Hi all -

There's an annoying issue with my PC that I've noticed since I bought it about 2 years ago - Sometimes I'll leave it on for a while (while it's downloading something or performing some other long task) and turn the monitor off if I'm not around, and after doing this, sometimes when I come back after some hours and turn the monitor back on, the monitor doesn't see a signal from the PC, even after I move the mouse or press a key on the keyboard (in case the screen saver was activated). If I reset the PC, the picture shows up on the screen as normal. This has happened with 2 different monitors now (I upgraded the monitor recently). Since the picture comes back after I reboot the PC, it suggests to me that it's caused by an OS/software issue. I thought Windows might be set to turn off the monitor after some time, but I checked Windows' power settings, and I have it set to not turn the monitor off. I'm not sure yet what would cause this, and I don't like having to hard-reset my PC to get the picture back. And, it only happens sometimes.. I've left this PC on with the monitor off for hours at a time many times, and most of the time, the video signal is fine after I come back and turn the monitor back on.

These are the PC's specs:
- CPU: AMD Phenom x4
- Motherboard: MSI MS-7548
- RAM: 8GB
- Video card: Nvidia GeForce 9500GGS w/ 512MB (PCI Express x16)

Does anyone have an idea about what might cause this?

Nightfox

Re: Monitor sees no signal after PC on for hours
By: Nightfox to All on Sat May 07 2011 09:11 am

Does anyone have an idea about what might cause this?

Most likely a video driver issue. Have you tried reinstalling the driver?

Also, have you checked your event log?

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Re: Monitor sees no signal after PC on for hours
By: Dreamer to Nightfox on Sat May 07 2011 16:42:33

Most likely a video driver issue. Have you tried reinstalling the driver?

I did update the driver not too long ago, but not because of this issue. This issue had been happening since before I updated the driver though.

Do you think it could be caused by the video card overheating? A little while ago I installed a program (SpeedFan) that tells you the temperatures of various chips and speeds of various fans in your system, and it said my video card was a bit hot. I was a little concerned, but my PC is fairly free of dust inside, and the video card fan still works..

Nightfox

Re: Monitor sees no signal af
By: Nightfox to All on Sat May 07 2011 09:11 am

Hi all -

There's an annoying issue with my PC that I've noticed since I bought it abo 2 years ago - Sometimes I'll leave it on for a while (while it's downloading something or performing some other long task) and turn the monitor off if I' not around, and after doing this, sometimes when I come back after some hour and turn the monitor back on, the monitor doesn't see a signal from the PC, even after I move the mouse or press a key on the keyboard (in case the scre saver was activated). If I reset the PC, the picture shows up on the screen normal. This has happened with 2 different monitors now (I upgraded the monitor recently). Since the picture comes back after I reboot the PC, it suggests to me that it's caused by an OS/software issue. I thought Windows might be set to turn off the monitor after some time, but I checked Windows' power settings, and I have it set to not turn the monitor off. I'm not sure yet what would cause this, and I don't like having to hard-reset my PC to ge the picture back. And, it only happens sometimes.. I've left this PC on wi the monitor off for hours at a time many times, and most of the time, the vi signal is fine after I come back and turn the monitor back on.

These are the PC's specs:
- CPU: AMD Phenom x4
- Motherboard: MSI MS-7548
- RAM: 8GB
- Video card: Nvidia GeForce 9500GGS w/ 512MB (PCI Express x16)

Does anyone have an idea about what might cause this?

is your video card getting hot? if so open tower and put a fan in font of it .... it helps here... also see if your coolant is running out in your system, if so, need to replace that....
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Re: Monitor sees no signal af
By: Internetking to Nightfox on Sat May 07 2011 19:06:00

is your video card getting hot? if so open tower and put a fan in font of

I've wondered if that might cause it. I installed an app not too long ago that shows you system temperatures, and it said the video card was a little hot.

.... it helps here... also see if your coolant is running out in your syst if so, need to replace that....

