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common-issues.md

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Common issues

Make error Bad return status for module build on kernel...

While installing displaylink-debian, you might see an error similar to this one in the terminal output:

  Building module:
  cleaning build area...
  make -j8 KERNELRELEASE=5.10.0-23-amd64 all INCLUDEDIR=/lib/modules/5.10.0-23-amd64/build/include KVERSION=5.10.0-23-amd64 DKMS_BUILD=1...(bad exit status: 2)
  Error! Bad return status for module build on kernel: 5.10.0-23-amd64 (x86_64)
  Consult /var/lib/dkms/evdi/1.13.1/build/make.log for more information.

Prerequisite:

  • displaylink must not be installed
  • libssl-dev must be installed

Try this procedure to fix the previous error:

sudo apt install libssl-dev
cd /usr/src/linux-headers-$(uname -r)
sudo tar -xaf /usr/src/linux-source-$(uname -r | egrep -o '^[0-9]+\.[0-9]+').tar.xz --strip-components=1
sudo make oldconfig
sudo make prepare

Then install displaylink as usual:

sudo ./displaylink-debian.sh --install

More common issues

Most common Debian Jessie related issues:

  • systemctl status dlm.service failure
  • Glibc GLIBCXX_3.4.21 missing

Due to older version of libstdc++6 in Jessie, you need to download and install version from Stretch release. After package has been updated, run displaylink-debian and select "Re-install" option.

Reference: #42

Should you experience problems with the display either remaining black, only showing mouse pointer or a frozen image of your main screen, then this could be due to Intel graphics driver interfering with displaylink.

Reference: #68

syntax error near unexpected token `newline'...

If you just downloaded the script and tried to execute it, you might get the following error:

$ ./displaylink-debian.sh
./displaylink-debian.sh: line 1: syntax error near unexpected token `newline'
./displaylink-debian.sh: line 1: `<!DOCTYPE html>'

The line number might be different.

Solution:

Download the script again as a ZIP file: https://github.com/AdnanHodzic/displaylink-debian/archive/master.zip

Extract it and run it:

unzip displaylink-debian-master.zip
cd displaylink-debian-master
sudo ./displaylink-debian.sh

References: #111, #102, #89, #65

Having a different problem?

When submitting a new issue, include debug information by running: sudo ./displaylink-debian.sh --debug

Monitoring for errors

  • Monitor dmesg | grep Display output while plugging in Displaylink
  • Monitor /var/log/displaylink/DisplayLinkManager.log file