Neumont uses HDMI based projectors, with the exception of rooms 325, 327, and 012 which use VGA. When troubleshooting projection issues it is best to start your way from the bottom and work your way up.
What this means is described below:
- Is the transmitter power cord plugged into the floor box?
- Is the transmitter display cable plugged into the display switch box installed in the lectern?
- Is the display cord being used plugged into the display switch box on the lectern?
- Is the transmitter on the right channel? It will need to be on the HDMI channel to function
- Is the projector on the right channel? It will also need to be on the HDMI channel to function (with the exception of the VGA rooms, which won't have transmitters and should never need to be on any other channel)
- There is a chance that the cord is bad, in this case try another laptop to make sure that it is malfunctioning across multiple devices, and if it is contact IT Services to get a new cord
If none of the above listed items resolve the situation it is time to check to make sure the laptop is configured right for projection. Most of the time laptops will automatically check and try to duplicate displays if it detects a display cord is plugged in.
Sometimes though a program called NVIDIA Optimus will cause issues when projecting, and so you will need to work around that. There are two main ways to deal with NVIDIA Optimus. Switching your laptop to operate in "Discrete" mode, or manipulate the NVIDIA Control Panel.
To switch to "Discrete" graphics mode:
- You will need to restart your machine to access the BIOS menu, so read the next few steps and try to remember how to navigate the BIOS
- When the Lenovo splash screen comes up after booting, press the "ThinkVantage" button (usually blue) in the upper left portion of your laptop
- This will bring you to a screen with a few options, press F1 to enter the BIOS
- Once the BIOS loads, use the arrow keys to navigate to the "Config" category and you will want to select the "Display" field
- Once in the display field there will be three options
- Boot Display Device: [ThinkPad LCD] (leave as is)
- Graphics Device: [NVIDIA Optimus] (press "Enter" here and select "Discrete")
- OS Detection for NVIDIA Optimus: [Enabled] (you are ok to leave this as is, but what this does is detect changes in the operating system and allows the computer to revert back to Optimus if it deems it necessary, most users disable this feature)
What this does is basically tell your computer to run graphics only off of the NVIDIA card. This eliminates the issue caused by the NVIDIA Optimus option that tries to determine which graphics card is best suited for what you are currently trying to do.
This change usually fixes the issue but will increase power consumption of the device, so if you are not able to power the device at least once a day you may want to try option two.
How to use the NVIDIA Control Panel
- This option just uses the NVIDIA interface to control duplication as opposed to using the default windows resolution tools
- Right click anywhere on the desktop and you should see an option for the NVIDIA Control Panel, select it:
- This will bring you to the NVIDIA Control Panel, where you will want to select the "Set up multiple displays" option
- In the multiple displays menu, you should see two different screens, one representing the laptop screen and one representing the projector's screen
- You will want to right click on the projector screen and select "Clone with" and then it will give you the option to clone with the laptop display
- Once this is done you should see something similar to the image below:
- Hit "Apply" and you your display should then duplicate to the projector