This document summarizes issues with the display of channel screens on GV-Video Capture Cards after the screen saver stops or the computer exits standby or hibernation mode. When the screen saver has password protection activated, channel screens turn pink or black on certain cards when the DSP Overlay function is enabled. Exiting standby or hibernation mode causes loss of video signals or mosaic images on some cards, and black screens on other cards. Restarting the computer or GV-System restores normal display, and disabling password protection or hibernation is recommended to prevent future issues.

1. Issues with channel screen display after the screen
saver stopped, or the computer left standby or
hibernation modes
Article ID: GV-15-08-07-14
Release Date: 7/14/2008
Applied to
GV-Video Capture Cards, including GV-600, GV-650, GV-800, GV-1120, GV-1240, GV-1480,
GV-2004 and GV-2008
Symptoms
After the screen saver was stopped or the computer left standby or hibernation modes, the
images on channel screens were not displayed at all or with poor quality.
Of Screen Saver
If the screen saver had no password protection, the channel screens would function normally
after the screen saver was stopped.
However, if the password protection was activated, the channel screens would turn pink or
black when these conditions were true:
DSP Overlay function was activated.
GV-1120, GV-1240, GV-1480, GV-2004 or GV-2008 was installed.
Note that recording files were not affected if the GV-System was monitoring.
GeoVision Inc. 1 Revision Date: 7/14/2008

2. Of Standby or Hibernation
The symptoms varied by the type of the installed GV-Video Capture Card.
On the computer where GV-1120, GV-1240, GV-1480, GV-2004 or GV-2008 was installed,
this symptom occurred:
After the computer left standby or hibernation modes, all channel screens had lost video
signals.
No signals
Even after the GV-System was restarted, the images displayed were all mosaic.
Mosaic images
On the computer where GV-600, GV-650 or GV-800 was installed, this symptom
occurred:
After the computer left standby or hibernation modes, all channel screens turned black.
GeoVision Inc. 2 Revision Date: 7/14/2008

3. Solutions
To solve the issues with screen saver:
Restart the GV-System, and you will find the channel screens are back to normal.
To avoid experiencing this problem again, it is recommended that you should follow these
steps to cancel password protection.
1. Right-click the desktop, and then click Properties.
2. In the Display Properties dialog box, click the Screen Saver tab, clear the selection of
On resume, password protect, and then click OK.
GeoVision Inc. 3 Revision Date: 7/14/2008

4. To solve the issues with standby and hibernation:
The solutions vary by the type of the installed GV-Video Capture Card.
On the computer where GV-1120, GV-1240, GV-1480, GV-2004 or GV-2008 is installed,
restart the computer.
On the computer where GV-600, GV-650 or GV-800 is installed, restart the GV-System.
However, to avoid experiencing this problem again, it is recommended that you should not put
your computer in standby or hibernation modes. To cancel hibernation, follow these steps:
1. On Click Start, click Settings, click Control Panel, and then click Power Options.
2. In the Power Options Properties dialog box, click the Hibernate tab, clear the selection
of Enable hibernation, and then click OK.
GeoVision Inc. 4 Revision Date: 7/14/2008