1440x900 resolution on 945GM (GMA 950)

[brymaster]

I'm trying to get my external LCD widescreen monitor to use 1440x900 with my laptop. Here's my specs:

Windows XP
Toshiba Satellite A105
Intel GMA 950 with 945GM/GU
AOC 19MVWk 19'' LCD

I'm not positive that my LCD reports any EDID information and I'm trying to modify my igxp32.inf file like others have done but I can't figure out the DTD hex codes nor find any modeline information. Any help with this would be much appreciated! I noticed archibael seems to be the expert around here and I'm hoping to catch his attention ;)

[nelson27]

i tried those dtd's and they didn't work out

i tried moninfo again and it gave me this with the monitor plugged in and it still won't give me any EDID

thanks for all your help but it doesn't seem like this will work, thanks though!

[amos]

I have a Panasonic Toughbook (CF-Y5) laptop. I am trying to link it to an Acer 19 widescreen monitor but I cannot provide it with the required resolution (1440-900).

I follow other posting on this issue (the great and wise archibael) but simply cannot find the "igxp32.inf" on my laptop (I cancelled all XP restrictions on viewing system or hidden files).

My OS is XP SP 2 with Intel GMA 950 with 945GM/GU.

[Aaron_B_Intel]

The .inf file is found when youextract the latest drivers to your hard drive. It's in the Graphics sub-directory.

(Be careful with the 14.29 driver download-- the .zip file seems to be missing some files or have corruption or something. Best bet is to download (not "Open") the .EXE version of the drivers and then right click the .EXE file and choose "extract"-- it should act like a .zip file and extract the required files to a directory.)

Let me know if you need further help. The model number of your monitor or better yet the EDID information from MonInfo will greatly assist.

Rgds,

AB

[mic5484]

Hi all, I have a Toshiba U-205 S5034 laptop and I'm trying to get it to extend the desktop onto a Viewsonic VX2235wm with its native resolution (1680x1050 at 60Hz). The problem i'm having with using the suggested procedure is that the laptop won't allow me to install the drivers I get from Intel. When i try and find the .inf file in the Toshiba provided driver package, it's not there. Can anybody please help?

Thank you,
mp

[Aaron_B_Intel]

Which version of the drivers are you trying to install from Intel when your laptop "won't let" you? If it's the .Zip version of 14.29, see above. You need to get the .exe version of 14.29 and extract them with WinZip in order to modify the .inf.

As for the Toshiba drivers, I downloaded the latest Vista Display drivers from the Toshiba website for your model, and (similar to the 14.29 Intel drivers above) I extracted the files out of the .exe with WinZip. The .inf file was in the Graphics subdirectory where I extracted them.

[jaj22x]

Ran into this problem with a GNR 1440x900 TFT on an i945 desktop machine (Foxconn motherboard), so I guess it's not just laptops. Moninfo reported nothing and hacking the DTDs in the registry didn't reveal any extra modes. I tried editing the inf file and ran into the corrupt zip issue.

It's a customer's machine so I don't have easy access to it - might have to install a PCI-E video card if this isn't fixed soon.


--
John Jordan

[nelson27]

ok so i keep trying this and editing the .inf file, but when i restart none of the resolutions actually show up that i editing in that file. All of the resolutions that were in the file to begin with still show up like i didn't even make any changes at all.

I read the website you sent me and did all those things, but it still seems like i can't get the resolutions to even show up in the menu. Am I doing something wrong?

[Aaron_B_Intel]

Nelson,

Are the changes you've made making it into the registry?

If you go to a command prompt and type "regedit", then choose Find and look for "DTD", you should find that the DTD entries are all populated with what you put in the .INF file.

[prioadhi]

Hallo...
I do have a same problem, my fujitsu siemens could not set the correct display...
Mine is amila pro v3205, chipset intel GMA 950
by default from factory it's with XP profesional.. and now i m using vista home basic 32 bit, but some how the graphic card doesnt fit it...
i need assistance....

for private help, u can contact me by email dimasz_prio@yahoo.de

thanks in advance

[Aaron_B_Intel]

Would be happy to help you, prioadhi. Let me know what monitor you're trying to drive,what resolution you want, and if you can get an EDID from MonInfo when connected to it, that would be divine.

