Chapter 18. Desktop

The vmware video driver for the X11 window system misses certain features related to multi-display support. As a consequence, Red Hat Enterprise Linux 6 guests running on VMware cannot correctly use multiple displays and only single-display support is available.

Please contact Red Hat support for test packages if you require multi-display support. (BZ#1320480)

If the screen rotation is changed inside a virtual machine in VMWare 11 or VMWare 12, the pointer movement remains unchanged. This only happens when the xorg-x11-drv-vmware driver is used, which initializes an absolute-axis device rather than a relative-axis device. The pointer does not follow the expected path because the driver is still mapping to the original coordinate system. To work around this problem, it it necessary to manually rotate the device, for example by running the following command:

xinput set-prop "ImPS/2 Generic Wheel Mouse" "Coordinate Transformation Matrix" 0 -1 1 1 0 0 0 0 1

Note that the command above is only an example. In general, the matrix needs to be adjusted depending on the specific scenario. Once the matrix is applied, pointer movement matches the rotation of the screen. (BZ#1322712, BZ#1318340)

A bug in the Xorg server can, under rare circumstances, cause graphics to be rendered incorrectly if using the Radeon or Nouveau graphics device driver. For example, the Thunderbird message pane can be displayed incorrectly.

For Nouveau, as a workaround, add the WrappedFB option to the xorg.conf file as follows:

Section "Device"
    Identifier "nouveau-device"
    Driver "nouveau"
    Option "WrappedFB" "true"
EndSection

This workaround avoids the faulty logic in the X server, and the Thunderbird message pane will be displayed correctly. (BZ#1076595)