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Published 20 hours ago • verified publisher icon talkgo

Screen capture does not work with OpenJDK on Wayland

Open RetGal opened this issue 5 years ago • 10 comments

Screen capture does not work on systems using Wayland display server in combination with OpenJDK. (Which is the default on Debian Buster)

To Reproduce

  1. Start Dayon Assisted within a session running with Wayland.
  2. Connect to the Assistand running on whatever system.
  3. Only a plain black screen is transmitted to the Assistant.

Workaround

  • Use Oracle JDK/JRE instead
  • Or start a X.Org server instead: Logout > see the login screen > click the gear icon > select Xorg > login again.

Affected:

  • OS: Any linux using Wayland and OpenJDK (for example Debian 10 aka Buster)
  • Version: Any

RetGal avatar Jan 04 '20 15:01 RetGal

read the comments here: https://www.reddit.com/r/gnome/comments/frv4sf/conferencing_on_wayland/

I believe pipewire is needed

idnovic avatar Apr 04 '20 04:04 idnovic

@idnovic thanks for your input, i'll definitely have a closer look at it!

RetGal avatar Apr 05 '20 13:04 RetGal

@idnovic Unfortunately pipewire doesn't solve the problem. It's indeed a bug/missing feature of the OpenJDK, as with Oracles implementation the screen capturing on Wayland works as expected. It's a pity, that only OpenJDK developers are allowed to open issues/bugs on their project..

RetGal avatar May 09 '20 05:05 RetGal

okay I see. Is it working with adoptjdk? https://adoptopenjdk.net/?variant=openjdk8&jvmVariant=openj9

idnovic avatar May 09 '20 12:05 idnovic

@idnovic Thanks for your suggestion. I tested it with the LTS (OpenJDK11U-jdk_x64_linux_openj9_11.0.7_10) and with the latest version (OpenJDK14U-jdk_x64_linux_hotspot_14.0.1_7) but neither of them works. It's definitely an OpenJDK issue

RetGal avatar May 10 '20 12:05 RetGal

Is this still an issue? any news on this?

idnovic avatar Mar 11 '22 00:03 idnovic

Hi @idnovic Yes, it's still an issue. I hope that one day the openJDK developers will finally fix their Wayland screen capture implementation :)

RetGal avatar Mar 12 '22 13:03 RetGal

Maybe add upstream tag and workaround to show that error isn't relative to this project. We will wait more time on that issue on openJDK team ;/ Any mention tag available to show them where is problem?

@idnovic Unfortunately pipewire doesn't solve the problem. It's indeed a bug/missing feature of the OpenJDK, as with Oracles implementation the screen capturing on Wayland works as expected. It's a pity, that only OpenJDK developers are allowed to open issues/bugs on their project..

Triloworld avatar May 07 '22 18:05 Triloworld

Hooray! It looks like OpenJDK 21 will finally support screen capture on Wayland: bugs.openjdk.org/browse/JDK-8280982

RetGal avatar Sep 17 '23 16:09 RetGal