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Description of problem:
When using x0vncserver with the motif window manager, mouse cursor is observed to exhibit ghosting behavior.
When MIT-SHM is enabled, this is continuous ghosting. When it is disabled, the ghosting occurs only when the mouse is clicked (either buttons).
Version-Release number of selected component (if applicable):
motif-2.3.4-16.el8.x86_64
tigervnc-server-1.11.0-6.el8.x86_64
tigervnc-server-minimal-1.11.0-6.el8.x86_64
xorg-x11-server-Xorg-1.20.10-1.el8.x86_64
How reproducible:
Customer is able to consistently reproduce the behavior.
Steps to Reproduce:
1. Configure system to use motif on display :0.
2. Start x0vncserver (in one test using -UseSHM 0)
3. Observe behavior of mouse cursor on screen.
Actual results:
When using MIT-SHM:
Consistent mouse cursor ghosting.
When MIT-SHM is disabled:
Ghosting occurs when clicking is performed.
Expected results:
Proper mouse functionality with no ghosting behavior observed.
Can you try whether this is fixed with Tigervnc 1.12.0 we have now in RHEL 8.6? I can see some upstream fixes that could be related to this issue.
Like: https://github.com/TigerVNC/tigervnc/commit/fb561eb321b36dcf13932c903047ce08e55d67d5
Also, the bug description says it's one monitor setup, but with one monitor setup such behavior wouldn't happen and reading the customer issue this is a X11 with zaphod mode, using two screens 0.0 and 0.1.
Hello,
From the customer's testing, with version 1.12.0, they were still observing the behavior. The customer also tested with the MIT-SHM extension disabled as well.
Brandon Clark, RHCE
Red Hat Global Support Services
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (tigervnc bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:7575