Zaproxy: zap displaying blank window on start. no errors (ubuntu / xubuntu)

[bryanbecker]

I've installed ZAP from the xubuntu 16.10 repo. I've tried directly running the jar, running zap.sh, and doing the same again but with the downloaded .gz package instead of installed from the repo. All with the same result:

A new, empty window pops up, then it just doesn't do anything.

Here's what the command line is showing:

> /usr/share/owasp-zap/zap.sh
Found Java version 1.8.0_131
Available memory: 7750 MB
Setting jvm heap size: -Xmx1937m
0 [main] INFO org.zaproxy.zap.GuiBootstrap  - OWASP ZAP 2.6.0 started 21/10/17 14:21:04

Here is the contents of ~/.ZAP/zap.log

2017-10-21 14:03:03,824 [main ] INFO  Constant - Copying defaults from /usr/share/owasp-zap/./xml/config.xml to /home/bryan/.ZAP/config.xml
2017-10-21 14:03:03,825 [main ] INFO  Constant - Creating directory /home/bryan/.ZAP/session
2017-10-21 14:03:03,825 [main ] INFO  Constant - Creating directory /home/bryan/.ZAP/dirbuster
2017-10-21 14:03:03,825 [main ] INFO  Constant - Creating directory /home/bryan/.ZAP/fuzzers
2017-10-21 14:03:03,825 [main ] INFO  Constant - Creating directory /home/bryan/.ZAP/plugin
2017-10-21 14:03:03,825 [main ] INFO  Constant - Creating directory: /home/bryan/.ZAP/filter
2017-10-21 14:03:03,923 [main ] INFO  Constant - Backing up config file to /home/bryan/.ZAP/config.xml.bak
2017-10-21 14:03:03,929 [main ] INFO  Constant - Upgraded from 1004000
2017-10-21 14:03:04,017 [main ] INFO  GuiBootstrap - OWASP ZAP 2.6.0 started 21/10/17 14:03:04
2017-10-21 14:06:58,716 [main ] INFO  GuiBootstrap - OWASP ZAP 2.6.0 started 21/10/17 14:06:58
2017-10-21 14:13:19,823 [main ] INFO  GuiBootstrap - OWASP ZAP 2.6.0 started 21/10/17 14:13:19
2017-10-21 14:18:34,968 [main ] INFO  GuiBootstrap - OWASP ZAP 2.6.0 started 21/10/17 14:18:34
2017-10-21 14:21:04,966 [main ] INFO  GuiBootstrap - OWASP ZAP 2.6.0 started 21/10/17 14:21:04

[bryanbecker]

I think this actually an issue with the window manager (see: https://superuser.com/questions/400766/netbeans-java-shows-empty-window-in-tiling-window-manager-awesome-wm)

For anyone else with this issue, setting the env var _JAVA_AWT_WM_NONREPARENTING=1 solved the issue for me

[kingthorin]

Thanks for letting us know

[thc202]

There's a FAQ entry for this issue https://github.com/zaproxy/zaproxy/wiki/FAQlinuxBlank (although the link was already outdated, now fixed)

[lock[bot]]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.