Sleep LED ("moon") blinking during active use?

[pjk]

It surprised the heck out of me lately when I noticed, out of the corner of my eye, the sleep or "moon" LED blinking, sometimes green, sometimes bright yellow - while I was actively using the computer. No other obvious effect I could see was going on concurrently with this, ie any slowdown or attempt to actually enter standby. (I can't remember if it was on battery or on AC at the time, but my current 9-cell battery has a very very long lifespan and I never run it down to a low charge.)

Has anyone else seen this?

T400, Win7-Ultimate-x64, Switchable Graphics, 1440x900, 2765-P3U

[jayton4]

It surprised the heck out of me lately when I noticed, out of the corner of my eye, the sleep or "moon" LED blinking, sometimes green, sometimes bright yellow - while I was actively using the computer. No other obvious effect I could see was going on concurrently with this, ie any slowdown or attempt to actually enter standby. (I can't remember if it was on battery or on AC at the time, but my current 9-cell battery has a very very long lifespan and I never run it down to a low charge.)

Has anyone else seen this?

T400, Win7-Ultimate-x64, Switchable Graphics, 1440x900, 2765-P3U

Do you have power manager and all the lenovo stuff installed?

[pjk]

Do you have power manager and all the lenovo stuff installed?

Yes, though there are some newer ones available now. When I setup this machine originally, because it was a fresh Win7 install and not a factory install, some of the Lenovo utilities didn't want to install. (ie System Update wouldn't recommend some of them when checking for updates. I noticed that System Update 5 seems to address that issue, but I haven't had time to try doing more updates yet.)

The thing is - I never ever saw this happen before, clearly something new is going on.

I had some issues with the video driver locking up or causing bluescreens recently, so I spent quite a while updating that yesterday - weird idiosyncracies with how the ATI installer works on that switchable graphics hardware.

I hate it when you have a stable platform that works perfectly reliably, and you change nothing but doing your day-to-day work, and then it becomes unstable for some mysterious reason. Unless it was some recent Microsoft patch that started causing issues.

FYI I also did some memory tests with PC Doctor yesterday and those completed fine. Was worried the reason the video driver was crashing was some RAM had gone bad or something.