MATLAB: Do I receive a warning message “MATLAB does not support bit depths less than or equal to 8” when launching MATLAB on MAC OS X

MATLAB

When launching MATLAB on a MAC OS X machine, the following warning message is displayed:

 Warning: MATLAB does not support bit depths less than or equal to 8. Figure windows may not be usable.

Best Answer

This warning is displayed because of either of the following reasons:

1. Your MAC display is set to 256 colors. To resolve this, do the following:

- Open System Preferences located in your Applications folder

- Select "Displays" located in the "Hardware" section

- In the "Colors" field, select a color option of Thousands or Millions.

- Restart MATLAB. The warning message should not be displayed now.

2. Your X11 environment is set to 256 colors. To resolve this, do the following:

- Open X11 located in your Applications/Utilities folder

- Select X11 > Preferences from the top menu bar.

- Select "Output" from this menu

- In the "Colors" field, select a color option of Thousands or Millions.

- Quit X11 by selecting: X11 > Quit X11

- Restart MATLAB. The warning message should not be displayed now.

Related Solutions

MATLAB: Do I receive an “Error code 8” when using Simulink Design Verifier

Error code 8 represents an internal error in the Simulink Design Verifier analysis engine.

If you receive this error, contact MathWorks Technical Support. If possible provide a model that can reproduce the problem. If you are unable to send that model, take the following steps to collect information in order to troubleshoot the error:

1. Set the following option on the MATLAB command line:

>  set slavteng('feature','DebugLevel',1)

2. Run Simulink Design Verifier compatibility check for the model being analyzed

3. The compatibility check will generate a *.tecla file for the model. Information in this file can provide clues about the root cause of the problem.

The other piece of information is analysis settings. Here is how to retrieve the settings:

1. Get Simulink Design Verifier options for analysis by executing the following command from the MATLAB command line

>> opts = sldvoptions(model);
>> get(opts)

Finally, include *.tecla and options displayed in the MATLAB command prompt.

MATLAB: How to prevent Netscape from stealing colors from X11

One way to prevent is to start Netscape with the -install switch:

> netscape -install &

This installs a private colormap for Netscape. In some window managers you will experience color flashing as you change the focus from window to window. This occurs because the maximum number of screen colors has already been utilized. For example:

1) The maximum number of supported screen colors is 256.

2) Other applications use up 150 colors.

3) Netscape uses 150 colors.

4) The total number of required colors is 300.

5) The 300 required colors will not fit onto a 256 color map.

Hence, the 'focus' window will use all 150 colors that it needs. Whereas other windows (applications) in the background will request as many colors as possible from the system colormap. (about 106 slots will be open and used) However, 44 colors that have been requested will not be available. Hence, any available colors will be utilized to fill the 44 'orphaned' colors.

This effect is known as 'technicolor.' It is inconsequential and will not hurt the system.

Best Answer

Related Solutions

MATLAB: Do I receive an “Error code 8” when using Simulink Design Verifier

MATLAB: How to prevent Netscape from stealing colors from X11

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