What PC model and operating system?

What USB port is the wireless transmitter plugged into?

Hi.  I'm having the same problem on my 1521 laptop.  Did you ever get an answer or a fix to the problem?  Thanks

I'm having the same problem with Windows 7 on my Dimension 410. It wakes up from sleep, but the mouse is frozen. Yeah, latest drivers and all that.....  Sleep mode worked fine on Vista.

UPDATE: Turns out it will never work. Dell has decided that this 2.5 year old computer is not going to be upgradable to Windows 7, so no BIOS upgrades which is probably what I need to fix this.  This computer is not on Dell's list of computers ready for Windows 7 even though the software advisor showed no problems.  Looks like my next computer won't be a Dell.  The problem turned out to be the Microsoft mouse; specifically the hardware, the software is fine. Plugging in a different mouse fixed the problem.  I don't really care for this mouse (it's the standard Dell one, too small for me) so now all I need to do is find a decent one that has a wire on it. I just don't understand wireless mice/keyboards for desktop computers. What's the point?

I have an Inspiron 530 that came with Vista.  I upgraded to Windows 7 last Sunday.  Now when the computer comes out of sleep I have to reboot my DSL modem to make the ethernet lite come back on the modem.  Also worked fine on Vista.

John

I have same problem with brand new Studio 15 running Windows 7.  When I lift the lid after computer has gone to sleep mode, it just get a gray screen. Computer is totally unresponsive.  I can lower and lift lid several times but no response.  I have to turn off the computer with the power button and turn it back on.  This seems like a bug to me - just got the computer on Oct 29.

i too encounter U2410 monitor sleep problem. It goes on in a cycle repeatedly, no picture.

I am using a Nvidia GTX 260 connected via DVI. I read that some people in forums are also having this issue.

It has got nothing to do with using either MBP or PC desktop. Probably a firmware bug.

i too encounter U2410 monitor sleep problem. It goes on in a cycle repeatedly, no picture. I am using a Nvidia GTX 260 connected via DVI. I read that some people in forums are also having this issue. It has got nothing to do with using either MBP or PC desktop. Probably a firmware bug.

In Control Panel/Device Manager, check the power management settings for the network interface card. All boxes should be un-checked.  (I had this problem too, and this fixed it. This is another Win 7 bug, I think)

Did you ever get an answer? I have the same problem with a Latitude E6400: when it goes to sleep, the only way to bring it back is a complete reboot. In my case there is no mouse and there is no sleep option for network adapter card, so many of these other answers do not apply. I can't believe the only answer is, "turn off all sleep modes", which is what Dell tech support's database says.

I have the same issue with my XPS 9000 that is running Windows 7. It happens frequently (2 -3) times per month that it will not wake up after it has gone into sleep mode It has happended twice in this last week.. The only way to recover is completely power down and restart the computer. Is this a known hardware or software issue? I would also appreciate any help to correct this problem.