Coolant? My PC is air-cooled, not water-cooled.. ;)

Nightfox

Re: Monitor sees no signal af
By: Nightfox to Internetking on Sat May 07 2011 07:37 pm

Re: Monitor sees no signal af
By: Internetking to Nightfox on Sat May 07 2011 19:06:00

is your video card getting hot? if so open tower and put a fan in font

I've wondered if that might cause it. I installed an app not too long ago t shows you system temperatures, and it said the video card was a little hot.

.... it helps here... also see if your coolant is running out in your s if so, need to replace that....

Coolant? My PC is air-cooled, not water-cooled.. ;)

Nightfox

yeah and is the transmission sticking too?

"Practise safe Lunch, Use a Condiment"


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Re: Monitor sees no signal af
By: Corey to Nightfox on Sat May 07 2011 22:57:14

Coolant? My PC is air-cooled, not water-cooled.. ;)

yeah and is the transmission sticking too?

Yeah, I need to get that fixed.. And it's about due for its 60,000 mile service.

Re: Monitor sees no signal after PC on for hours
By: Nightfox to All on Sat May 07 2011 09:11 am

There's an annoying issue with my PC that I've noticed since I bought it abo 2 years ago - Sometimes I'll leave it on for a while (while it's downloading something or performing some other long task) and turn the monitor off if I' not around, and after doing this, sometimes when I come back after some hour and turn the monitor back on, the monitor doesn't see a signal from the PC, even after I move the mouse or press a key on the keyboard (in case the scre saver was activated). If I reset the PC, the picture shows up on the screen normal. This has happened with 2 different monitors now (I upgraded the monitor recently). Since the picture comes back after I reboot the PC, it suggests to me that it's caused by an OS/software issue. I thought Windows might be set to turn off the monitor after some time, but I checked Windows' power settings, and I have it set to not turn the monitor off. I'm not sure yet what would cause this, and I don't like having to hard-reset my PC to ge the picture back. And, it only happens sometimes.. I've left this PC on wi the monitor off for hours at a time many times, and most of the time, the vi signal is fine after I come back and turn the monitor back on.

I've had that happen before. As long as you turn your monitor off when you're not using your computer (I always do).. turn off all your power management stuff. No screen saver, or blank screen after a certain amount of time. No hibernation, no nothing. Have your computer run normally when running, but not in use. If you're snagging a torrent or something, and it hibernates.. things go haywire for some reason. This happens on Linux too, so I just stay away from screen savers and hibernation and whatever else. Set your performance settings to high and keep the computer running normal at all times. That's how I got over this problem anyways.

axisd

---
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Nightfox wrote to Dreamer <=-

Do you think it could be caused by the video card overheating? A
little while ago I installed a program (SpeedFan) that tells you the temperatures of various chips and speeds of various fans in your
system, and it said my video card was a bit hot. I was a little concerned, but my PC is fairly free of dust inside, and the video card
fan still works..

Definitely a possibility. I've never needed anything more than stock
onboard cards, so haven't run into or troubleshooted a related problem
like this, so I have no idea what's normal, but some googling should
tell you what temp range that card's processor can handle.

Try what Internetking suggested (more airflow) to cool the processor
down, and if that works, look into getting a faster fan. Also, sometimes
it's the case that's the problem. Is it too near another source of
heat, such as the power supply?

In the case that it's not a heat issue, has anything else changed that
might seem to not be related, such as a new location for the system,
or something else new within ten or fifteen feet? Have you recently
started charging your cell phone near the system? These can also be
things that might affect a computer. I've personally in the last fifteen
years never experienced anything environmental related, but I've heard
stories of things like TV's, elevators, air conditioners -- anything
that may potentially transmit radio noise causing intermittant computer problems.

If it's not heat or environmental, and since it's likely not the driver,
and you've already troubleshooted the OS, then I would troubleshoot the
power supply. At this point, it's grasping at straws, as I would expect
other symptoms to arise from a faulty supply, but you never know. Better
to check just in case, because if you can't figure it out from the above,
you may have to swap the card out.


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Re: Monitor sees no signal af
By: Nightfox to Internetking on Sat May 07 2011 07:37 pm

.... it helps here... also see if your coolant is running out in your s if so, need to replace that....

