SOLVED Sluggish on boot when HDMI plugged in

t_rex · 8th July 2012, 11:55 AM

This only recently started happening.

When I boot my laptop with anything plugged into the hdmi port, as soon as windows hits the login screen, it turns completely sluggish. The mouse and keyboard has a 3-10 second delay, everything just turns slow even the cursor blink rate is in slow motion.
The only fix it to boot the laptop with nothing plugged into the hdmi port, then once I log in, plug in my monitor and it's perfectly fine.

I only just formatted about 3 weeks ago, I haven't installed anything new before this appeared, it doesn't matter if I run it off the battery or the wall it still happens.

It's an Acer Aspire 5742g.

IzzehO · 8th July 2012, 1:36 PM

I'll ask the obvious first to get it out of the way:

Have you updated the graphics drivers? Tried BIOS update?
Have you tried a different HDMI cable and monitor?
The problem persists even if you leave it to load for a while? Or does it go away after a while? (I'm not to sure from your description)
What does task manager have to say when its sluggish? CPU at 100% I imagine? RAM full?
What are temps like?

My best guess at the moment is BIOS is being left to pass the information along, and doing it incorrectly. The CPU then somehow ends up trying to do all the work as it wasn't handed off to the GPU?

mareke · 8th July 2012, 1:42 PM

Doesn't surprise me at all. Windows has trouble recognising monitors connected via HDMI in my experience. My computer won't show a picture when waking up from sleep if I connect my monitor using a HDMI cable. Maybe try using the VGA or DVI port on the laptop to connect an external monitor until Microsoft gets Windows to work properly with HDMI.

Madengineer · 8th July 2012, 2:10 PM

Quote:

Originally Posted by t_rex

This only recently started happening.

When I boot my laptop with anything plugged into the hdmi port, as soon as windows hits the login screen, it turns completely sluggish. The mouse and keyboard has a 3-10 second delay, everything just turns slow even the cursor blink rate is in slow motion.
The only fix it to boot the laptop with nothing plugged into the hdmi port, then once I log in, plug in my monitor and it's perfectly fine.

I only just formatted about 3 weeks ago, I haven't installed anything new before this appeared, it doesn't matter if I run it off the battery or the wall it still happens.

It's an Acer Aspire 5742g.

Have you installed the drivers to use the HDMI output?

t_rex · 10th July 2012, 4:58 PM

Ended up trying a whole bunch of different Intel graphics drivers yesterday, finally got one to work on boot. Beats me why this issue popped up all of a sudden. Oh well fixed now.

8th July 2012, 11:55 AM	#1
t_rex Member Join Date: Dec 2001 Location: 3031 Melb Posts: 4,026	Sluggish on boot when HDMI plugged in This only recently started happening. When I boot my laptop with anything plugged into the hdmi port, as soon as windows hits the login screen, it turns completely sluggish. The mouse and keyboard has a 3-10 second delay, everything just turns slow even the cursor blink rate is in slow motion. The only fix it to boot the laptop with nothing plugged into the hdmi port, then once I log in, plug in my monitor and it's perfectly fine. I only just formatted about 3 weeks ago, I haven't installed anything new before this appeared, it doesn't matter if I run it off the battery or the wall it still happens. It's an Acer Aspire 5742g. __________________ huh Last edited by t_rex; 10th July 2012 at 4:55 PM.

8th July 2012, 1:36 PM	#2
IzzehO Member Join Date: Mar 2011 Location: Hawthorn East, Vic Posts: 857	I'll ask the obvious first to get it out of the way: Have you updated the graphics drivers? Tried BIOS update? Have you tried a different HDMI cable and monitor? The problem persists even if you leave it to load for a while? Or does it go away after a while? (I'm not to sure from your description) What does task manager have to say when its sluggish? CPU at 100% I imagine? RAM full? What are temps like? My best guess at the moment is BIOS is being left to pass the information along, and doing it incorrectly. The CPU then somehow ends up trying to do all the work as it wasn't handed off to the GPU? Last edited by IzzehO; 8th July 2012 at 1:43 PM.

8th July 2012, 1:42 PM	#3
mareke Member Join Date: Jun 2003 Location: Sydney, NSW Posts: 3,561	Doesn't surprise me at all. Windows has trouble recognising monitors connected via HDMI in my experience. My computer won't show a picture when waking up from sleep if I connect my monitor using a HDMI cable. Maybe try using the VGA or DVI port on the laptop to connect an external monitor until Microsoft gets Windows to work properly with HDMI. Last edited by mareke; 8th July 2012 at 1:54 PM.

10th July 2012, 4:58 PM	#5
t_rex Member Join Date: Dec 2001 Location: 3031 Melb Posts: 4,026	Ended up trying a whole bunch of different Intel graphics drivers yesterday, finally got one to work on boot. Beats me why this issue popped up all of a sudden. Oh well fixed now. __________________ huh