Xpra: Ticket #2302: xpra-shadow viewport is leaking again

e.g. log from attachment/ticket/2250/display-%253A0.log.

See the attached images: bot/right of :0.0 is leaking image from :0.1 (:0.0 is smaller than :0.[12] monitors), bot/right of :0.1 leaks Alpha channel (no bigger display) / black (no idea why)

shadow is attached with --desktop-scaling=0.75 --opengl=no

Fri, 17 May 2019 09:08:46 GMT - stdedos: attachment set

attachment set to Xpra_cmd-shadow-0-bot_2019-05-17_10-38-17.png

Fri, 17 May 2019 09:08:52 GMT - stdedos: attachment set

attachment set to Xpra_cmd-shadow-0-right_2019-05-17_10-36-57.png

Fri, 17 May 2019 09:08:58 GMT - stdedos: attachment set

attachment set to Xpra_cmd-shadow-1-bot_2019-05-17_10-37-42.png

Fri, 17 May 2019 09:09:04 GMT - stdedos: attachment set

attachment set to Xpra_cmd-shadow-1-right_2019-05-17_10-37-27.png

Fri, 17 May 2019 09:11:17 GMT - Antoine Martin: owner, description changed

owner changed from Antoine Martin to stdedos
description modified (diff)

Sorry, but I have no idea what I am looking at in those screenshots...

Does it still occur with opengl=yes? With desktop-scaling=1?

Fri, 17 May 2019 10:47:19 GMT - stdedos: attachment set

attachment set to Xpra_cmd_2019-05-17_13-43-55.png

no opengl=no, no desktop-scaling=0.75

Fri, 17 May 2019 10:59:41 GMT - stdedos:

Replying to Antoine Martin:

Sorry, but I have no idea what I am looking at in those screenshots...

It's the right side, and the bottom side of the xpra shadow windows :0.0 and :0.1

Does it still occur with opengl=yes? With desktop-scaling=1?

Yes.

Now I have attached something visually more understandable probably (still windows :0.0 and :0.1)

Here is the command line (I canceled auth, but it's still the same):

Xpra-Python3_2.5.2-r22633\xpra_cmd" attach ssh://user@ip/0
error:
constructFunction() got an unexpected keyword argument 'force_extension'
2019-05-17 13:47:30,976 Xpra GTK3 client version 2.5.2-r22633 32-bit
2019-05-17 13:47:30,978  running on Microsoft Windows 10
2019-05-17 13:47:31,007 32-bit builds do not support webcam forwarding
2019-05-17 13:47:31,794 GStreamer version 1.14.4 for Python 3.7.3 32-bit
2019-05-17 13:47:32,074 OpenGL_accelerate module loaded
2019-05-17 13:47:32,103 Using accelerated ArrayDatatype
2019-05-17 13:47:32,248 Error loading OpenGL support:
2019-05-17 13:47:32,249  constructFunction() got an unexpected keyword argument 'force_extension'
2019-05-17 13:47:32,566  keyboard settings: layout=us
2019-05-17 13:47:32,569  desktop size is 1600x900 with 1 screen:
2019-05-17 13:47:32,569   Default (423x238 mm - DPI: 96x96) workarea: 1600x860
2019-05-17 13:47:32,570     (Standard monitor types) Generic PnP Monitor (309x174 mm - DPI: 131x131)
2019-05-17 13:47:34,116 Error: failed to receive anything, not an xpra server?
2019-05-17 13:47:34,117   could also be the wrong protocol, username, password or port
2019-05-17 13:47:34,117   or the session was not found
2019-05-17 13:47:34,117   or maybe this server does not support 'unknown' compression or 'rencode' packet encoding?
2019-05-17 13:47:34,118 Connection lost
Press any key to continue . . .

Thu, 13 Jun 2019 16:36:21 GMT - Antoine Martin:

I am unable to use virtualbox to test with dual displays. (works fine with mswindows guests - sigh)

Can you post the client's -d geometry debug output?

Wed, 19 Jun 2019 09:43:39 GMT - stdedos:

blocked-by: #2308

Mon, 05 Aug 2019 10:49:53 GMT - Antoine Martin:

What is the exact geometry of those two displays? It wouldn't hurt to have the shadow server log.

Mon, 05 Aug 2019 15:30:25 GMT - stdedos:

I am not sure what is missing:

11	2019-05-17 10:55:14,348  running with pid 19838 on Linux Ubuntu 16.04 xenial[0m
12	2019-05-17 10:55:14,352  on display ':0' of size 5520x1080[0m
13	2019-05-17 10:55:14,352  with 3 monitors:[0m
14	2019-05-17 10:55:14,352   0                1680x1050 at    0,30  [0m
15	2019-05-17 10:55:14,352   1                1920x1080 at 1680,0   [0m
16	2019-05-17 10:55:14,352   2                1920x1080 at 3600,0   [0m
17	2019-05-17 10:55:14,359 xpra is ready.[0m

Unless that's not the geometry.

I am on vacation these days, so I have no access to the computers involved. There was also a "brightness" issue while using OpenGL (on the same computers), so I didn't have time to clean up diagnostics for this bug.

I'll keep this as unread in my e-mail and report the server log when I return back.

Mon, 05 Aug 2019 16:26:36 GMT - Antoine Martin: owner, status changed

owner changed from stdedos to Antoine Martin
status changed from new to assigned

I am not sure what is missing:

Sorry. Nothing! (I didn't see it)

Thu, 08 Aug 2019 10:18:48 GMT - Antoine Martin: owner, status changed

owner changed from Antoine Martin to stdedos
status changed from assigned to new

I cannot reproduce this now that virtualbox is allowing me to configure funky virtual display setups. Can you reproduce this with virtualbox or something else I can replicate here?

Tue, 27 Aug 2019 12:44:08 GMT - stdedos: status changed; resolution set

status changed from new to closed
resolution set to fixed

It seems pretty solid to me now

Verified in:

$ xpra --version
xpra for python 2.7 is not installed
 retrying with python3
xpra v3.0-r23575
$ lsb_release -rd
Description:	Ubuntu 16.04.6 LTS
Release:	16.04

and

Client: Win10/Xpra-Python3-x86_64_3.0-r23250

Sat, 23 Jan 2021 05:47:39 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2302