Recompile Linux Kernel of Ubuntu 18.04 with patch for Intel display drivers

Question

I'm running latest Ubuntu 18.04 with stock Linux kernel 4.15.0-23-generic and have a problem (HDMI is not working occasionally).

There is a related issue already: https://bugs.freedesktop.org/show_bug.cgi?id=105887

And here is the patch of the intel display driver as a diff fixing the problem: https://patchwork.freedesktop.org/patch/229363/

I would like to recompile my kernel / display driver with that patch and have some problems as I did not recompile anything Kernel related yet:

How do I get the exact Ubuntu Kernel source, including the intel display drivers so I can apply the patch above? What are the steps to recompile and install the modified Kernel / Kernel drivers into my system (with as as little configuration as necessary)?

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Managed to get the Kernel source related to Ubuntu 18.04:

git clone git://kernel.ubuntu.com/ubuntu/ubuntu-bionic.git

The patch from https://patchwork.freedesktop.org/patch/229363/ cannot be applied - seems its based on a different Kernel:

$ git apply --stat V2-drm-i915-glk-Add-Quirk-for-GLK-NUC-HDMI-port-issues..patch
 drivers/gpu/drm/i915/i915_drv.h      |    1 +
 drivers/gpu/drm/i915/intel_ddi.c     |    8 ++++++++
 drivers/gpu/drm/i915/intel_display.c |   19 +++++++++++++++++++
 3 files changed, 28 insertions(+)
gustavo /home/ifischer/src/ubuntu-bionic master [~]
$ git apply --check V2-drm-i915-glk-Add-Quirk-for-GLK-NUC-HDMI-port-issues..patch
error: patch failed: drivers/gpu/drm/i915/intel_ddi.c:1800
error: drivers/gpu/drm/i915/intel_ddi.c: patch does not applygit clone git://kernel.ubuntu.com/ubuntu/ubuntu-bionic.git

Answer 1

Solution I got from the related bug report: https://bugs.freedesktop.org/show_bug.cgi?id=105887

Install necessary packages for Kernel compilation and download Ubuntu Kernel patches:

sudo apt install git flex bison bc libssl-dev gawk libudev-dev ocl-icd-opencl-dev libpci-dev libelf-dev python2.7 libncurses-dev fakeroot kernel-wedge binfmt-support ksh lsscsi binfmt-support libpcre16-3 libpcre3-dev libpcre32-3 libpcrecpp0v5 libsepol1-dev libattr1-dev libblkid-dev libpcre16-3 libpcre3-dev libpcre32-3 libpcrecpp0v5 libselinux1-dev libsepol1-dev uuid-dev debugedit libarchive13 libdw1 liblua5.2-0 liblzo2-2 libnspr4 libnss3 librpm8 librpmbuild8 librpmio8 librpmsign8 rpm rpm-common rpm2cpio spl-dkms

git clone --depth 1 --single-branch --branch v4.17.2 git://git.launchpad.net/~ubuntu-kernel-test/ubuntu/+source/linux/+git/mainline-crack v4.17.2

cd v4.17.2
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.2/0001-base-packaging.patch
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.2/0002-UBUNTU-SAUCE-add-vmlinux.strip-to-BOOT_TARGETS1-on-p.patch
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.2/0003-UBUNTU-SAUCE-tools-hv-lsvmbus-add-manual-page.patch
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.2/0004-UBUNTU-SAUCE-no-up-disable-pie-when-gcc-has-it-enabl.patch
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.2/0005-debian-changelog.patch
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.2/0006-configs-based-on-Ubuntu-4.17.0-3.4.patch

Download the patch from https://patchwork.freedesktop.org/patch/229363/ and rename in i915.patch. Apply all patches:

patch -p1 < 0001-base-packaging.patch
patch -p1 < 0002-UBUNTU-SAUCE-add-vmlinux.strip-to-BOOT_TARGETS1-on-p.patch
patch -p1 < 0003-UBUNTU-SAUCE-tools-hv-lsvmbus-add-manual-page.patch
patch -p1 < 0004-UBUNTU-SAUCE-no-up-disable-pie-when-gcc-has-it-enabl.patch
patch -p1 < 0005-debian-changelog.patch
patch -p1 < 0006-configs-based-on-Ubuntu-4.17.0-3.4.patch
patch -p1 < i915.patch

Make Kernel config from current Kernel config:

yes "" | make oldconfig

Disable ZFS if it's not required:

Set do_zfs = false in debian.master/rules.d/amd64.mk

Build Kernel:

make deb-pkg
# find the debian package files first
dpkg -i $KERNEL_DEB_FILES

The drivers seem to be part of kernel-HEADER packages, so it should be sufficient to install these.

After installing the Kernel Debian packages, update Grub:

sudo update-grub

Set the new Default Kernel in Grub settings and update grub again:

sudo vim /etc/default/grub

My HDMI problems are gone now.