So it turn out when I rebuild the package for 4.2.0-27 I already see that glitches occurring in that specific kernel version. So it look like there is difference between the package I built and the official package or I screwed up the build process?
Here is what I did, I have to say the wik page you linked was very verbose. I know what git bisect works, however I don't how to build a Ubuntu kernel package (kteam-tools produced some errors for me) I took the steps from https://wiki.ubuntu.com/KernelTeam/GitKernelBuild#Using_Ubuntu_Kernel_Configuration Can you check if those steps should produce a correct package? sudo apt-get install git build-essential kernel-package fakeroot libncurses5-dev libssl-dev ccache --no-install-recommends # because of texlive git clone git://kernel.ubuntu.com/ubuntu/ubuntu-wily.git cd ubuntu-wily/ cp -a /usr/share/kernel-package ubuntu-package cp debian/control-scripts/{postinst,postrm,preinst,prerm} ubuntu-package/pkg/image/ cp debian/control-scripts/headers-postinst ubuntu-package/pkg/headers/ # set up ccache because I thought this will save time while bisecting -- however mostly cache misses vim ~/.bashrc if [ -d /usr/lib/ccache ]; then export PATH=/usr/lib/ccache:"${PATH}" export CCACHE_NLEVELS=5 fi ccache -M 10G cp /boot/config-4.2.0-27-generic .config make localmodconfig # because building all modules takes forever make oldconfig CONCURRENCY_LEVEL=`getconf _NPROCESSORS_ONLN` fakeroot make-kpkg --initrd --append-to-version=-custom --overlay-dir=$(pwd)/ubuntu-package kernel_image kernel_headers cd .. dpkg -i *.deb #git tag --list #git bisect start #git bisect good Ubuntu-4.2.0-27.32 #git bisect bad Ubuntu-4.2.0-30.36 # Here I did noticed that after the 6 commits all commits where bad. Then I checked the assumption that "Ubuntu-4.2.0-27.32" was good, it was not -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1550779 Title: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
