How can 915GM drive wide screen LCD Samsung 2232GW @ 1680x1050

[ratha_th]

Hello Expert,

I have a problem with my new LCD monitor Samsung 2232GW with Intel 915GM that there are no 1680x1050 resolution to be selected.

I try to use DTD Calculator with DTD value that has searched in the forum. These are my DTD that are on "Registry Hack" tab.

No of DTDs = 3
DTD 1 = 01 1D 80 18 71 1C 16 20 58 2C 1A 00 00 00 00 00 00 86
DTD 2 = 21 39 88 38 62 1A 27 40 68 B0 36 00 B1 0F 11 00 00 1C
DTD3 = 7C 2E 90 A0 60 1A 1E 40 30 20 36 00 D9 28 11 00 00 1E

Who can help me to solve this problem please explain in step by step.

Thank you.
Ratha

[ratha_th]

And following is the output from Intel driver utility.

Intel Graphics Media Accelerator Driver for Mobile Report

Report Date:02/13/2551
Report Time[hr:mm:ss]:00:48:43
Driver Version:6.14.10.4764
Operating System:Windows XP* Professional, Service Pack 2 (5.1.2600)
Default Language:Thai
DirectX* Version:9.0
Physical Memory:2038 MB
Minimum Graphics Memory:8 MB
Maximum Graphics Memory:128 MB
Graphics Memory in Use:11 MB
Processor:x86 family 6 Model 13 Stepping 8
Processor Speed:798 MHZ
Vendor ID:8086
Device ID:2592
Device Revision:03

* Accelerator Information *

Accelerator in Use:Mobile Intel 915GM/GMS,910GML Express Chipset Family
Video BIOS:1220
Current Graphics Mode:1400 x 1050 True Color (60 Hz)

* Devices Connected to the Graphics Accelerator *

Non Active Notebook Displays: 1

* Notebook *

Monitor Name:Plug and Play Monitor
Display Type:Digital
Gamma Value:3.54
DDC2 Protocol:Supported
Maximum Image Size:Horizontal: Not Available
Vertical: Not Available
Monitor Supported Modes:
1024 x 768 (60 Hz)
Display Power Management Support:
Standby Mode:Not Supported
Suspend Mode:Not Supported
Active Off Mode: Supported

* Other names and brands are the property of their respective owners.

[Aaron_B_Intel]

DTD 2 and 3 that you have defined are 1680x1050; DTD 1 is 1920x1080. Exactly what problem are you having?

[ratha_th]

Hi archibael,

Thank you very much for your kind help.

Do you mean want me delete DTD1 ?

After delete DTD1 and move DTD2 to 1 and DTD3 to 2, it still can not drive 1680x1050 on my LCD and still just 1400x1050.

And the follow is the output from MonInfo.

Monitor
Hardware information........ n/a
Windows description......... SyncMaster 2232BW/2232GW,SyncMaster Magic CX2232GW(Analog)

Display adapter
Adapter description......... Mobile Intel 915GM/GMS,910GML Express Chipset Family
Adapter device ID........... 0x25928086
Display settings............ 1400x1050, 32bpp

User/computer information
Registered user name........xxx
Registered organization.....xxx
Network user name...........xxx
Network computer name....... xxx
Windows version ............ Windows XP
Windows build .............. 5.01.2600 Service Pack 2
Installation date .......... 11/6/2007 12:00:00

[Aaron_B_Intel]

If your laptop resolution maxes out at 1400x1050, the limitation may be that the drivers will only display the lowest of the two. Certainly that is the case when you're trying to clone the display. Try setting the external monitor to be the primary or possibly shut off the laptop screen entirelyand see if 1680x1050 shows up.

[ratha_th]

Hi archibale,

Thank you so much for your reply, I have tried to shut off laptop screen. It has no 1680x1050 to be selected, just still only 1400x1050.

And in case of clone the display, It can max out at 1600x1200.

How can I go? please advise.

[Aaron_B_Intel]

I'm out of ideas, ratha_th... sorry! :(

[ratha_th]

Hi archibael,

Thanks a lot for your help, please let me ask you again.. should I have EDID of my monitor first? Is it needed to calculate DTD?

However I have tried to find iton MonInfo but there are no any raw EDIDs on it.

Regards,
Ratha

[Aaron_B_Intel]

Ratha,

It would be nice to have the EDID, but my concern is that even when you're programming 1680x1050 into the regstry it still doesn't seem to be showing up for you.