: #1647600

 -- Gianfranco Costamagna <email address hidden> Tue, 06 Jun 2017 11:28:19 +0200

[Chris J Arges (arges)]

The verification of the Stable Release Update for libepoxy has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Brian Murray (brian-murray)]

Hello Dimitri, or anyone else affected,

Accepted libepoxy into zesty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/libepoxy/1.3.1-1ubuntu1.17.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Gianfranco Costamagna (costamagnagianfranco)]

dpkg-deb: building package 'ubiquity-frontend-gtk' in '../ubiquity-frontend-gtk_17.04.9_amd64.deb'.
dpkg-deb: building package 'ubiquity' in '../ubiquity_17.04.9_amd64.deb'.
dpkg-deb: building package 'ubiquity-frontend-debconf' in '../ubiquity-frontend-debconf_17.04.9_amd64.deb'.

it builds fine!

[Launchpad Janitor (janitor)]

This bug was fixed in the package libepoxy - 1.3.1-1ubuntu1.17.04.1

---------------
libepoxy (1.3.1-1ubuntu1.17.04.1) zesty; urgency=medium

  * Fix mesa crash (NPE) when no GL is available on X server
    LP: #1647600

 -- Gianfranco Costamagna <email address hidden> Tue, 06 Jun 2017 11:36:27 +0200

[Fadi Racy (mo-mashi)]

Anyone getting the segmentation fault bug in 17.10, would it still be libepoxy or could it be something else?

[Fadi Racy (mo-mashi)]

Was this fix applied in 17.10? I'm still getting Segmentation fault (core dumped) when trying to run a non-root synaptic (basically for browsing purposes only) in Wayland.

[Fadi Racy (mo-mashi)]

sorry, didn't realize I had already posted here...

[Gianfranco Costamagna (costamagnagianfranco)]

https://bugs.launchpad.net/ubuntu/+source/ettercap/+bug/1713313

@Fadi