Arch Linux User Repository

Thanks walwe, your instructions worked for me. Here's the resulting PKGBUILD.

Download this patch first: https://crazy.dev.frugalware.org/all-in-one-kernel-5.4-and-5.5-test.patch

Then use this PKGBUILD

# Maintainer: mwawrzyniak
# Contributor: PlusMinus

pkgname=evdi
pkgver=1.6.4
pkgrel=2
pkgdesc="A Linux® kernel module that enables management of multiple screens."
arch=('i686' 'x86_64')
url="https://github.com/DisplayLink/evdi"
license=('GPL')
groups=()
depends=(dkms libdrm)
makedepends=()
optdepends=()
provides=()
conflicts=()
replaces=()
backup=()
options=()
install=$pkgname.install
changelog=$pkgname.Changelog
source=($pkgname-$pkgver-$pkgrel.tar.gz::https://github.com/DisplayLink/evdi/archive/v$pkgver.tar.gz
        all-in-one-kernel-5.4-and-5.5-test.patch)
noextract=()
md5sums=('67d8ab1bb7a4ca013c5435df42ace5dc'
         'e44c3f9cd4e935d24b91ccc4cc993ce1')

prepare() {
  cd "$pkgname-$pkgver"
  local src
  for src in "${source[@]}"; do
    src="${src%%::*}"
    src="${src##*/}"
    [[ $src = *.patch ]] || continue
    patch -Np1 < "../$src"
  done
}

build() {
# We only need to build the library in this step, dkms will build the module
cd "$pkgname-$pkgver/library"

make
}

package() {
# Predfine some target folders
SRCDIR="$pkgdir/usr/src/$pkgname-$pkgver"   # This one is needed for dkms
LIBNAME=lib$pkgname

cd "$pkgname-$pkgver"

install -D -m 755 library/$LIBNAME.so.$pkgver $pkgdir/usr/lib/$LIBNAME.so

install -d $SRCDIR
install -D -m 755 module/* $SRCDIR
}

I can compile by applying the following changes, BUT the performance using displaylink is terrible beyond usable.

• Add patch mentioned here to PKGBUILD: https://github.com/DisplayLink/evdi/issues/185#issuecomment-583393014
• Remove relro.patch evdi-1.6.4-kernel-5.4.x.patch from PKGBUILD
• Add pkg version to install command in PKGBUILD line 55: install -D -m 755 library/$LIBNAME.so.$pkgver $pkgdir/usr/lib/$LIBNAME.so

On Manjaro, facing exactly the same problem as this. https://forum.manjaro.org/t/displaylink-driver-and-evdi-issues-headers-and-kernel-module-tree/126130
I applied the patch, but still can't install it.

doniom The patch data from "kaipee2 commented on 2020-02-19 11:17" does work Replace the information in the PKGBUILD with the one from the post.

Hello I use arch and have after updated too the new kernel, this error message:

Building module: cleaning build area... make -j8 KERNELRELEASE=5.5.7-arch1-1 all INCLUDEDIR=/lib/modules/5.5.7-arch1-1/build/include KVERSION=5.5.7-arch1-1 DKMS_BUILD=1...(bad exit status: 2) Error! Bad return status for module build on kernel: 5.5.7-arch1-1 (x86_64) Consult /var/lib/dkms/evdi/1.6.4/build/make.log for more information. Fehler: Befehl konnte nicht korrekt ausgeführt werden

/var/lib/dkms/evdi/1.6.4/build/evdi_drv.c:11:10: schwerwiegender Fehler: drm/drmP.h: Datei oder Verzeichnis nicht gefunden 11 | #include <drm/drmP.h> | ^~~~~~~~~~~~

extra/libdrm 2.4.100-1 (245.5 KiB 943.0 KiB) (Installed) aur/evdi 1.6.4-2 (+25 1.40%) (Installed)

Not sure what you're talking about. I just clicked the link I posted and it was accessible to me.

Anyway, I tried to post the PKGBUILD code, but I couldn't figure out the markdown to include it inline like you did. Can you post a link that explains how?

@darose your site is no longer accessible. Can we refrain from hosting the code outside of the AUR site and post the patched PKGBUILD in wrapped code here?

PKGBUILD from upstream kernel 5.5 patch (https://github.com/DisplayLink/evdi/issues/185#issuecomment-581985775)

# Maintainer: mwawrzyniak
# Contributor: PlusMinus

pkgname=evdi
pkgver=1.6.4
pkgrel=2
pkgdesc="A Linux® kernel module that enables management of multiple screens."
arch=('i686' 'x86_64')
url="https://github.com/DisplayLink/evdi"
license=('GPL')
groups=()
depends=(dkms libdrm)
makedepends=()
optdepends=()
provides=()
conflicts=()
replaces=()
backup=()
options=()
install=$pkgname.install
changelog=$pkgname.Changelog
source=($pkgname-$pkgver-$pkgrel.tar.gz::https://github.com/DisplayLink/evdi/archive/v$pkgver.tar.gz
        relro.patch
        evdi-1.6.4-kernel-5.4.x.patch
        kernel-5.5-test.patch::https://gitweb.frugalware.org/frugalware-current/raw/master/source/lib-extra/evdi/kernel-5.5-test.patch)
noextract=()
md5sums=('67d8ab1bb7a4ca013c5435df42ace5dc'
         '05e64dd295a66c030139d0c8f6f7013b'
         '1938ebead0b2c64f11591970a554fffc'
         '8df8c8c77980560679425435c7d74341')

prepare() {
  cd "$pkgname-$pkgver"
  local src
  for src in "${source[@]}"; do
    src="${src%%::*}"
    src="${src##*/}"
    [[ $src = *.patch ]] || continue
    patch -Np1 < "../$src"
  done
}

build() {
# We only need to build the library in this step, dkms will build the module
cd "$pkgname-$pkgver/library"

make
}

package() {
# Predfine some target folders
SRCDIR="$pkgdir/usr/src/$pkgname-$pkgver"   # This one is needed for dkms
LIBNAME=lib$pkgname

cd "$pkgname-$pkgver"

install -D -m 755 library/$LIBNAME.so $pkgdir/usr/lib/$LIBNAME.so

install -d $SRCDIR
install -D -m 755 module/* $SRCDIR
}

@darose thanks man a lot. This worked for me too.

@exup: This PKGBUILD worked for me: http://darose.net/evdi.PKGBUILD