c4m
2 Bronze

HDMI to VGA adapter connected to laptop to a project image jumps from laptop to projector and back and forth

Hi All I am in need of assistance.

I have a new Dell 17r inspiron laptop that only has hdmi output. 

I have projectors that connect with VGA port only. 

I purchased hdmi to vga adapters and when I connect to the laptop the image will jump from the laptop to the projector and jump back to the laptop and it will continue to do this over and over. 

There are no error messages. on either. These are working projectors. These are new hdmi/vga adapters.

I have tried to change resolution to lower settings and I have tried to lower refresh rates. The projector can support all of what resolutions the laptop has for settings thus the image does show for a second on the projector. These are smartboard/projector 600 series. I have also tried swapping our the adapters that didn't work either. I have also tried making the resolution settings shutting down laptop , connect the hdmi/vga adapter and turn the laptop back on and the issue is still the same. I can't find any posts/forums on this issue to date. 

Thanks,

C0v3r

4 Replies
DELL-Terry B
DellEMC

Re: HDMI to VGA adapter connected to laptop to a project image jumps from laptop to projector and back and forth

C0v3r,

I am not aware of any issues with the 17r using external monitors.   I would suggest trying to narrow down the problem and go from there.   I certainly understand that you may not have all the devices present but if you do I would try to verify if this is problem with HDMI on the notebook, a problem with the adapters, or the monitors.

Basic steps, try running the notebook under power saving or high performance in the Nvidia control panel. The system is  an optimus and it would be interesting to find if the problem only occurs with the integrated Intel GPU (power saving) or the Nvidia GPU (high performance).  If you aren't familiar with configuring Optimus the following document may help.

Uninstall and reinstall video drivers.  Download the latest Intel and Nvidia video drivers for your model of notebook from support.dell.com. Download the drivers and save them to the desktop, please don't install them yet.  Uninstall the Intel and Nvidia driver and software from the system and reboot.  Now install the drivers, with the Intel driver first, followed by the Nvidia driver.

If possible connect the notebook to a HDMI monitor, something that doesn't require the use of any adapters and see if the problem continues.  Verify if the HDMI ports is working at all on the notebook.

If it looks like video is working fine on the notebook, and HDMI works well. Test the HDMI to VGA adapters.  If possible try them on another notebook, or try other HDMI adapters on this notebook. Try to verify if the problem follows the adapters or the notebook.

If you verify that the notebook works fine with HDMI alone, and the HDMI to VGA adapters are good, try another projector.  Or try your current projector on another PC.  Again see if the problem follows the notebook or the projector.

If you have the spare adapters and projectors handy, you have access to a computer lab or office, test with other adapters, monitors projectors first and see if you can narrow down where the problem springs.

If you only have the one VGA adapter, projector then yeah adjust the Optimus settings and then uninstall / reinstall the video drivers.

 

Please let me know what you find out.

 

 

TB

Specialize in Laptops, Mobile Devices
#IWork4Dell

0 Kudos
Babarindekehind
2 Bronze

RE: HDMI to VGA adapter connected to laptop to a project image jumps from laptop to projector and back and forth

unable to see laptop screen when connected to projector, what is way forward?

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c4m
2 Bronze

RE: HDMI to VGA adapter connected to laptop to a project image jumps from laptop to projector and back and forth

Thanks. Sorry so late. It is a problem with the vga/hdmi adapter. I ended up just swapping out a projector that had an hdmi output and using just hdmi line so no adapter needed. At the time we had many projectors with only vga outputs. This had happened to 5 other same built laptops.

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c4m
2 Bronze

RE: HDMI to VGA adapter connected to laptop to a project image jumps from laptop to projector and back and forth

Windows key on keyboard + P and choose duplicate. Or right click on desktop and go into your graphics card properties.

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