Wake issues.

I frequently place my computer into standby to conserve power. After installing a new PSU, the computer now has issues with waking, where it will power up for a second and then cease. Pushing the power button is a wild card where it will either wake or just power down completely. The length of time it has been asleep appears to be a factor.

I updated the BIOS and loaded the defaults. It did not help. Should I clear the CMOS? The PSU seems to be handling heavy loads relatively well and the machine now responds immediately when I power it up instead of there being about a second of lag before the fans kick in. (compared to the PSU it replaced)

MB: Sabertooth P67 (this motherboard is known for the wake issue, but I thought I resolved it with a BIOS update a year ago)
PSU: Corsair HX750

To tell the truth, I do not trust sleep or hibernate in a desktop. I've just had too many weird mobo failures when using those features.

These days, I'm strictly binary with a desktop: It's on or off. I don't use sleep mode except on laptops, which are designed for it. Curious to hear what full-time hardware geeks such as @Xiahou think of this issue.

I'm afraid I don't have much to add either. I use sleep mode constantly on my laptops, but never on my desktops.... I assume it works fine, but I've never had reason to use it. If I get some time, I'll see if I can find any info...

Sounds like a bad PSU to me. RMA it?

Quote:

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Originally Posted by Whacker

Sounds like a bad PSU to me. RMA it?

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FWIW, I lost two mobos on PCs that were in sleep mode. So it's not necessarily the PSU.

I am with Lemur, I have always had issues with "sleep" modes.

Computers like Humans seem to function better with a good nights rest and powered down. Napping for a few hours randomly during the day with no power down makes you and the computer far more error prone.

Quote:

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Originally Posted by Whacker

Sounds like a bad PSU to me. RMA it?

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See, this is the thing. NOTHING is wrong with it except for this one thing. It powers everything and my games run well enough. So long as it is not asleep, it is fine.

Meh, I can't lose anything to an RMA. What do I say is the problem? That it won't wake?

I should note that the previous PSU, a Rocketfish 700, did not have this issue. Ironically, I was concerned about the fact that the Rocketfish may eventually fail.

My PSU is a Corsair TX 650. Just to check, I tried putting my PC to sleep and waking it again- works fine. Not sure that it helps you much, but there it is.

Quote:

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Originally Posted by Xiahou

My PSU is a Corsair TX 650. Just to check, I tried putting my PC to sleep and waking it again- works fine. Not sure that it helps you much, but there it is.

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The oddest thing, is that this is the case with me. Apparently if I leave it for more than ten minutes, it can't wake.

OK. I RMA'd the thing and Amazon was really cool about it. They waived 1-day shipping. This makes me feel really bad since THE REPLACEMENT DOES THE SAME THING. There are a few things that we have learned from this adventure:

1. Amazon is cool.
2. The Dynex NIC apparently died at one point and was preventing the HD from spinning somehow.
3. The P67 has really bad wake issues, but there is no reason to replace it at this point.

Learn something new every day.

Just chipping in here.

My desktop doesn't wake up successfully unless there is less than 2GB of RAM (usually has 3). That can be removing a stick physically OR limiting the amount of memory via msconfig advanced settings. That requires a reboot though so it's a long way from a fix. I only discovered it because I play Medieval on limited RAM so I can get the higher resolutions.
Anyway point is it could be more of a software than hardware problem, but that's just a guess since I don't know what msconfig actually does to make the extra gig disappear.