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Help with 1920 x 1200, 60Hz for external monitor?

neilhart

neilhart

macrumors 6502
Original poster
Oct 11, 2007
289
0
SF Bay Area - Fremont
Please someone tell how to get an external 24" monitor a signal at 1920x1200 at 60Hz.

The platform is a 2.4 GHz 17" MBP running 10.5.3
The video is GeForce 8600M GT
VRAM is 256 MB
Internal display is 1680x1050
Boot ROM is MBP31.0070.B07
SMC version is 1.18f4

Trying to extend the desktop to the 24" monitor which only takes 60 Hz.
The current driver only gives me 1920 x 1200 at 76 Hz or 85 Hz.

The best that I can currently get is 1920 x 1080 at 60 Hz

Of interest in BootCamp, XP Pro Sp2, I can extend the desktop on this machine to this monitor at 1920 x 1200 at 60 Hz.

Thank you in advance,
Neil.
 
Using 1920x1200 60hz monitor

Normally Apple is pretty much a stand up company, but on this issue they are not a lot of help. I even called Apple Care and pretty much got dismissed out of hand with some reference to buying an Apple monitor. When you consider all the reasonably priced 24 inch monitors are pretty much 1920x1200 60hz I hope they fix this in a future release.

All that being said, there is a quick and easy fix.

Download SwitchResX (just google it) and install it. You can go to the display and click the custom button and add a custom resolution. Save it and after a reboot it becomes available in the monitor preference.

It is shareware and does a lot more (but I have not really figured out what all) besides add custom resolutions. You get a 10 day trial and its about $30 to register.

If you just add a resolution I think it updates a table in OSX and I don't think you need to keep SwitchResX unless a future update would wipe out the table.

Good luck.
 
QRP said:
Normally Apple is pretty much a stand up company, but on this issue they are not a lot of help. I even called Apple Care and pretty much got dismissed out of hand with some reference to buying an Apple monitor. When you consider all the reasonably priced 24 inch monitors are pretty much 1920x1200 60hz I hope they fix this in a future release.

All that being said, there is a quick and easy fix.

Download SwitchResX (just google it) and install it. You can go to the display and click the custom button and add a custom resolution. Save it and after a reboot it becomes available in the monitor preference.

It is shareware and does a lot more (but I have not really figured out what all) besides add custom resolutions. You get a 10 day trial and its about $30 to register.

If you just add a resolution I think it updates a table in OSX and I don't think you need to keep SwitchResX unless a future update would wipe out the table.

Good luck.
Click to expand...


Is this a fairly common proplem? I have a 2.2 SR MBP 15 and have never had a problem connecting to any monitor. I have a Samsung 2493HM 1920*1200 and worked immediatly. We also have a 32 inch Sharp HDTV with HDMI or DVI@ 1920*1080. No problems other than needing set the TV to Dot by DOT to handle the Mac input.

I don't understand why this would even be an issue.

Cheers,
 
panzer06 said:
Is this a fairly common proplem? I have a 2.2 SR MBP 15 and have never had a problem connecting to any monitor. I have a Samsung 2493HM 1920*1200 and worked immediatly. We also have a 32 inch Sharp HDTV with HDMI or DVI@ 1920*1080. No problems other than needing set the TV to Dot by DOT to handle the Mac input.

I don't understand why this would even be an issue.
Click to expand...

Same here. I've never had an issue like this under OS X on multiple monitors/TVs.
 
I have the same problem. I have a G5 that I use with my HP 2335 23" display. The G5 runs the monitor at 1900x1200 - this is the native resolution.

When I plug my MacBook Pro (unibody) into the same monitor via Apple Mini Display to VGA adapter I only have the option to use 1920x1080 - non-native resolution. This results in a blurry screen with vertical pin stripes.

I know the Mini-Dispaly to DVI adapter works perfectly - MBP supports native 1920x1200 resolution on the external monitor. Why would mini-display to DVI support my external monitor's resolution, but not mini-display to VGA?
 
ox4dboy said:
I have the same problem. I have a G5 that I use with my HP 2335 23" display. The G5 runs the monitor at 1900x1200 - this is the native resolution.

