Lantronix Spider KVM Over IP Switch User Guide - Page 27

Mouse-to-Cursor Synchronization, Control Panel > Mouse > Pointer Options

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3: Installing the Spider Device  Windows Server 1. Select Control Panel > Display > Settings. Modify the screen resolution value as required. 2. Select Control Panel > Display > Settings > Advanced > Monitor. Modify the screen refresh rate. Because the server video card is driving the Spider device and not a monitor, a refresh rate higher than 60 Hz has no effect.  Linux Server 1. Edit the Xfree86 file "XF86Config" to disable formats that are not supported or not VESA standard timing. 2. Reboot is required. Notes:  Background wallpaper and desktop appearances do not have any particular limitations.  Microsoft Active Desktop and Linux virtual desktop are not supported. If bandwidth is a concern, plain backgrounds are preferred.  If you are using a special video card or OS, consult the documentation. Mouse-to-Cursor Synchronization Mouse-to-cursor synchronization can be an issue with digital KVM interfaces because PS/2 mice transmit incremental information about movement over a period of time rather than an absolute measurement. The OS driver translates acceleration-to-distance based on the local screen resolution and applies linear or nonlinear acceleration mappings. When a remote client communicates with the target server, settings and screen resolutions on both sides of the connection must be taken into account to get natural mouse-to-cursor tracking. Use the USB keyboard and mouse when supported by the target computer. Unlike the PS/2 interface, a USB mouse uses absolute coordinates rather than relative coordinates and does not present translation issues between the local and remote computers. The PS/2 Spider model sets the keyboard and mouse interface to Auto. When it first attempts to use the USB interface, and if it does not detect a USB interface, it falls back to PS/2. There are no restrictions on the mouse settings of the client systems and no special care must be taken when setting mouse parameters of target servers for USB mice. The PS/2 interface performance (tracking) and synchronization can be optimized by removing any special acceleration or nonlinear ballistics. Perform the following steps to configure the mouse-to-cursor synchronization.  Windows Server 1. Select Control Panel > Mouse > Pointer Options. 2. Set the pointer speed to medium and disable Enhanced pointer precision.  Linux Server 1. Set Mouse Acceleration to exactly 1 and threshold to exactly 1. 2. Select Other Operating Systems on the Spider mouse settings page.  Solaris Server 1. Set the mouse settings by using the CDE control panel to "1:1, no acceleration" or "xset m 1". Spider™ and SpiderDuo® KVM-over-IP Device User Guide 27

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3: Installing the Spider Device
Spider™ and SpiderDuo® KVM-over-IP Device User Guide
27
Windows Server
1.
Select
Control Panel
>
Display
>
Settings
. Modify the screen resolution value as required.
2.
Select
Control Panel
>
Display
>
Settings
> Advanced > Monitor
. Modify the screen
refresh rate. Because the server video card is driving the Spider device and not a monitor, a
refresh rate higher than 60 Hz has no effect.
Linux Server
1.
Edit the Xfree86 file “XF86Config” to disable formats that are not supported or not VESA
standard timing.
2.
Reboot is required.
Notes:
Background wallpaper and desktop appearances do not have any particular limitations.
Microsoft Active Desktop and Linux virtual desktop are not supported. If bandwidth is a
concern, plain backgrounds are preferred.
If you are using a special video card or OS, consult the documentation.
Mouse-to-Cursor Synchronization
Mouse-to-cursor synchronization can be an issue with digital KVM interfaces because PS/2 mice
transmit incremental information about movement over a period of time rather than an absolute
measurement.
The OS driver translates acceleration-to-distance based on the local screen resolution and applies
linear or nonlinear acceleration mappings. When a remote client communicates with the target
server, settings and screen resolutions on both sides of the connection must be taken into account
to get natural mouse-to-cursor tracking.
Use the USB keyboard and mouse when supported by the target computer. Unlike the PS/2
interface, a USB mouse uses absolute coordinates rather than relative coordinates and does not
present translation issues between the local and remote computers.
The PS/2 Spider model sets the keyboard and mouse interface to Auto. When it first attempts to
use the USB interface, and if it does not detect a USB interface, it falls back to PS/2.
There are no restrictions on the mouse settings of the client systems and no special care must be
taken when setting mouse parameters of target servers for USB mice. The PS/2 interface
performance (tracking) and synchronization can be optimized by removing any special
acceleration or nonlinear ballistics.
Perform the following steps to configure the mouse-to-cursor synchronization.
Windows Server
1.
Select
Control Panel > Mouse > Pointer Options
.
2.
Set the pointer speed to medium and disable
Enhanced pointer precision
.
Linux Server
1.
Set
Mouse Acceleration
to exactly 1 and threshold to exactly 1.
2.
Select
Other Operating Systems
on the Spider mouse settings page.
Solaris Server
1.
Set the mouse settings by using the CDE control panel to “1:1, no acceleration” or
“xset m 1”.