[torusknot]

I have a Fujitsu-Siemens Amilo Si 1520 with the GMA 950 chipset. The problems described here seem very familiar. How many of you who have problems with getting the EDID have this kind of setup:

display (D-SUB) --> cable --> adapter --> computer (DVI)

I am not able to read the EDID information from a perfectly normal and modern LG F900P CRT-monitor. The same thing happened with a Samsung LE32S73BD 32" LCD-TV. Therefore I had to drag them to another room and read the edid with another computer and then do the DTD trickery with the drivers.

EDIT: it seems that there are a few people with straight d-sub connectors and still no EDID coming through. Is there anyone with GMA950 and pure DVI setup having resolution problems?

I wonder if there is a double design flaw resulting in this catastrophe...

a) Someone has made a mistake and EDID is not coming through from devices from analog D-SUB outputs. If there is no EDID, it means that custom resolutions are needed...

b) ... and there are none. The drivers for GMA 950 do not support custom resolutions. I can not set 1280x1024 or 1600x1200 or any other than the predefined resolutions which have been decided by someone responsible for the VBIOS. Now the parameters need to hacked in by hand...

[Aaron_B_Intel]

The drivers for GMA950 do support custom resolutions, but the laptop provider can specifically restrict some resolutions in the BIOS. You can get around this by moving to a slightly different rez: 1020x768 instead of 1024x768, for example.

[torusknot]

I have never been able to set a resolution which was not available in the display properties without changing the driver configuration .inf file by hand. I do not regard this as a "feature for custom resolutions" but a hack. The laptop provider would have then restricted almost all resolutions, which seems strange (although possible).

For example:
I plugged in a LG F900P monitor to my Fujitsu-Siemens Si 1520 featuring 945GM chipset and graphics. It is a 19" CRT-monitor with D-SUB input. I wanted to use 1280x1024 resolution. The display properties did not let me choose that resolution even though it is a very common one. It only let me choose from the following: 800x600, 1024x768, 1280x720, 1280x768, 1280x600, and 1280x800. Also it offered only one refresh rate which was 60hz. I went through all possible options from the screen settings ("show unsupported resolution" etc.). Moninfo from Entech returned NULL EDID information from the monitor on my laptop with 945GM (GMA 950).

I then read the EDID with another computer (it had an old nVidia card) and inserted the bytes to igdlh.inf (I am using Windows Vista). Then I installed the drivers and now I could choose other resolutions. I am quite sure that non-technical users have trouble doing this hack, if they are even able to.

Please let me know if there is some other way to achieve the above.

[Aaron_B_Intel]

I have never been able to set a resolution which was not available in the display properties without changing the driver configuration .inf file by hand. I do not regard this as a "feature for custom resolutions" but a hack.

Fair enough. I've not had this problem: when I unclick "Hide Modes This Monitor Cannot Display", I get every damned thing, and the ability to do single pixel changes (most graphics cards must be in multiples of 8) is a bonus for me. But I can see why you might consider it a hack if it's not that easy for you.

[torusknot]

archibael:

Fair enough. I've not had this problem: when I unclick "Hide Modes This Monitor Cannot Display", I get every damned thing, and the ability to do single pixel changes (most graphics cards must be in multiples of 8) is a bonus for me. But I can see why you might consider it a hack if it's not that easy for you.

I can not resist the desire to note that as a developer and an experienced software engineer it is very easy for me. That said, I do not get any satisfaction wasting my time configuring some trivial piece of hardware. I also feel for those who are not able to modify their driver files. Therefore I think that everyone would win, if the drivers and the hardware would work more smoothly (I have never had this kind of trouble with other major graphics hardware vendors).

[Aaron_B_Intel]

Wow. I have. Prior to Catalyst, ATI drivers were the buggiest in the business. They've made significant improvements, but even with vendors like Nvidia every time they release a driver which fixes one issue they break something else.

That said, it's no secret Intel's behind in this game. Their focus on graphics has been the corporate market and it's only comparatively recently that they have made a real push toget into consumer space, and it's obvious they're still struggling with the robustness, functionality, and overall user-friendliness of their driver software. The fact that the VideoBIOS still dictates which graphics modes are available is the perfect example of this.

[aong0827]

Hi,

I have a sony vaio with a gma 950 vid card running on Vista Home Premium, I'm plugging it into a 24inch westinghouse lcd and the highest resolution i could get is 1920x1050, my lcd's native resolution is 1920x1200.. is there any work around on how I can increase the resolution?

