Bug 5290 - Resizing to make the the rdp session larger doesn't work on windows 2012 and later
Summary: Resizing to make the the rdp session larger doesn't work on windows 2012 and ...
Status: CLOSED FIXED
Alias: None
Product: ThinLinc
Classification: Unclassified
Component: | rdesktop (deprecated) (show other bugs)
Version: trunk
Hardware: PC Unknown
: P2 Normal
Target Milestone: 4.9.0
Assignee: Henrik Andersson
URL:
Keywords: relnotes, samuel_tester
: 6072 (view as bug list)
Depends on:
Blocks: 6096
  Show dependency tree / graph
 
Reported: 2014-10-09 16:08 CEST by Samuel Mannehed
Modified: 2017-10-02 10:11 CEST (History)
1 user (show)

See Also:
Acceptance Criteria:

Attachments
Video showing the issue (3.89 MB, video/webm)
2014-10-14 11:05 CEST, Samuel Mannehed 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Description Samuel Mannehed cendio 2014-10-09 16:08:37 CEST 
When resizing sometimes the new parts of the screen becomes black. Seems to only happen when resizing to a bigger resolution than before. The windows desktop is resized but it seems like rdesktop isn't getting updates for the increased area. Mouse clicks work in the black areas.

When this happens it seems like the background image breaks as well (the background becomes black).

Happens on both Windows 2012 R2 Server and 2012 non-R2 Server.

Does not happen on Windows 2008 R2 Server.
Comment 2 Samuel Mannehed cendio 2014-10-14 11:05:25 CEST 
Created attachment 576 [details]
Video showing the issue
Comment 3 Henrik Andersson cendio 2015-09-15 14:38:37 CEST 
This [1] upstream commit, might fix this bug. Reason being that on a resize the clipping window is not reset to the new window size.

[1] https://github.com/rdesktop/rdesktop/commit/c843a3
Comment 4 Samuel Mannehed cendio 2016-10-31 10:03:07 CET 
*** Bug 6072 has been marked as a duplicate of this bug. ***
Comment 5 Samuel Mannehed cendio 2016-10-31 10:20:37 CET 
(In reply to comment #3)
> This [1] upstream commit, might fix this bug. Reason being that on a resize the
> clipping window is not reset to the new window size.
> 
> [1] https://github.com/rdesktop/rdesktop/commit/c843a3

Unfortunately, this doesn't help.
Comment 6 Samuel Mannehed cendio 2016-10-31 10:26:55 CET 
The bug is consistently reproducible when trying to increase the size of the session:

1. Login to a Windows 2012 session using ThinLinc and "rdesktop -f"
2. Resize the window to make it bigger
3. The new area which was added is black and does not get updates

---

Have tested 2012r2 without updates, fully updated and with several states in between these two, this bug is not related to Windows Updates.

The bug exists with rdesktop upstream, with rdesktop in ThinLinc 4.7.0 and with rdesktop in ThinLinc 4.2.0.

Moving from 'MediumPrio' to '---' for discussion.
Comment 7 Henrik Andersson cendio 2017-05-11 09:12:17 CEST 
A user of rdesktop also found this bug and made a patch, see https://github.com/rdesktop/rdesktop/issues/117
Comment 8 Henrik Andersson cendio 2017-05-15 15:02:56 CEST 
Investigate a bit in this issue due to the upstream report. A fix is
committed upstream (05689db) and it works good. Tested using ThinLinc
and Windows 2012r2 server.
Comment 9 Henrik Andersson cendio 2017-09-05 07:37:58 CEST 
This is also seen on Windows 2016 while testing it to be supported. I haven't tested the mentioned fix upstream in comment #8.
Comment 10 Henrik Andersson cendio 2017-09-05 09:40:37 CEST 
I did a test using rdesktop from upstream which includes the mentioned fix in comment #8 agains Windows 2016, which solves the problem with the broken resize.
Comment 11 Pierre Ossman cendio 2017-09-26 12:47:07 CEST 
Fixed via vendor drop in r32760.
Comment 13 Samuel Mannehed cendio 2017-09-26 17:08:49 CEST 
Verified that the problem is fixed on Windows 2008 R2 and Windows 2016. Will also test 2012.
Comment 14 Samuel Mannehed cendio 2017-10-02 10:11:45 CEST 
Verified that the problem is fixed on Windows 2012 R2.
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