help on frame buffer

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help on frame buffer

help on frame buffer

2005-06-01 - By Raja.Saleru@(protected)

Back

Reply: 1 2 3 4 5

Hi,

I am using redhat linux 9, I want to enable frame buffer support.
I followed the following steps..

1. Make sure that you have the Linux kernel source code in /usr/src/linux/
.
2. Log in as root and cd /usr/src/linux
3. Configure the kernel:
Run:
make menuconfig

Select "Code maturity level options" and set "Prompt for development
and/or incomplete code/drivers".
Then select "Console drivers" set "Support for frame buffer devices" to
built-in (even if it says EXPERIMENTAL). Then configure the driver. Most
modern graphics cards can use the "VESA VGA graphics console"; use that or
a driver that specifically matches your video card. Finally enable
"Advanced low level driver options" and make sure that 16 and 32 bpp
packed pixel support are enabled.
When you are finished, chose exit and save.
4. Compile the kernel
First do:
make dep

then:
make bzImage

The new kernel should now be in arch/i386/boot/bzImage
5. Copy the kernel to the boot directory:
cp arch/i386/boot/bzImage /boot/linux.vesafb

6. Edit /etc/lilo.conf
IMPORTANT: Keep a backup of /etc/lilo.conf, and have a rescue disk
available. If you make a mistake at this stage, the machine may not boot.
The file /etc/lilo.conf specifies how the system boots. The precise
contents of the file varies from system to system, this is one example:
boot = /dev/hda3
delay = 30
image = /boot/vmlinuz
root = /dev/hda3
label = Linux
read-only # Non-UMSDOS filesystems should be mounted read-only for
checking
other=/dev/hda1
label=nt
table=/dev/hda

IMPORTANT: Keep a backup of /etc/lilo.conf, and have a rescue disk
available. If you make a mistake here, the machine may not boot.
Make a new "image" section that is a copy of the first one, but with image
= /boot/linux.vesafb and label = Linux-vesafb. Place it just above the
first image section.
Add a line before the image section saying 'vga = 791'. (Meaning 1024x768,
16 bpp.)
With the above example, lilo.conf would now be:
boot = /dev/hda3
delay = 30
vga = 791
image = /boot/linux.vesafb
root = /dev/hda3
label = Linux-vesafb
read-only # Non-UMSDOS filesystems should be mounted read-only for
checking
image = /boot/vmlinuz
root = /dev/hda3
label = Linux
read-only # Non-UMSDOS filesystems should be mounted read-only for
checking
other=/dev/hda1
label=nt
table=/dev/hda

Do not change any lines in the file; just add new ones.
7. Run lilo
To make the new changes take effect, run the lilo program:
lilo

8. Reboot the system

-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----

after rebooting, the kernel is not booting...
it says kernel version mismatch and kernel panic, mention the correct
root.

can anybody help in this ?

Raja Saleru
LARSEN & TOUBRO INFOTECH LIMITED
Communications & Embedded Systems
No.4, Service Road,
Domlur Layout,
Bangalore - 560 071
INDIA
Tel : +91-80-25350510/512 Extn : 106
Mobile : +91-
Fax : +91-80-25350495

__ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ __

 Hi,
 
 I am using redhat linux 9,  I want to
enable frame buffer support.
 I followed the following steps..
 
 
 1.        Make sure that you have the Linux kernel source
code in <a href=file:///usr/src/linux/>/usr/src/linux/</a>. 
 2.        Log in as root and cd /usr/src/linux 
 3.        Configure the kernel: 
Run: 
         make menuconfig
 

Select "Code maturity level options
" and set "Prompt for development and/or incomplete code/drivers"
. 
Then select "Console drivers"
set "Support for frame buffer devices" to built-in (even if it says
EXPERIMENTAL). Then configure the driver. Most modern graphics cards can use
the "VESA VGA graphics console"; use that or a driver that
specifically matches your video card. Finally enable "Advanced low level
driver options" and make sure that 16 and 32 bpp packed pixel support are
enabled. 
When you are finished, chose exit and
save. 
 4.        Compile the kernel 
First do: 
         make dep 

then: 
         make bzImage 

The new kernel should now be in 
arch/i386/boot/bzImage 
 5.        Copy the kernel to the boot directory: 
         cp arch/i386
/boot/bzImage /boot/linux.vesafb 

 6.        Edit /etc
/lilo.conf 
IMPORTANT: Keep a backup of /etc/lilo
.conf, and have a rescue disk available. If you make a mistake at this stage,
the machine may not boot. 
The file /etc/lilo.conf specifies how
the system boots. The precise contents of the file varies from system to system
, this is one example: 
 boot = /dev/hda3 
delay = 30 
image = /boot/vmlinuz 
 root = /dev/hda3 
 label = Linux 
 read-only # Non-UMSDOS filesystems should be mounted read-only for
checking 
other=/dev/hda1 
       label=nt 
       table=/dev/hda 

IMPORTANT: Keep a backup of /etc/lilo
.conf, and have a rescue disk available. If you make a mistake here, the machine
may not boot. 
Make a new "image" section
that is a copy of the first one, but with image = /boot/linux.vesafb and label
= Linux-vesafb. Place it just above the first image section. 
Add a line before the image section
saying 'vga = 791'. (Meaning 1024x768, 16 bpp.) 
With the above example, lilo.conf would
now be: 
 boot = /dev/hda3 
delay = 30 
vga = 791 
image = /boot/linux.vesafb 
 root = /dev/hda3 
 label = Linux-vesafb 
 read-only # Non-UMSDOS filesystems should be mounted read-only for
checking 
image = /boot/vmlinuz 
 root = /dev/hda3 
 label = Linux 
 read-only # Non-UMSDOS filesystems should be mounted read-only for
checking 
other=/dev/hda1 
       label=nt 
       table=/dev/hda 

Do not change any lines in the file;
just add new ones. 
 7.        Run lilo 
To make the new changes take effect, run
the lilo program: 
         lilo 

 8.        Reboot the system 
 
 -- ---- ---- ---- ---- ---- ---- ---- ------
-- ---- ---- -----
 
 after rebooting, the kernel is not booting..
.
 it says kernel version mismatch and kernel
panic, mention the correct root.
 
 can anybody help in this ?
 
 
 Raja Saleru 
LARSEN & TOUBRO INFOTECH LIMITED 
Communications & Embedded Systems 
No.4, Service Road, 
Domlur Layout, 
Bangalore - 560 071 
INDIA 
Tel : +91-80-25350510/512 Extn : 106 
Mobile : +91- 
Fax : +91-80-25350495 


 
__ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ __ 

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