Article Summary: |
This article provides information on Latitude E6420's intermittently displaying red wavy lines while streaming video. |
Table of Contents:
- Problem
- Solution
Problem |
Intermittently, E6420's May Display Wavy Lines While Streaming Video
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Users may report intermittent red wavy lines on the internal LCD screen of the E6420 while streaming video. This behavior has only been observed under the following configuration:
· Windows 7 32-bit or 64-bit
· Optimus™ disabled
· Dell nVidia driver version A03
· Docked in a Dell E-Port or E-Port Plus
· Connected to external monitor through onboard video ports
Solution |
Update The nVidia Driver And Re-enable Optimus™
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This is not a hardware issue. The following options have been determined to resolve the issue:
- Enable Optimus™ and allow Windows to utilize the hybrid video solution
- Install the latest driver from nVidia
Enabling Optimus™ in the BIOS:
- Shut the system off.
- Press the Power button and immediately press the F2 button when the Dell logo appears onscreen.
- Select the Video Category in the left pane of the BIOS window displayed.
- Select the Optimus™ option.
- In the right pane, check the Enable Optimus™ box.
- In the lower right corner of the screen, click Apply and Exit. The system will reboot normally.
** Helpful Links **
nVidia Driver Support Site: nVidia
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