[JENKINS-15627] Using MacOS slave in 1.487 - Can't connect to window server - not enough permissions

[timja]

After 1.487 update from 1.486, MacOS slave refused to run. It was configured to run through SSH.

Log messages shown are attached, main lines are:

java.io.IOException: Remote call on iOS failed
Caused by: java.lang.InternalError: Can't connect to window server - not enough permissions.

If I log in as this user on the Mac, slave works well: it has window server when the user is logged in. But as soon as the user logs out - slave falls offline with message

ERROR: Connection terminated
java.io.IOException: Unexpected termination of the channel

The issue resolves completely if I specify -Djava.awt.headless=true in JVM options in "nodes" configuration.
But it is surely a regression as compared to 1.486.

(wasn't sure what component to assign this issue to, so selected everything with "slave" word on it. Sorry for that if it's an inconvenience)

UPD: Meant "MacOS", not iOS

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Originally reported by andrey_regentov, imported from: Using MacOS slave in 1.487 - Can't connect to window server - not enough permissions

• status: Open
• priority: Major
• resolution: Unresolved
• imported: 2022/01/10

[timja]

ndirons:

Thanks for the workaround. We saw the same failure after updating from 1.486 to 1.490. Our 10.7.5 build nodes were dead in the water.

[timja]

yannj:

Workaround : add JVM options -Djava.awt.headless=true , this disabled the use of ui

[timja]

pickgr1:

Thanks for the work-around. Unfortunately, this appears to affect the LTS release line as well.

[timja]

dallysoft:

Thanks for the work around.

[timja]

oleg_nenashev:

Does this issue appear in newest Jenkins versions?

[timja]

marscher:

also affects Jenkins ver. 1.584

[timja]

lata:

thanks for the workaround Andrey, it just saved our day.
Our Jenkins version: 1.533, Master on windows.
Issue seen with on Mac OS X 10.9 slave.