I have another laptop with the same vid card but is on Windows XP, its max resolution is 1920 x 1200..

Thanks!

[Aaron_B_Intel]

aong0827,

Download MonInfo from http://www.entechtaiwan.com/util/moninfo.shtmand report back the results from your monitor. We can probably get it working from there.

[aong0827]

Thanks for the really quick reply. Here's what I'm getting on moninfo:

Monitor
Windows description......... Generic PnP Monitor
Manufacturer description.... L2410NM
Manufacturer................ Westinghouse

Plug and Play ID............ WDE5180
Serial number............... n/a
EDID data source............ I2C bus (real-time)

Manufacture date............ 2007, ISO week 6
EDID revision............... 1.3
Display type and signal..... Analog 0.700,0.000 (0.7V p-p)
Sync input support.......... Separate
Screen size................. 520 x 320 mm (~25")
Power management............ Active off/sleep

Color characteristics
Display gamma............... 2.20
Red chromaticity............ Rx 0.644 - Ry 0.348
Green chromaticity.......... Gx 0.286 - Gy 0.603
Blue chromaticity........... Bx 0.143 - By 0.070
White point (default)....... Wx 0.313 - Wy 0.329

Timing characteristics
VESA GTF support............ Not supported
Horizontal scan range....... 30-80kHz
Vertical scan range......... 56-75Hz
Video bandwidth............. 160MHz
Extension blocks............ n/a
Timing recommendation #1.... 1920x1200 at 60Hz
Modeline................ "1920x1200" 154.000 1920 1968 2000 2080 1200 1203 1209 1235 +hsync -vsync
Timing recommendation #2.... 1920x1080 at 60Hz
Modeline................ "1920x1080" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync

Standard timings supported
640 x 480 at 60Hz - IBM VGA
640 x 480 at 67Hz - Mac II
640 x 480 at 72Hz - VESA
640 x 480 at 75Hz - VESA
720 x 400 at 70Hz - IBM VGA
800 x 600 at 56Hz - VESA
800 x 600 at 60Hz - VESA
800 x 600 at 72Hz - VESA
800 x 600 at 75Hz - VESA
1024 x 768 at 60Hz - VESA
1024 x 768 at 70Hz - VESA
1024 x 768 at 75Hz - VESA
1280 x 720 at 60Hz - VESA
1280 x 1024 at 75Hz - VESA
1280 x 1280 at 60Hz - VESA
1440 x 1440 at 60Hz - VESA
1440 x 1440 at 75Hz - VESA
1680 x 1680 at 60Hz - VESA
1920 x 1080 at 60Hz - Westinghouse
1920 x 1200 at 60Hz - Westinghouse

Raw EDID base
00: 00 FF FF FF FF FF FF 00 5C 85 80 51 00 00 00 00
10: 06 11 01 03 68 34 20 78 2E C5 85 A4 59 49 9A 24
20: 12 50 54 BF CF 00 81 00 81 C0 B3 00 95 00 95 0F
30: 01 01 01 01 01 01 28 3C 80 A0 70 B0 23 40 30 20
40: 36 00 06 44 21 00 00 1A 00 00 00 FD 00 38 4B 1E
50: 50 10 00 0A 20 20 20 20 20 20 02 3A 80 18 71 38
60: 2D 40 58 2C 45 00 06 23 21 00 00 1E 00 00 00 FC
70: 00 4C 32 34 31 30 4E 4D 0A 20 20 20 20 20 00 48

Display adapter
Adapter description......... Mobile Intel 945GM Express Chipset Family
Adapter device ID........... 0x27A28086
Display settings............ 1920x1080, 32bpp

Text at 1920x1080 looks so slim..

Thanks again!

[Aaron_B_Intel]

Okay, your DTD for 1920x1200 is

28 3C 80 A0 70 B0 23 40 30 2036 00 06 44 21 00 00 1A

Comma delimit it, add ",37,01" to the end, and follow the instructions here on how to get new resolutions on Intel graphics chipsets.

[aong0827]

Hi,

I have successfully added the dtd settings and verified it in regedit. But I'm not seeing this new setting..the list all modes for the adapter is still only showing upto 1920 x 1080..am I doing something wrong?

Thanks!