The Troubleshooting Tab

Options that you can specify within this tab are mainly for debug purposes.

Level for slow network

This option enables XServer to avoid the focus-problem when your network (or X client's machine) is slow, and XServer processes the "ButtonRelease" mouse event before it receives the "AllowEvents"/"GrabKeyboard" requests from the corresponding X client.

A slider position defines a priority level of kbd/mse events when redrawing an image that is associated with the mouse pointer position or key. For slow network or X client's machine, it may be preferable to reduce traffic due to reducing mouse pointer positions transmitted to X client and so reducing image redrawing.

Display Number for XDMCP

This option enables you to provide a "virtual" value of DisplayNumber for XServer. This value is sent to a remote XDMCP daemon instead of the real value.

Your IP address for XDMCP daemons

This option enables you to specify an IP address that XServer will use to communicate with the XDMCP daemon.
This is applicable when the XServer's PC has more than one IP address. In this case, XServer will use the IP address specified.

MS OpenGL32 pixel format

An integer value in this entry field specifies an appropriate pixel format used by MS Windows OpenGL32 (not in the MESA mode; see GLX Extension on the Screen Tab).

If you enter 0 or leave the field empty, then MS Windows OpenGL32 will use MSDN function ChoosePixelFormat. The ChoosePixelFormat function attempts to match an appropriate pixel format supported by a device context to a given pixel format specification.

If you enter a positive integer, then MS Windows OpenGL32 will use the value to match an appropriate pixel format to a given pixel format specification.

If you enter a negative integer, then MS Windows OpenGL32 will use MSDN function DescribePixelFormat to find an appropriate pixel format. The DescribePixelFormat function obtains information about the pixel format.

Timeout to Font Server

This slider changes the default timeout value used for access to remote font servers.

Disable XServer's options

This entry field disables items from the XServer's Control menu:
Restore, Move, Size, Minimize, Maximize, Close,
Edit, Options, Refresh, LocalRef, Restart, Macros, Run, Messages,
About, Help, LocalWin, Readme.

To disable some of the menu items, enter them in the field comma separated.

IP address to access to XServer

This option enables you to bind an IP address to the XServer's listening socket.
E.g., the 127.0.0.1 value allows access to XServer from local X clients only.

Block font path changing

If disabled, this check box prevents from changing the XServer Font Path by external requests (so remote X clients are not allowed to change Font Resources). The default is OFF.

Refresh screen on changing color cells

This option is used to set the immediate refresh of screen after any color cell of the active colormap is changed.
Be ready that this setting significantly slows down the XServer's performance.

Operate with Linux SuSE 9.0

This option enables XServer to be operational with Linux SuSE 9.0.

This option is relevant to the TrueColor visual mode with the Enable RENDER Extension check box cleared. In this case, XServer will "emulate the 8-bit pixmaps creation" allowing X applications (running under Linux SuSE 9.0) to use 8-bit pixmaps. To enable RENDER Extension is the most correct way.

The Multiple+RemoteWM Window Mode Box

Display remote WMs in background

This option is used to allow a remote window manager to display in background if it provides this (e.g., olwm does not provide, but dtwm does). Such a background window is suppressed by default because it covers all non-X windows.
This setting is for the XServer's Multiple+RemoteWM mode.

Display any X over all MS windows

This option allows XServer to display any X windows on top of MS windows. This setting is for the XServer's Multiple+RemoteWM mode. In this case, it is convenient to use local mwm.

The Multiple Window Mode Box

Not use _MOTIF_WM_HINTS property

This option enables XServer to prevent from processing the "_MOTIF_WM_HINTS" windows property (that may be requested by remote X clients).

• Use _MOTIF_WM_HINTS_move

  This option enables XServer to prevent from processing the "_MOTIF_WM_HINTS_move" windows property (that may be requested by remote X clients).

Not check of WM_SIZE_HINTSinc

This option enables XServer to prevent from processing the "WM_SIZE_HINTS" windows property (that may be requested by remote X clients).

Emulate WM window substrate

If this check box is selected, XServer will emulate a window substrate of a remote Window Manager (for some Client applications that require it to work properly).
This is a special mode for some non-standard X11-Clients which require the existance of a parent window for the Client's window as a sign of running Window Manager.

Sound when XServer uses Clipboard

This check box enables system bell sound when XServer will perform Edit operations (i.e., from the Edit menu) with Clipboard.

Not start remote Window Managers

If this check box is selected, XServer will disable starting a remote window manager in answer to its request since there is another window manager already running (for Single and Full Screen modes). In the Multiple modes, only local window managers are allowed to run.

Check of X client's Backing Store

This option is only used in the Multiple and Multiple+RemoteWM modes.

If this check box is enabled, XServer will use the Backing Store mode, when the X-application requests it. But XServer will not use Backing Store while re-displaying an X-application's window in some cases.

If this check box is clear, XServer will use the Backing Store mode, when the X-application requests it.

To try this option may be useful when an X client uses the Backing Store mode and the windows are not properly redrawn.

See also Enable Backing Store on the Advanced Tab.

Enable XKEYBOARD Extension

If this check box is selected, XServer will use standard XKEYBOARD Extension (for some Client applications that require it to start up properly).

Default

This button sets up the default values for check boxes and edit fields in the tab.