Printing a blank page with libreoffice on Lubuntu 20.04

[Reiner]

Hello maintainer,

Printing from libreoffice on Lubuntu 20.04 allways produces a blank page. After removing the package libreoffice-qt5 it works. To reproducing the bug, you do not need to install a real printer. Having the package printer-driver-cups-pdf install is enough.

Release Lubuntu 20.04.1 LTS
libreoffice-qt5 1:6.4.5-0ubuntu0.20.04.1

Regards
Reiner

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Leó Kolbeinsson (leok)]

Tested on Lubuntu 20.04.1 LTS and Groovy Lubuntu daily ISO 20200930 and can confirm this.

As a workaround run in terminal:

sudo apt install libreoffice-kf5

followed by:

sudo apt remove libreoffice-qt5

I refer to https://ask.libreoffice.org/en/question/242188/cannot-print-anything-exporting-to-pdf-produces-blank-pdf-lubuntu-2004/

this needs further testing as there maybe adverse effects which I am not aware of.

[Heather Ellsworth (hellsworth)]

Thank you so much for taking time to report this issue and make Ubuntu better!
I understand that this is inconvenient however there is a workaround so lowering the priority since users have a way to temporarily fix the issue.

[Leó Kolbeinsson (leok)]

Looked further into this and the solution is 2 add these 2 lines to the LXQt session settings
environmental variables

Variable name Value

SAL_USE_VCLPLUGIN qt5
SAL_VCL_QT5_USE_CAIRO true