could not find or load the Qt platform plugin “wayland” in “”. #15677

1. 
   ghost commented at 4:43 pm on March 27, 2019: none

   Description The gui should start.

   Console output

   0[user@pc bitcoin-0.17.1]$ ./bin/bitcoin-qt 
   1This application failed to start because it could not find or load the Qt platform plugin "wayland"
   2in "".
   3
   4Available platform plugins are: xcb.
   5
   6Reinstalling the application may fix this problem.
   7Aborted (core dumped)
   

   Version

   0.17.1

   System

   Fedora Workstation 29 x64. GNOME shell.

   00.477051 tx=394718865 date='2019-03-25T11:52:11Z' progress=0.999999 cache=17.6MiB(130123txo) warning='37 of last 100 blocks have unexpected version'
   12019-03-25T12:00:20Z Pre-allocating up to position 0x300000 in rev01572.dat
   22019-03-25T12:00:21Z UpdateTip: new best=00000000000000000014211686fd587885582a85a17250137f8a64fdd0dfcaf8 height=568726 version=0x20000000 log2_work=90.477074 tx=394720217 date='2019-03-25T11:58:12Z' progress=0.999999 cache=18.1MiB(134539txo) warning='36 of last 100 blocks have unexpected version'
   32019-03-25T12:03:21Z GUI: The X11 connection broke (error 1). Did the X11 server die?
   

2. 
   promag commented at 4:49 pm on March 27, 2019: member

   Are you building from source?
3. 
   promag commented at 4:53 pm on March 27, 2019: member

   Try dnf install qt5-qtwayland.
4. 
   ghost commented at 5:04 pm on March 27, 2019: none

   @promag thanks but it says

   Package qt5-qtwayland-5.11.3-1.fc29.x86_64 is already installed.

5. 
   ghost commented at 5:06 pm on March 27, 2019: none

   maybe relevant

   0cat /usr/share/gnome/gnome-version.xml
   1<?xml version="1.0"?>
   2<gnome-version>
   3 <platform>3</platform>
   4 <minor>30</minor>
   5 <micro>2</micro>
   6 <distributor>GNOME.Org</distributor>
   7 <date>2019-02-05</date>
   8</gnome-version>
   

   0uname -a
   1Linux tree 5.0.3-200.fc29.x86_64 [#1](/bitcoin-bitcoin/1/) SMP Tue Mar 19 15:07:58 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
   

6. 
   ghost commented at 5:07 pm on March 27, 2019: none

   @promag I am not building from source. I’m using binaries bitcoin-0.17.1-x86_64-linux-gnu.tar.gz
7. MarcoFalke added the label GUI on Mar 27, 2019
8. 
   promag commented at 0:21 am on March 28, 2019: member

   Try running QT_QPA_PLATFORM="wayland;xcb" ./bin/bitcoin-qt.

   See https://blog.qt.io/blog/2018/05/29/whats-new-in-qt-5-11-for-the-wayland-platform-plugin/ section “Qt Wayland in official binaries”, especially the red text.

9. 
   ghost commented at 9:43 am on March 28, 2019: none

   Thanks that solves it! I’m using

   0qmake-qt5 --version
   1QMake version 3.1
   2Using Qt version 5.11.3 in /usr/lib64
   

   with QT_QPA_PLATFORM="wayland;xcb" ./bin/bitcoin-qt still gives the error

   0This application failed to start because it could not find or load the Qt platform plugin "wayland;xcb"
   1in "".
   

   but QT_QPA_PLATFORM="xcb" ./bin/bitcoin-qt fixes it.

10. 
    MarcoFalke commented at 12:53 pm on March 28, 2019: member

    This is a bug in gnome-shell+qt and there is nothing we can fix on our side, right?
11. 
    promag commented at 1:23 pm on March 28, 2019: member

    Right, but maybe mention this workaround somewhere?
12. MarcoFalke closed this on Apr 29, 2019

    ---

13. 
    hebasto commented at 10:01 am on August 5, 2021: member

    See #22631.
14. DrahtBot locked this on Aug 18, 2022

Contributors
ghost promag MarcoFalke hebasto

Labels
GUI