Hello again, We tried to install the lttng-modules-dkms package using apt and the "ppa:lttng/ppa" repository, but we get the following information and error: Unpacking lttng-modules-dkms (from .../lttng-modules-dkms_2.6.x+ stable+bzr727+pack22+201504291801~ubuntu12.04.1_all.deb) ... Setting up lttng-modules-dkms (2.6.x+stable+bzr727+pack22+201504291801~ubuntu12.04.1) ... Loading new lttng-modules-2.6.x+stable+bzr727+pack22+201504291801~ubuntu 12.04.1 DKMS files... First Installation: checking all kernels... Building only for 3.13.0-32-generic Building initial module for 3.13.0-32-generic Error! Bad return status for module build on kernel: 3.13.0-32-generic (x86_64) Consult /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/make.log for more information. The contain of the make.log file is the following: DKMS make.log for lttng-modules-2.6.x+stable+bzr727+pack22+201504291801~ubuntu12.04.1 for kernel 3.13.0-32-generic (x86_64) Thu May 14 15:00:16 EDT 2015 make: Entering directory `/usr/src/linux-headers-3.13.0-32-generic' /bin/sh: 1: /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/abi-debian-version.sh: not found /bin/sh: 1: /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/abi-debian-version.sh: not found CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-ring-buffer-client-discard.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-ring-buffer-client-overwrite.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-ring-buffer-metadata-client.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-ring-buffer-client-mmap-discard.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-ring-buffer-client-mmap-overwrite.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-ring-buffer-metadata-mmap-client.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-statedump-impl.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/wrapper/irqdesc.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/wrapper/fdtable.o CC [M] /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-events.o In file included from /var/lib/dkms/lttng-modules/2. 6.x+stable+bzr727+pack22+201504291801~ubuntu12.04.1/ build/lttng-events.c:27:0: /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/wrapper/page_alloc.h:36:58: error: operator '+' has no right operand make[1]: *** [/var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+ 201504291801~ubuntu12.04.1/build/lttng-events.o] Error 1 make: *** [_module_/var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+ pack22+201504291801~ubuntu12.04.1/build] Error 2 make: Leaving directory `/usr/src/linux-headers-3.13.0-32-generic' We know that "abi-debian-version.sh" isn't found and that might be the cause of our problem but it is supposed to be in the package... In addition we tried to include manually this file but it didn't work. Thanks again for helping me out. -Francis R