Monitor display will not wake up after sleep.
I recently purchase Dell Inspiron 570 with AMD x4 (630) processor
with Windows 7 (64bit) OS. Everything worked great except for the
Power program. Once in the Sleep mode, it will appear to wake up the
computer via the keyboard or mouse, but not the Monitor display.
Strange because the amber light on the monitor turns white but
computer does not activate any display.
The amber light on the computer turns white with mouse movement,
but apparently the computer is only activating part of the wake up
sequence. I tested to see if the computer would accept key board
strokes (even though the screen was black) using “Windows key”
>”taping the right arrow 3 times” > and then the ” r “
key. My desktop set up is such that this should have restarted the
computer if the machine was loaded minus the monitor signal. No
response. Even though the computer light is white, I now wonder if
the hard drive actually cranked back up?
I have device manager configured to allow the keyboard and mouse
to wake up the computer, but those hard shutdowns with the Power
Button are not the way too go.
My research so far shows that this is a wide spread problem, and I
have tried various suggested solutions (ie changing power settings,
), but the only thing that keeps this machine up and going is a high
performance setting...no sleep ...no hibernation...no hybrid sleep.
I don't like this kind of work around and hope someone has found the
answer as to why this happens to some Windows 7 computers and not to
I had been using two inexpensive emachine desktops with AMD x2
processors and never had this problem. One was upgraded from Vista to
Windows 7, and the other upgraded from XP to Windows 7 with never a
single glitch. My Dell ST2310 monitor work perfect with the old
machines so don't think it is a monitor problem.
I hope this is not a Dell hardware problem, and can be solved with
some register hack or firmware change. Would appreciate any New
information on the Bug.
I found my error and the problem is
corrected for now hopefully.
I commonly use a KVM switch to connect
two computers to a single Monitor, Keyboard and Mouse. The KVM is
switched by Clicking the “Scroll Lock” key on the Keyboard. The
Dell 570 has problems with this switching under certain steps in the
power setting sequence. The problems only seem to happen when the
machine in the “Sleep” mode. If the KVM is switched when machine
is OFF or in Hibernation everything works OK... as the computer can
not sense the “Scroll Lock” key action.
This is what I now do that works. (no
KVA involvement, and Power setting at default “Balanced”)
When computer is in Sleep mode, do one
of the following to wake it up:
Click a key on the Keyboard. (ie
Move the Mouse around, or...
Press the Power Button (do not
hold it in) Warning... however, if the computer is active and not
asleep pushing the power button will but the computer into
The Power Button is Amber when in Sleep
The Power Button is White when awake
The Power Button is Off when in
When computer is in Hibernation, Press
the Power Button (do not hold in) to bring out of Hibernation.
To put computer into Hibernation, Press
the Power Button (do not hold in).
The Power Button light is off when in
Hibernation (same as when computer has been shut down, but pushing
the button again results in a “resuming windows” condition rather
than the regular Boot (startup) process.
Time will tell.
Chastom (aka chast)
Well, the problem returned worse than
ever ! Everything seemed to work normal except the monitor would not
display. Monitor power button turned white and back lights on the
monitor activated but no display...just a black screen. Computer
light up, normal loading flashes and hard drive hum.
So...out of frustration, I downloaded
the latest Catalyst Control Center (CCC) from AMD
...and Installed it. Some said to
install over the existing CCC, some said uninstall the old CCC first,
some suggested uninstalling the CCC and leaving it off and then
download and install the AMD driver pack only. I opted to uninstall
the old 9.7 CCC version and then Install the New version CCC 10.7
My Power problems are now solved
and machines (2 identical 570 AMD quad core) and Monitor load right
up. I have no earthly idea how this is related to the monitor wake
up action...but it worked for me and I just wanted to pass this along
in case there is some other person out there pulling their hair out.
Just remember to reboot between
actions, and to open Monitor in the Control Panel when finished and
detect and then click OK on the Monitor settings page. Otherwise
the task bar may be only partially visible, and screen streatched
If anyone has an understanding as to
why this AMD driver has had that effect on Power action control,
please let me know. I'll post back if the problem ever returns.
I personally disabled and turned off
any thing that deals with hibernate. With the way I use computers it
is just not a practical desktop feature. A little sleep time is ok
Inspiron 570 desktop
Windows 7 Home Prem 64bit
6 gig ram
AMD Athlon II X4 (630)
ATI Radeon HD 4200
chast (aka chas)