Thinkpad T400 and frame buffer 1440x900

Hello!
I can't get the frame buffer working at the native resolution 1440x900 on my Thinkpad T400.
Have added the vga option at the kernel line in Grub.
kernel /vmlinuz26 root=/dev/sda6 ro devfs=nomount vga=0x355
Have tested with 354, 355 and 356. The screen just goes black.
Here is some info I used.
http://en.wikipedia.org/wiki/VESA_BIOS_Extensions
Orjanp

If you have an nvidia card, try vga=0x365. That's what I use on my Dell laptop with a Quadro NVS 135M driving a 1440x900 screen.
Failing that, use vga=ask and it will give you a list of all the modes the card you have supports.

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I tend to agree with the suggestion that it's waking from sleep and hibernating. It is at least a strong possibility.
Does it say "resuming windows"?
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The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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Problem with T400 and external monitor (1920x1200 resolution)

Hi there
My laptop:
ThinkPad T400 2767-C99* (graphics is: ATI Mobility Radeon HD 3470 256MB / X4500MHD (Switchable Graphics)), OS is WinXP
I just installed the newest video driver from the lenovo page (which also installs "ATI catalyst")
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Questions
Is that a hardware (maybe the graphic card does not support 1920x1200) or a software problem (maybe some problem with the driver) or just a matter of setting?
What can I do?
Help would be very much appreaciated!
*Original description: Based 2767-2JG: T9550(2.66GHz), 4GB RAM, 250GB 5400rpm HD, 14.1in 1440x900 LCD, 256MB ATI Radeon 3470HD, CDRW/DVDRW, Intel 802.11agn wireless, Bluetooth, Modem, 1GB Ether, UltraNav, Sec Chip, FPR, Camera, 9c Li-Ion, DOS License
Solved!
Go to Solution.

bfrey wrote:
Thank you for your answer.
I have already installed the newsest drivers from Lenovo. I don't really see why I should install a non-official driver. I am convinced that it must work somehow with the official driver.
Kind regards
there are plenty of instances where the official driver have glitches... just look around the forum to find instances of which.... while official drivers maybe better in most instances, there are always the odd case where it doesn't work as well as it should. If they perfectly out of box, then there would never need to be multiple revisions and updates.
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my good old venerable T22 has gone yesterday. When I see newest T400s I wonder where has gone famous Thinkpad T frame reliability. Where has gone all those frame "locks" on display which lock into the keyboard frame while display is closed and form sturdy enclosure. Now, at least T400*s* looks like ordinary XXX brand notebook with a visible space (from the side) between keyboad and display... and I'm really worried about its reliability. (so far I've just seen a lot of pictures, nothing more!)
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As I can see in BIOS there is a WiMAX adapter listed (it is ThinkPad T400 (2768-AD3)) and on Lenovo support page / drivers section for the exact same model lists: Intel WiMAX 6250 AGN and Intel Wireless WiMAX 5150, but upon installation of those, it says: ...no WiMAX adapter was detected on your computer. It is possible to proceed with installation, but nothing happens. So I'm a bit confused here, does it actually have WiMAX adapter or does it not have??
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Hi,
Does the BIOS actually say WiMAX? The Quick Path spec on your MTM is:
Base 2767-2KG: P8600(2.4GHz), 2GB RAM, 100GB 7200rpm HD, 14.1in 1440x900 , 256MB ATI Radeon HD3470, CDRW/DVDRW, Intel 802.11agn, Vodafone WWAN, Bluetooth, Modem, 1Gb Ether, UltraNav, Sec Chip, FPR, Camera, 9c Li-Ion, WinVista Bus 32
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The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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This is a wild guess based on a small amount of research, but
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Hi Mehran94,
Welcome to Lenovo Community!
As per the query we understood that you are facing issue with Display on your ThinkPad T400.
We have verified the image and the issue is related to LCD panel, but I suggest you to check with reseating the LCD cable on both the side which is connected to the LCD panel and also to the system board.
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Thinkpad T400 and frame buffer 1440x900

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