Linux Settings (Red Hat 9)

Note: The following settings are optimized for Standard Mouse mode only.

To configure KVM target servers running Linux^® (graphical user interface):

1. Configure the mouse settings:
   1. Choose Main Menu > Preferences > Mouse. The Mouse Preferences dialog appears.
   2. Click the Motion tab.
   3. Within the Speed group, set the Acceleration slider to the exact center.
   4. Within the Speed group, set the Sensitivity towards low.
   5. Within the Drag & Drop group, set the Threshold towards small.
   6. Close the Mouse Preferences dialog.

      Note: If these steps do not work, issue the xset mouse 1 1 command as described in the Linux command line instructions.

2. Configure the screen resolution:
   1. Choose Main Menu > System Settings > Display. The Display Settings dialog appears.
   2. From the Display tab, select a Resolution supported by the Dominion KSX.
   3. From the Advanced tab, verify that the Refresh Rate is supported by the Dominion KSX.

Note: Once connected to the target server, in many Linux graphical environments, the <Ctrl> <Alt> <+> command will change the video resolution, scrolling through all available resolutions that remain enabled in the XF86Config or /etc/X11/xorg.conf, depending on your X server distribution.

To configure KVM target servers running Linux (command line):

1. Set the mouse acceleration to exactly 1 and set the threshold to exactly 1. Enter this command: xset mouse 1 1. This should be set for execution upon login.
2. Ensure that each target server running Linux is using a resolution supported by the Dominion KSX at a standard VESA resolution and refresh rate.
3. Each Linux target server should also be set so the blanking times are within +/- 40% of VESA standard values:
   1. Go to the Xfree86 Configuration file XF86Config.
   2. Using a text editor, disable all non-Dominion KSX supported resolutions.
   3. Disable the virtual desktop feature (not supported by the Dominion KSX).
   4. Check blanking times (+/- 40% of VESA standard).
   5. Restart computer.

Note: If you change the video resolution, you must log off of the target server and log back in for the video settings to take effect.

Note for Red Hat 9 KVM Target Servers

If you are running Red Hat 9 on the target server using a USB CIM, and are experiencing problems with the keyboard and/or mouse, there is an additional configuration setting you can try.

Tip: You might have to perform these steps even after a fresh OS installation.

To configure Red Hat 9 servers using USB CIMs:

1. Locate the configuration file (usually /etc/modules.conf) in your system.
2. Using the editor of your choice, make sure that the alias usb-controller line in the modules.conf file is as follows:

   alias usb-controller usb-uhci

   Note: If there is another line using usb-uhci in the /etc/modules.conf file, it needs to be removed or commented out.

3. Save the file.
4. Reboot the system in order for the changes to take effect.