Coolant? My PC is air-cooled, not water-cooled.. ;)

mine is not water one but a chemical inside that keep it cool ... just like common coolers in cars, etc
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Re: Monitor sees no signal af
By: Internetking to Nightfox on Sun May 08 2011 03:24:00

Coolant? My PC is air-cooled, not water-cooled.. ;)

mine is not water one but a chemical inside that keep it cool ... just like common coolers in cars, etc

I've never heard of that with a computer.. Maybe for a liquid-cooled PC setup, but I don't have one of those.

Nightfox

--- NIGHTFOX wrote --
Hi all

There's an annoying issue with my PC that I've noticed since I bought it a
2 years ago - Sometimes I'll leave it on for a while (while it's downloadi something or performing some other long task) and turn the monitor off if not around, and after doing this, sometimes when I come back after some ho and turn the monitor back on, the monitor doesn't see a signal from the PC even after I move the mouse or press a key on the keyboard (in case the sc saver was activated). If I reset the PC, the picture shows up on the scree

I'd turn off any screensavers. If that doesn't help, change the power management settings to not power off the monitor or let the machine go to sleep.


I've had a lot of problems with OSes below Windows 7 and sleep/standby
mode.



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I've had that happen before. As long as you turn your monitor off when you're not using your computer (I always do).. turn off all your power management stuff. No screen saver, or blank screen after a certain amount
of time. No hibernation, no nothing. Have your computer run normally when running, but not in use. If you're snagging a torrent or something, and it hibernates.. things go haywire for some reason.

I don't have any screen saver set up, and my power settings are set to not
turn off the monitor, and I don't have it set up to automatically hibernate.
It still does this from time to time though. Now that you mention torrents, the last time this happened, I was downloading a torrent.. I wonder if that has anything to do with it, but I'd have to wonder why torrents would cause this issue.
Nightfox

I'd turn off any screensavers. If that doesn't help, change the power management settings to not power off the monitor or let the machine go to sleep.

I've had a lot of problems with OSes below Windows 7 and sleep/standby
mode.

I am using Windows 7. And I have disabled the screen saver and the power management stuff.. so I'm not sure why this still happens - and it only happens sometimes..

Nightfox

Re: Re: Monitor sees no signal after PC on for hours
By: Nightfox to Access Denied on Mon May 09 2011 12:26 pm

I don't have any screen saver set up, and my power settings are set to not turn off the monitor, and I don't have it set up to automatically hibernate. It still does this from time to time though. Now that you mention torrents, the last time this happened, I was downloading a torrent.. I wonder if that has anything to do with it, but I'd have to wonder why torrents would cause this issue.

I've never had an issue on Linux yet, but I remember having problems with running uTorrent for a couple days and using the screen blanking screen saver after like 20 minutes, and turning the monitor off when I wasn't there. Come home from work and the damn computer must've bluescreened and rebooted on me. Not sure what it could be though. A few times of that happening and I wiped Win7 and went with Debian. :)

axisd

---
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Re: Monitor sees no signal after PC on for hours
By: Nightfox to All on Sat May 07 2011 09:11 am

There's an annoying issue with my PC that I've noticed since I bought it about 2 years ago - Sometimes I'll leave it on for a while (while it's monitor off if I'm not around, and after doing this, sometimes when I come back after some hours and turn the monitor back on, the monitor doesn't see

It's got something to do with your computer going into sleep mode when your
screen saver kicks in. Change your screen saver or disable it and check
your settings in the BIOS on putting your monitor to sleep....



---
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Re: Re: Monitor sees no signal after PC on for hours
By: Access Denied to Nightfox on Tue May 10 2011 20:26:10

the last time this happened, I was downloading a torrent.. I wonder if t has anything to do with it, but I'd have to wonder why torrents would cau this issue.

I've never had an issue on Linux yet, but I remember having problems with running uTorrent for a couple days and using the screen blanking screen save after like 20 minutes, and turning the monitor off when I wasn't there. Come home from work and the damn computer must've bluescreened and rebooted on me Not sure what it could be though. A few times of that happening and I wiped Win7 and went with Debian. :)

Interesting.. Seems like it definitely could be a torrent issue.

Nightfox