t42 with external monitor - wrong resolution

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ammar
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t42 with external monitor - wrong resolution

#1 Post by ammar » Sat Apr 10, 2010 4:13 pm

Hello!
I have a T42 with ATI Radeon 7500 card (1024x768 native), and I bought an LG w2240 LCD monitor (1900x1080 native).
What I would like to have is the external display run on 1900x1080 resolution and be the primary and only display as soon as I plug it in. I've already tried the presentation director (v2.57) and had troubles getting it to recognize the correct resolution (but I managed to regedit the hex values), but when the computer puts monitor in sleep mode (or standby), after the wakeup, the external display drives in 1024x768 leaving the large portion of the monitor unused.
Is there a solution for me? I just want to have it simple, but the system keeps forgetting the external monitor setting.
tia,
Am

ARD
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Re: t42 with external monitor - wrong resolution

#2 Post by ARD » Sat Apr 10, 2010 7:27 pm

There is a setting that you can configure in the BIOS that specifies which video will output the signal.
Try that.
Also, this is the T500 section of the forum. Try the T4x forum. You should get more help there.
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Re: t42 with external monitor - wrong resolution

#3 Post by Harryc » Sat Apr 10, 2010 7:28 pm

Moved to T4X forum.

sjthinkpader
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Re: t42 with external monitor - wrong resolution

#4 Post by sjthinkpader » Sat Apr 10, 2010 9:13 pm

Did you try using DVI connection from a docking station?
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ammar
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Re: t42 with external monitor - wrong resolution

#5 Post by ammar » Sat Apr 10, 2010 9:59 pm

Hi guys!

I have no docking port, hence no DVI out.

ARD, I looked into BIOS few days ago but didn't find anything in that direction. My System Update App doesen't tell me there is a new BIOS so I guess I already have the newest one. Which BIOS menu should contain that setting? The laptop is buisy now but I will soon relook into that.

Another question - I also have a T43 with 915GM integrated graphics, 1.5GB RAM. I couldn't get that laptop to display 1900x1080 on the external monitor. Does 915GM support that resolution at all?

thanx for trying to help me out,
Am

P.S. do I need presentation director at all?

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Re: t42 with external monitor - wrong resolution

#6 Post by schmaud » Sun Apr 11, 2010 1:55 am

this is very likely a problem with the graphic card driver. Check for new drivers at the ibm site, or google for omega drivers, just be carefull there, you need an oder version, the last one does not support the 7xxx series any longer.

cheers

r.
--------------
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1400 iSeries
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eyestrain
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Re: t42 with external monitor - wrong resolution

#7 Post by eyestrain » Mon Apr 12, 2010 12:30 am

Noticed one of your T4x's has integrated graphics (lucky you!) of course below doesn't apply to it:
---

Just in case you didn't know, the docks & port replicators for the T4x models are very cheap on ebay, used or new.

You could get a port replicator, or even a small dock with key, usb hub, and special power supply, for under $20 shipped. With a little effort, the port replicator can be had cheaper than that, close to $10, and use your adapter if you can't score an extra one.

With analog, I've been disappointed with second ghost images, even though I thought analog quality was supposed to be close to digital about 10 ys ago. Maybe my setup?

Also, with digital, at least in Linux, it can be more easy to get instant hi res, without messing with drivers.

Docks do add weight and bulk, and still cost some money, go right ahead please if you want analog!
Moved to Chrome OS, so... SK-8855 USB Keyboard

sjthinkpader
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Re: t42 with external monitor - wrong resolution

#8 Post by sjthinkpader » Mon Apr 12, 2010 7:19 pm

ammar wrote:...Another question - I also have a T43 with 915GM integrated graphics, 1.5GB RAM. I couldn't get that laptop to display 1900x1080 on the external monitor. Does 915GM support that resolution at all?...
Integrated GPU doesn't support DVI. You need the ATI version to get DVI.
T60p 2623-DDU/UXGA IPS/ATI V5200
T60 2623-DCU/SXGA+ IPS/ATI X1400
T43p 2668-H8U/UXGA IPS/ATI V3200
R50p 1832-NU1/UXGA IPS/ATI FireGL T2
X61t 7762-B6U dual touch IPS/64GB SSD
X32 2673-BU6/32GB SSD
755CDV 9545-GBK Transmissive Projection LCD

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