[unlock request] Video Bios on Acer Aspire One D250 BIOS v1.29

[Maik007]

Hello, i have a broken screen on my AAO D250 - original one (LTN101NT02) with the resolution 1024x600. I buy a new one LP101WH1-TLA with 1366x768.
I do not have the schematic for the oroginal panel LTN101NT02, but i checked the schematic for compatible LP101WSA
Both have the LVDS 40pin connector and both have same LVDS signals.
I checked the connected pins on the 40 pin connector on the back side of panel and there are connected all that needed.
But when i connect the new one, i have only blank screen all the time from the start of the netbook. I can change the backlight in a few steps, but it doesn't work fine.
The external VGA works fine, when i boot into WXP and start the Intel icon, it shows the correct info, that the panel has resolution 1366x768. Even if i change the resolution the panel did not show anything.

I search through the internet and find out that this maybe caused because of:
1) the old Video BIOS
2) the BIOS has whitelisted only 1024x600 resolution on internal LCD.

I attached the screenshot about the info of my video card


I know that there was a AAO D250 in Norway with screen 1280x720 (http://liliputing.com/2009/07/acer-launc...creen.html)

So why not use the 1366x768 panel?

I tried to decompress the BIOS but with no luck. Can anyone help me with this problem / i.e. unlock the resolution in BIOS, decompress the BIOS or update the Video bios.

It costs me the 80Euros and now i am stuck with the blank screen.

Thank you!

[Maik007]

i have made a small success - i compile a new IEGD driver for WinXP, so the panel is now working

The only problem for now is, that i can access BIOS only with external display connected.

The problem is in the BIOS, so updating the vBIOS to accept the new panel would help.

[kovaL3000]

Hello,

can you submit your drivers? Do you know if it will work with windows 7? I'm doing the same upgrade, to the LP101WH1-TLB1.

Did you maybe found the solution for accessing BIOS without external display?

BRGDS, MK

[Maik007]

Hi,

here is the link to intel software - IEGD and EMGD drivers and software

http://www.intel.com/p/en_US/embedded?iid=hdr+embed

I am not sure if the IEGD drivers would work on Windows 7.

As i wrote before, i was successful to make work the internal display in the system, when i connect the external one, i can access BIOS, but the external did not work in windows for me.

When the drivers are compiled, you have to choose many options, so i did only to work the internal.

I do not have a time to play with it, but i would like to try to work the external display

If you want, i can send you my last working driver (only internal screen in windows).

Also the brigtness is working only on minimum and maximum value -this should be solved by hacking the BIOS or step-by-step compile the drivers. My knowledge of the LVDS display is quite limited, so i am happy that i make it work as it is.

[Maik007]

Yesterday i spent few hours playing with this problem, here is what i found out.

When the system boot up with original flat panel and then i connect the new one, the brightness is working OK - every change of brightness up and down works.

The original intel driver provide with the Acer shows these informations about the flat panel:
original LTN101NT02 / HD LP101WH1-TLA
Type: Digital / Digital
Serial number: SEC554e / LGD01eb
DDC2: Yes / Yes
Gamma: 2,2 / 2,2
Connector: LVDS / LVDS
Type: LFP / LFP
Resolution: 1024x600 / 1366x768


The other thing i found out is that Acer did some modification to several BIOS updates about the flat panels, i.e.:

MODEL NO. : KAV10 RELEASE DATE : 01/20/2009
Major Version : V0.02
BIOS:
4). Add LG LP101WSA-TLA1 Panel
EC:
Modified:
1.>Update Panel brightness table.


MODEL NO. : KAV60 RELEASE DATE : 02/03/2009
Major Version : V0.03
BIOS:
2). Fix Panel ID to match EC setting.
5). Fix LG panel brightness only 2 level.
EC:
Fixed
Modified:
2.>Update Panel brightness table.
0x01 AU B101AW03 V0
0x02 LG LP101WSA-TLA1
0x03 SEC LTN101NT02-A01
0x04 CMO N101L6-L02
0x05 SEC LTN101AT01-A01


MODEL NO. : KAV60 RELEASE DATE : 02/26/2009
Major Version : V0.05

BIOS:
1). Add Gint15 funtion for panel 1280x720 resolution.


As you see, the Acer probably supports the flat panel with resolution 1280x720 also, but no 1366x768

I think the right way is to modifiy Video BIOS than play with IEGD drivers

Can someone help with extracting and editing the BIOS? thanks in advance.

[Mick]

Please provide a link to the BIOS download, you can find this on the manufacturers website.

Thanks.

[Maik007]

Here is the link to unlocked BIOS by CamiloML, where are unlocked some new options.
http://www.mediafire.com/download.php?awas6u8r05y7d3z



here is the link to original BIOS at acer site:
http://global-download.acer.com/GDFiles/...&SC=EMEA_7

Thank you!

[SileNTViP]

Hi. I have some problem with my Acer Aspire One AO532h with matrix LP101WH1. I solve this problem with BIOS modification. I replace BIOS modules with EFI video driver and video BIOS from other netbook for my model i'll take it from Gigabyte T1000X but my video is Intel 3150. I try change BIOS to you from Gigabyte T1028X on Intel 950. Sorry for my bad english. And don't forget reinstall original video drivers if all OK

[kovaL3000]

Hello,

did anyone used this BIOS with 1366x768 screen? Does it work? Does the dimming of backlit works as it should? If yes - could you please post here your exact type of display panel?

Thanks in advane!

Best regards, Michal

[Maik007]

Hi SileNTViP,

AWESOME !!!!

I do not have time to play with it until now..
Yes, your modification works - the BIOS could be reached also on the laptop screen and i ca use normal GMA drivers and it works as usually - i can switch the external monitor and laptop display through the hot keys :-)

The display brightness is still only in two steps (min and max), but this is a big progress for me :-)


Thank you verymuch for that modification!!!