Re: Help-On frame Buffer

[sanjay anvekar <sanjayanvekar@yahoo.com>]

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Hi Bruno,
    Thanks for your reply. I have recompiled the Linux kernel with 
CONFIG_DRM_I915
enabled, with the updated kernel file my display is looking strange. i.e. I have 
vga=791
option in my boot configuration file and with this actual graphics screen is 
displayed only
in quarter area of screen. Which is reapting twice, covering left and right 
quarter of screen,
rest screen is black(i.e.bottom half of the screen). 
How can I solve this problem? Please help me. 
With the latest Kernel file with CONFIG_DRM_I915 enabled, how do I set different 
screen resolutions. Please let me know.

Thanks & Best Regards,
Sanjay




________________________________
From: Bruno Prémont <bonbons@linux-vserver.org>
To: sanjay anvekar <sanjayanvekar@yahoo.com>
Cc: intel-gfx@lists.freedesktop.org
Sent: Sat, 4 December, 2010 2:12:57 AM
Subject: Re: [Intel-gfx] Help-On frame Buffer

Hi,

You should look at KMS (Kernel Mode Setting) with i915 driver that you
find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
KMS can also be manually enabled/disabled with i915.modeset kernel
parameter when i915 is built-in.

VESA only knows a few standard predefined modes but not the wide
resolutions currently seen. It's based on some BIOS code and can only
set resolution at early system boot, does not support s2ram (S3) nor any
acceleration.

Bruno



On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> Hi,
> 
>     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M chipset 
>
> Panel PC with integrated Intel 945GSE
> display chipset. Different size and resolution LCD screens are interfaced to 
>the 
>
> hardware (it supports Dual Channel 24-bit LVDS).
> I am using Linux VESA frame buffer for various graphic object implementation.I 

> am able to get 1024x768 screen resolution using
> VESA frame buffer, but I am not able to get the full screen resolution of 
> 1366x768 pixels supported my LCD screen.
> Currenlty for various resolution I am changing boot configuration file as 
below
>     e.g. vga=791 for 1024x768.
> 
> My existing BIOS does not list the 1366x768 resolution. So I would like to know 
>
> how I could get the full resolution using
> the exsiting  hardware.
> Please help me.
> 
> Thanks & Best Regards,
> Sanjay
> 
> 



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