When I plug my MacBook Pro (unibody) into the same monitor via Apple Mini Display to VGA adapter I only have the option to use 1920x1080 - non-native resolution. This results in a blurry screen with vertical pin stripes.

I know the Mini-Dispaly to DVI adapter works perfectly - MBP supports native 1920x1200 resolution on the external monitor. Why would mini-display to DVI support my external monitor's resolution, but not mini-display to VGA?
Click to expand...

Mini-displayport (and regular displayport) has limited support for VGA.
 
ox4dboy said:
I have the same problem. I have a G5 that I use with my HP 2335 23" display. The G5 runs the monitor at 1900x1200 - this is the native resolution.

When I plug my MacBook Pro (unibody) into the same monitor via Apple Mini Display to VGA adapter I only have the option to use 1920x1080 - non-native resolution. This results in a blurry screen with vertical pin stripes.

I know the Mini-Dispaly to DVI adapter works perfectly - MBP supports native 1920x1200 resolution on the external monitor. Why would mini-display to DVI support my external monitor's resolution, but not mini-display to VGA?
Click to expand...

Did you download the MDP-->VGA Firmware update that Apple dropped today? You have to have the adapter and monitor hooked up to get the update to appear from what I've read around.
 
An Update

So time moves on. I sold off the 17" MBP after purchasing the 15" UMBP last October. At work I use an Apple MDP to DVI adapter to drive one Dell 20" LCD at 1600 x1200. I use an EVGA USB to DVI adapter to drive the second identical monitor. And I use the UMBP open; this gives me three screens in OSX and XP.
Sweet deal.

Note at home I use the MDP to DVI adapter to drive the 24" 1920 x 1200 LCD display.

Neil
 
neilhart said:
So time moves on. I sold off the 17" MBP after purchasing the 15" UMBP last October. At work I use an Apple MDP to DVI adapter to drive one Dell 20" LCD at 1600 x1200. I use an EVGA USB to DVI adapter to drive the second identical monitor. And I use the UMBP open; this gives me three screens in OSX and XP.
Sweet deal.

Note at home I use the MDP to DVI adapter to drive the 24" 1920 x 1200 LCD display.

Neil
Click to expand...

could we get a link of that evga usb to dvi thing please?
2 monitors on my MBP would be awesome :D
 
doing 1920 x 1200 60 hz or quite with PB 17 inch 1 Ghz

neilhart said:
Please someone tell how to get an external 24" monitor a signal at 1920x1200 at 60Hz.

The platform is a 2.4 GHz 17" MBP running 10.5.3
The video is GeForce 8600M GT
VRAM is 256 MB
Internal display is 1680x1050
Boot ROM is MBP31.0070.B07
SMC version is 1.18f4

Trying to extend the desktop to the 24" monitor which only takes 60 Hz.
The current driver only gives me 1920 x 1200 at 76 Hz or 85 Hz.

The best that I can currently get is 1920 x 1080 at 60 Hz

Of interest in BootCamp, XP Pro Sp2, I can extend the desktop on this machine to this monitor at 1920 x 1200 at 60 Hz.

Thank you in advance,
Neil.
Click to expand...

I have the same problem connecting Samsung 2443 on PB 17 Ghz and I have choose 1920 x 1400 60Hz and wide image on Samsung screen and it Work fine: the screen is receiving the good image with no distortion and native resolution using DVI adaptor and connecting to analogic entrance at the screen
 
ox4dboy said:
I have the same problem. I have a G5 that I use with my HP 2335 23" display. The G5 runs the monitor at 1900x1200 - this is the native resolution.

When I plug my MacBook Pro (unibody) into the same monitor via Apple Mini Display to VGA adapter I only have the option to use 1920x1080 - non-native resolution. This results in a blurry screen with vertical pin stripes.

I know the Mini-Dispaly to DVI adapter works perfectly - MBP supports native 1920x1200 resolution on the external monitor. Why would mini-display to DVI support my external monitor's resolution, but not mini-display to VGA?
Click to expand...

This was a bug in 10.5.7 that worked correctly in 10.5.6 and was fixed in 10.5.8
 
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