Bug 537441 - [HiDPI][GTK3] Black bands are still visible in Eclipse UI on x2 display
Summary: [HiDPI][GTK3] Black bands are still visible in Eclipse UI on x2 display
Status: NEW
Alias: None
Product: Platform
Classification: Eclipse Project
Component: SWT (show other bugs)
Version: 4.9   Edit
Hardware: PC Linux
: P3 normal (vote)
Target Milestone: ---   Edit
Assignee: Sravan Kumar Lakkimsetti CLA
QA Contact:
URL:
Whiteboard:
Keywords: triaged
Depends on: 535123
Blocks:
  Show dependency tree
 
Reported: 2018-07-27 05:22 EDT by Peter Severin CLA
Modified: 2020-09-12 05:02 EDT (History)
5 users (show)

See Also:

Attachments
Black bands in form editors on Ubuntu 18.04 with x2 scaling (30.30 KB, image/png)
2018-07-27 05:22 EDT, Peter Severin CLA 		no flags Details
Black bands in form editors with Eclipse 2018-12 (144.25 KB, image/png)
2019-02-04 03:15 EST, Peter Severin CLA 		no flags Details
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Description Peter Severin CLA 2018-07-27 05:22:49 EDT 
Created attachment 275153 [details]
Black bands in form editors on Ubuntu 18.04 with x2 scaling

This is a followup to Bug 535123 which was fixed, but I still see black bands artifacts on latest Eclipse 4.9, although in different parts of Eclipse IDE, when running on Ubuntu 18.04 with x2 scaling. See attached screenshot.

To reproduce the bug just open a form-based editor such as plugin/manifest editor for a plugin. The header appears with black bands. I've also noticed that if you switch tabs (in the editor, or at higher level) - black bands go away.
Comment 1 Peter Severin CLA 2018-07-27 05:26:36 EDT 
This bug also exists in Eclipse 4.8 so the fix should be backported if possible.
Comment 2 Sravan Kumar Lakkimsetti CLA 2018-07-31 00:05:48 EDT 
Can you please let us know the following details

1. OS and version Ubuntu 18.04 
2. Using GTK3 or GTK2
3. GTK version
4. Windowing backend X11 or wayland
5. Window manager Gnome, plasma, i3 etc.
Comment 3 Peter Severin CLA 2018-07-31 01:26:30 EDT 
I'm testing with the default installation of Ubuntu 18.04. These are the configuration details:

org.eclipse.swt.internal.deviceZoom=200
org.eclipse.swt.internal.gdk.backend=x11
org.eclipse.swt.internal.gtk.theme=Ambiance
org.eclipse.swt.internal.gtk.version=3.22.30
Comment 4 Eric Williams CLA 2019-02-01 14:01:42 EST 
Peter, do you still experience this one?
Comment 5 Peter Severin CLA 2019-02-04 03:15:19 EST 
Created attachment 277419 [details]
Black bands in form editors with Eclipse 2018-12

I still see this issue with the latest Eclipse 2018-12. See the attached screenshot.
Comment 6 Peter Severin CLA 2019-02-04 03:22:38 EST 
I've also tried the 4.11M1 version and the issue is present there too.
Comment 7 Sravan Kumar Lakkimsetti CLA 2019-02-04 03:27:43 EST 
Could you please let us know if you see these black bands with X11 backend. you X11 backend during the login screen. In the login screen please select gnome on Xorg as session.
Comment 8 Eric Williams CLA 2019-02-04 09:38:02 EST 
(In reply to Sravan Kumar Lakkimsetti from comment #7)
> Could you please let us know if you see these black bands with X11 backend.
> you X11 backend during the login screen. In the login screen please select
> gnome on Xorg as session.

By the looks of comment 3 this is happening on X11.
Comment 9 Peter Severin CLA 2019-02-04 15:05:10 EST 
I've checked the configuration once more and it looks like the backend is x11:
org.eclipse.swt.internal.gdk.backend=x11
Comment 10 Peter de Kraker CLA 2020-09-08 10:13:24 EDT 
Having this exact same behaviour on a x2 scaling in Ubuntu 20.04 with Eclipse 2020-06.