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Another Issue I Could Use Help With...

 
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Klandathu



Joined: 06 Apr 2008
Posts: 27

PostPosted: Fri Apr 25, 2014 9:49 pm    Post subject: Another Issue I Could Use Help With... Reply with quote

My technological incompetence has spawned yet another troubleshooting issue that I'm hoping the GR Brain Trust can help forge a suitable answer to.

My laptop has an HDMI port on it. My television has an HDMI port on it. I have an HDMI cable. The wondrous witchcraft that is science allows me to to connect these two electronic devices via the aforementioned magical cable I have in my possession, so as to make the pictures and sounds emanating from my laptop replicate from to my television screen. The whole process is rather simple and I have no trouble with any hookups or connections or anything (that I can notice anyway).

Here's the problem: after having a video playing from my computer through my TV for more than a few minutes, the screen on both the computer and TV start having static-y lines running and flickering across them. They get bad enough to noticeably interfere with the viewing experience. Neither the sound/picture quality nor the framerate or anything else is affected, it's just the damn static blocking the picture.

A few things I've ruled out: computer is not overheating; I keep the vent unblocked and raised off of the floor and it stays nice and cool, all of my drivers are 100% up-to-date, the HDMI cable is not loose or defective (and it's not the cable itself, I've tried several others with similar results).

The only possibility I've been able to formulate is something involving my computer trying to play the same video on two screens at once and it just being too much stress on my video card or CPU or something to that effect. If that's the case, is there a way to stop playback from my laptop while keeping the video playing on the TV while its connected?

Any suggestions? Thanks (again) in advance for any help.
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De-Ting
Formerly Known as Prince


Joined: 11 Nov 2006
Posts: 8049

PostPosted: Sat Apr 26, 2014 2:17 am    Post subject: Reply with quote

My guess is it's your gpu. My past two video cards for my desktop have had glitches, one with jumbling the mouse cursor, and my current one periodically checkerboarding some parts of the screen. It's not necessarily a stress or overheating problem, just faulty hardware. I've tried reseating it and everything.
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madster111
The Original Pie Lover


Joined: 04 Jun 2006
Posts: 6356

PostPosted: Sat Apr 26, 2014 10:35 am    Post subject: Reply with quote

GPU. Probably getting too hot, dropping voltage and subsequently artifacting.
Looks like this, yeah?
https://s3.amazonaws.com/assets.overclock.net/4/47/47397217_vbattach106022.jpeg
http://imagizer.imageshack.us/a/img204/3143/1000814ef.jpg

If you can, underclock it and see if the issue still continues. If not, clean the dust out of the fans and/or cut new vent holes in the bottom and just run it through the TV with the laptop display off.

Right click, screen resolution, display only on (probably #2).

Just to be sure, run GPU-Z and Speccy while doing it. If the temps go up and it starts producing artifacts, watch to see if the clock speeds go down. If they do, it's a temp issue, if they don't (and it's under 90 degree celcius) then it's some other hardware problem and if you're out of warranty, you're about to have a bad time.
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Klandathu



Joined: 06 Apr 2008
Posts: 27

PostPosted: Sun Apr 27, 2014 2:09 pm    Post subject: Reply with quote

madster111 wrote:
GPU. Probably getting too hot, dropping voltage and subsequently artifacting.
Looks like this, yeah?
https://s3.amazonaws.com/assets.overclock.net/4/47/47397217_vbattach106022.jpeg
http://imagizer.imageshack.us/a/img204/3143/1000814ef.jpg

If you can, underclock it and see if the issue still continues. If not, clean the dust out of the fans and/or cut new vent holes in the bottom and just run it through the TV with the laptop display off.

Right click, screen resolution, display only on (probably #2).

Just to be sure, run GPU-Z and Speccy while doing it. If the temps go up and it starts producing artifacts, watch to see if the clock speeds go down. If they do, it's a temp issue, if they don't (and it's under 90 degree celcius) then it's some other hardware problem and if you're out of warranty, you're about to have a bad time.


Doesn't look quite like that. I've had screens look like that a couple of times before and it had always meant that my GPU had shit itself. This problem only pops up when I'm connected through the TV. I'm about 99% sure my GPU is still in good shape. The lines are thin, solid, black and white lines that flicker across the screen. After a while it gets so bad that it almost looks like the screen is flashing on and off very quickly (it's not, but the lines make it appear to be). I'll try your idea(s) though, see if they help. I have a feeling if I turn off my laptop screen while streaming through the TV it'll fix the problem, but we'll have to wait and see. I didn't know you could do that. Thanks though.
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Klandathu



Joined: 06 Apr 2008
Posts: 27

PostPosted: Fri May 02, 2014 10:53 am    Post subject: Reply with quote

madster111 wrote:
GPU. Probably getting too hot, dropping voltage and subsequently artifacting.
Looks like this, yeah?
https://s3.amazonaws.com/assets.overclock.net/4/47/47397217_vbattach106022.jpeg
http://imagizer.imageshack.us/a/img204/3143/1000814ef.jpg

If you can, underclock it and see if the issue still continues. If not, clean the dust out of the fans and/or cut new vent holes in the bottom and just run it through the TV with the laptop display off.

Right click, screen resolution, display only on (probably #2).

Just to be sure, run GPU-Z and Speccy while doing it. If the temps go up and it starts producing artifacts, watch to see if the clock speeds go down. If they do, it's a temp issue, if they don't (and it's under 90 degree celcius) then it's some other hardware problem and if you're out of warranty, you're about to have a bad time.


So turning off my laptop's display while streaming through my TV seems to have fixed the issue. I always suspected that would do it, but I didn't know that you actually COULD. Much thanks for the info.
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used44



Joined: 08 Mar 2002
Posts: 20942

PostPosted: Fri May 02, 2014 12:43 pm    Post subject: Reply with quote

Nice to hear!

Madster finally had a useful answer that didn't involve spending $1,000.
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madster111
The Original Pie Lover


Joined: 04 Jun 2006
Posts: 6356

PostPosted: Fri May 02, 2014 1:51 pm    Post subject: Reply with quote

I'd still recommend cleaning out the dust. It's usually a 10 minute thing but can bring your temps down a surprising amount, often increasing performance and/or battery life. Just undo some screws and blow it out and rub off any stubborn dust.
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Klandathu



Joined: 06 Apr 2008
Posts: 27

PostPosted: Fri May 02, 2014 4:04 pm    Post subject: Reply with quote

madster111 wrote:
I'd still recommend cleaning out the dust. It's usually a 10 minute thing but can bring your temps down a surprising amount, often increasing performance and/or battery life. Just undo some screws and blow it out and rub off any stubborn dust.


Yeah, not a bad idea. I should probably do that too. Can't hurt.
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