Re: Inspiron 5110 and SE198WFP resolution mismatch


I am glad that the monitor is displaying the optimal resolution. For the monitor not going to sleep, try these steps:

Try the following steps to check if there are any devices or software applications that hinder the monitor from going to sleep mode. Open command prompt: click on start – type 'cmd' – select the result on the top in search results >> right-click and select 'Run as Administrator'.
Type : powercfg -devicequery wake_armed
This command gave a list of devices which prevent the computer from going to sleep mode .For e.g. an Inspiron N5110 could show these 2 devices among the others: Dell Touchpad, Realtek PCIe FE Family Controller.
Here is an example for a desktop computer: 

After this is verified, go to the relevant entries in the Device Manager and disable the Power Management options:
Open Device Manager: Click on Start>> type 'devmgmt.msc' in the search box and press Enter.
Search for the respective device. In the above mentioned case, the entries would be under the following categories:
Mice and other pointing devices: Dell Touchpad

Network Adapters: Realtek PCIe FE Family Controller.

  • Right click on the respective entry and click on Properties.
  • A window pops up, click on Power Management tab.
  • Ensure that the box is not checked for ‘Allow this device to wake computer’
  • Click on OK to apply the changes.

Another useful command is powercfg –requests which gives you the list of applications that could be preventing the computer from going into sleep.
If any applications are listed, you may close them if they are on the screen, or you may open task manager and ‘end-task’ the respective process.
How to end-task a process using Task Manager

  •  Right-click on the task bar, click on Task manager.
  •  Go to ‘Processes’ tab
  •  Look for the respective file name , right-click it and click on End Process
  •  Confirm when the prompt asks for the same
  •  Sometimes, the same application can be called multiple times, for e.g. iexplore.exe ,i.e. the Internet explorer process/application can be seen on more than one instance , to close all of them in a single attempt , choose “End Process Tree” and the list containing multiple entries of the same process will close.

If this does not help, try a different HDMI to DVI D single link adapter (refer to he image) and try a different HDMI cable.

Hope this helps.
Do write back with the results.

Thanks and Regards,
Manpreet C
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