External monitor problems after update

Hello,
I'm having some difficulties with my external monitor. I'm using a Phillips 22pfl4505d f7 and the Mini Display Port to VGA adapter. My Mac is a Mid-2009 Macbook 13" Unibody 2.4 GHz Intel Core 2 Duo 4 GB 1067 MHz DDR3. Now, ever since I updated to Lion I've been having some issues. Sometimes (this isn't all the time) when I try to use my monitor, I keep getting a message on my monitor screen "Please change source resolution." When I cycle through all the resolutions offered by system preferences, the only one that works is the 640x480 option. Now I mentioned that this doesn't happen all the time, like yesterday everything worked just fine, but when I went to use it today, I keep getting that message. I updated to Lion last week, and previously to Lion I never got this message and everything worked just fine all the time. I took a peek at Console (not that I really know what I'm looking for) and kept seeing this error message "8/23/11 6:36:59.211 PM Console: kCGErrorIllegalArgument: CGSGetDisplayBounds: Invalid display 0x43000001" Any ideas about what I should do?
Thanks
G

Sorry please forgive me, I'm so exhausted I posted this in MacBook instead of MacBook Pro, I'll try to move it but if I can't I'll try to copy it and post in MacBook Pro, regardless I think there is a problem with the .11 update.
Thanks, C

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External monitor problem after Lion upgrade

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I have a 20" iMac which has a screen resolution of 1680x1050(ATI Radeon HD 2600 Pro 256 MB). I have been using an additional 168x1050 monitor(Dell 2009W) in dual screen mode. This was working fine with Leopard, Snow Leopard, but it does not work after I upgraded to Lion. The screen appears to look fine for a few seconds then blanks out for a second and repeats. The only way I can use my extra monitor is by reducing the resolution to 1360x768.
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Similar problem here with a 15" MacBook Pro purchased in late 2009. Connected to a new Dell ST2210 21.5" display via a DVI cable and Apple's mini display port to single link dvi adapter. The cable is dual link but seems to work fine the majority of the time.
When I wake my mac from sleep 1 time out of 3 I see black and white static on my external screen that only goes away when I unplug the screen or power it up and down.
I've tested another older MacBook Pro with the screen and everything works fine and when I connect with a different dvi cable I get the same issue.
When I called Apple support, they said it was a software issue and directed me to remove some .plist files in my library. I did what they said on the phone and it seemed to work for maybe 6 sleep cycles but the issue came back again. Since then I've reset the VRAM following their directions in a support article on the subject of external display static. (http://support.apple.com/kb/TS2377)
Does anyone know of a way to fix this or if Apple is actually listening? VGA works fine but I hate the quality of VGA compared to DVI. Should I look into getting an mini display port to dvi adapter from someone other than Apple?
It's annoying to have purchased a perfectly Mac compatible monitor which you really need, just to discover that Apple is having trouble with their mini display port...
Here's another guy with a similar issue and the same monitor (http://en.community.dell.com/support-forums/peripherals/f/3529/t/19330464.aspx#1 9691738). However, from the research I've done, his conclusion about it being the monitor seems to be false, especially with all the complaints here about similar issues regardless of display model.
I need an answer that does not include going back to VGA. What are your suggestions? I do have HDMI but would rather not shell out the money for a cable and adapter...

Possibly mundane Mini-DVI to VGA into an external monitor problem

Hi,
I've had a look over the interwebs regarding my problem and it seems as if it's not unusual to have external monitor problems but I'm not sure if mine is slightly different:
I had a perfectly working set up with my new Macbook (the white one, '06 model I believe), that was connected to my Hanns-G HU196D monitor via a mini-DVI to VGA adapter, no problems whatsoever. But for a couple of weeks now my Macbook just flickers a light blue colour, with nothing at all on the monitor, and my macbook is unusable until I remove the adapter. I've read about updating firmware but I can't see my desktop once the macbook is connected to the monitor so it's not possible to configure anything. I've read somewhere that my external monitor isn't compatible with this set up, but it was until a couple of weeks ago!
My Macbook's 4 months old now and since then I've bought a new mini-dvi to vga adapter and a new VGA cable, no connections seem loose on either mini-dvi port or my monitor's vga port.
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You will need to use a mini Dvi-dvi and a dvi-svideo/rca adapter.
Joy joy hallelujah.
Pardon the sarcasm...I just wasted 3 hours of my life trying to sort the issue out.
Heard a KWORLD PlusTV PCTOTV Converter SA235 USB 2.0 Interface would sort the issue out for under 40$ but it's not Mac.
Hope that helps.
~r

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External monitor problems after update

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