Forum RSS Feed Follow @ Twitter Follow On Facebook

Thread Rating:
  • 3 Vote(s) - 3.67 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[-]
Welcome
You have to register before you can post on our site.

Username:


Password:





[-]
Latest Threads
ASUS M2N4-SLI new cpu
Last Post: cocossss
Yesterday 03:21 PM
» Replies: 8
» Views: 2061
[REQUEST] Gigabyte Aorus 15G KC BIOS unl...
Last Post: Dudu2002
10-14-2025 05:10 PM
» Replies: 35
» Views: 15749
Aorus 17G YD unlock bios?
Last Post: Dudu2002
10-14-2025 05:08 PM
» Replies: 1
» Views: 226
Unlocking the Hidden MAINTENANCE Menu of...
Last Post: 123BIOS
10-14-2025 10:31 AM
» Replies: 0
» Views: 374
[REQUEST] Lenovo Z50-70 & Z40-70 (9BCNxx...
Last Post: pitnixu
10-14-2025 04:12 AM
» Replies: 757
» Views: 365563
[REQUEST] Lenovo IdeaPad S400 (6DCNxxWW)...
Last Post: Jamil Missen
10-13-2025 10:04 PM
» Replies: 335
» Views: 166713
[REQUEST] Acer Aspire 5742(G,Z) BIOS Unl...
Last Post: deliter
10-13-2025 09:32 PM
» Replies: 168
» Views: 69764
[REQUEST]wwan whitelist removal ThinkPad...
Last Post: SkyShadow
10-13-2025 02:45 PM
» Replies: 0
» Views: 281
[REQUEST] Lenovo T440(S) (GJETxxWW) Whit...
Last Post: Dudu2002
10-13-2025 07:31 AM
» Replies: 499
» Views: 260647
HP Victus 16 Bios Splash Screen
Last Post: Onyxcho_Lune
10-13-2025 07:26 AM
» Replies: 0
» Views: 321
[REQUEST] Lenovo IdeaPad Gaming 3-15IHU6...
Last Post: Bobby123Patel
10-13-2025 06:38 AM
» Replies: 7
» Views: 4190
[REQUEST] HP Omen 16 InsydeH2O F.18 (08C...
Last Post: Wernexnrs
10-13-2025 04:16 AM
» Replies: 0
» Views: 368
[REQUEST] 775i65g Wolfdale
Last Post: DeathBringer
10-13-2025 01:53 AM
» Replies: 53
» Views: 33878
Dell XPS M1710 Overclock Tab Unlock Mod ...
Last Post: Skeleton
10-12-2025 08:55 PM
» Replies: 0
» Views: 245
[Request] AM3 support for ECS RS485M-M
Last Post: DeathBringer
10-12-2025 07:47 AM
» Replies: 3
» Views: 533
Optiplex 5055 RyzenBIOS Faulty (not upgr...
Last Post: LaszloE
10-12-2025 05:29 AM
» Replies: 2
» Views: 196
Intel Xeon E3 1270 V5 for LGA 1151 (ASUS...
Last Post: abruchez
10-12-2025 03:26 AM
» Replies: 4
» Views: 408
[REQUEST] Lenovo Thinkpad T420 (83ETxxWW...
Last Post: pycckuu4ejl
10-11-2025 07:32 PM
» Replies: 316
» Views: 285399
M3N78 PRO Phenom II x4 955 BE update
Last Post: Vlad94
10-11-2025 01:28 PM
» Replies: 3
» Views: 5877
Acer Aspire E1 572 black screen, needs b...
Last Post: just_biosmods
10-11-2025 10:38 AM
» Replies: 31
» Views: 38395

[unlock request] Video Bios on Acer Aspire One D250 BIOS v1.29
#1
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
[Image: 2yq.png]

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!
find
quote
#2
i have made a small success - i compile a new IEGD driver for WinXP, so the panel is now working Big Grin

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.
find
quote
#3
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
find
quote
#4
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. Shy


find
quote
#5
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.
find
quote
#6
Please provide a link to the BIOS download, you can find this on the manufacturers website.

Thanks.

find
quote
#7
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!
find
quote
#8
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


Attached Files
.zip   Acer AOD250 1.29 (mod 1366).zip (Size: 738.15 KB / Downloads: 235)
find
quote
#9
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
find
quote
#10
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!!!Rolleyes
find
quote


Forum Jump:


Users browsing this thread: 2 Guest(s)