Public bug reported: With a fresh installed ubuntu server, you try to enable the http2 module, apache fails after restarting.
$ sudo a2enmod http2 $ sudo service apache2 restart Viewing the logs I get: Apr 08 12:23:30 1604srv apache2[21683]: apache2: Syntax error on line 140 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/http2.load: Cannot load /usr/lib/apache2/modules/mod_http2.so into server: /usr/lib/apache2/modules/mod_http2.so: cannot open shared object file: No such file or directory Checking why this file is missing from the package, so I downloaded the source of the ubuntu package for 16.04 $ sudo apt-get source apache2 IF you install the package libnghttp2-dev before recompiling, the mod_http2.so file is generated properly, and after installing my locally compiled package, I can use HTTP/2 without any problem. Note: When testing you might need to enable SSL and add "Protocols h2 http1.1" to the virtualhost. I added examples in this report. My suggestion would be to add the libnghttp2-dev package to the build- dep for the apache2 package. Please note that this bug would affect the global adoption of HTTP2 if the LTS distro is released with the module missing. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: apache2 2.4.18-2ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-17.33-generic 4.4.6 Uname: Linux 4.4.0-17-generic x86_64 Apache2ConfdDirListing: False ApportVersion: 2.20.1-0ubuntu1 Architecture: amd64 Date: Fri Apr 8 12:20:47 2016 InstallationDate: Installed on 2016-04-07 (0 days ago) InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Beta amd64 (20160407) ProcEnviron: LANGUAGE=en_US:en TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: apache2 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apache2.apache2.conf: [modified] modified.conffile..etc.apache2.sites.available.000.default.conf: [modified] modified.conffile..etc.apache2.sites.available.default.ssl.conf: [modified] mtime.conffile..etc.apache2.apache2.conf: 2016-04-08T10:44:21.140224 mtime.conffile..etc.apache2.sites.available.000.default.conf: 2016-04-08T11:34:18.200930 mtime.conffile..etc.apache2.sites.available.default.ssl.conf: 2016-04-08T12:09:09.053943 ** Affects: apache2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568087 Title: Apache2 package missing mod_http2.so for HTTP/2 on 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1568087/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs