hdmi to vga flickering screen - Chromebook Forum : Google Chromebook Forums
LinkBack Thread Tools
post #1 of 3 (permalink) Old 04-19-2014, 01:20 AM Thread Starter
Junior Member
Join Date: Apr 2014
Posts: 1
hdmi to vga flickering screen

I have a acer 720 and have a hdmi-vga apdapter. When I hook it up the screen and projector filckers on and off. I touch the keyboard enough to avoid screen saver from being activated.


does anybody know how to keep the screen on (disable the screen saver)?

270 is offline  
Sponsored Links
post #2 of 3 (permalink) Old 04-19-2014, 02:56 AM
Super Moderator
Robbie Dalziel's Avatar
Join Date: Mar 2014
Location: Birmingham, West Midlands...
Posts: 354

Good day to you 270...

Don't know about the screen saver issue, but I have read on numerous occasions, that using cross-over cables (HDMI/VGA) - (or the other way around) is not to be recommended, because of symptoms such as that which you've mentioned - for starters... Don't know what other effects such might produce... It also emphasized that 'same end' cables, of the 'very best quality' are used at all times...

Sorry I can't be more helpful or specific than that...

Robbie D....

We can only survive on this earth, as long as we're able to serve the purpose for which we came here...

Therein lies the £64,000 dollar question: 'What might that be'???
Robbie Dalziel is offline  
post #3 of 3 (permalink) Old 09-30-2020, 09:51 AM
Senior Member
Join Date: Aug 2020
Posts: 125
I would say that either the VGA cable or the VGA connector on the laptop is damaged.

Have you another cable you can try?

Also try screwing in the cable at both ends to eliminate any movement.

Remember that VGA is an analogue format and so some flickering may occur, the quality of the signal is highly dependent on the connection and the quality/length of the VGA cable.

With HDMI, the signal is digital and so the output is far less dependent on the cable quality.

Oh, one other thing. Even with a good VGA cable, the monitor will probably not be able to do as good a job as with HDMI, especially at really high resolutions - what resolution are you using? That's because the analogue signal has a limited bandwidth.
Lewis-H is offline  

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome