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Description of problem: 
Mouse cursor out of sync when using Xorg VNC module with xorg-x11-drv-ati

Version-Release number of selected component (if applicable):


How reproducible: Always but only on HP t620 thinclient


Steps to Reproduce:
1. Configure Xorg VNC module
2. Boot the system with xorg-x11-drv-ati driver
3. Connect to VNC module

Actual results: Cannot move mouse to top left corner of the screen


Expected results: Should be able to move mouse to all the corners


Additional info:

When using Xorg VNC module on an HP t620 thinclient, mouse cursor gets out of sync when using physical mouse. It won't reach left edge of the physical screen.
It works OK when we connect through VNC, though.

This issue is only seen on HP t620 thinclient RHEL6.8 system

When the system is booted with nomodeset RHEL6.8 works fine

Not able to see on RHEL6.7 as well (with ati driver)

A quick search shows that issue is resolved in upstream ati driver

https://github.com/TigerVNC/tigervnc/issues/309

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, 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-2018:1899