On May 23, 2005, at 9:17 am, Marko Kocic wrote:
I have Fujitsu Siemens Amilo A7600 laptop.
I have problem when booting in console mode. Only central part of my
monitor is used.
This means this that the resolution being displayed is less than that
your TFT. I've recently acquired an IBM Stinkpad & have experienced the
same thing.
If you were to display a 800 x 600 desktop (or console) on a CRT
display, then it stretches to fit the screen perfectly; because the CRT
is analogue and the dot-pitch is very fine indeed there is no
significant distortion from "stretching" the image. A TFT displays
optimally at a 1:1 pixel ratio - if you stretch an 800 x 600 image to
fit a 1024 x 768 display the image will be very poor, as it's not
possible to scale pixels cleanly to 120% of their original size on a
TFT. In this case a black pixel next to a white pixel might be scaled
to something like three pixels: one black, one white and a grey one in
the middle. This causes blurring & stuff, so many TFT monitors will
simply display the low-res output from the video card in the middle
part of the screen with a black border around it.
If you knew this already, then my apologies, but your statement could
have been better expressed:
"my video card's output resolution is much lower than that of my TFT
monitor"
I tried adding
append="vesafb:mmtr:ywrap,[EMAIL PROTECTED]" to lilo.conf, and also
played with different vga="xxx" settings but with no luck.
I'm using vanilla 2.6.12-rc4 kernel. My laptops TFT is [EMAIL PROTECTED]
I take it you're not using vesafb-tng in the kernel configuration
options? In GRUB that requires the framebufer to be defined as
"video=", like so:
kernel /bzImage-2.6.11-gentoo-r3 root=/dev/hda4
video=vesafb:ywrap,1024x768
The old vesa framebuffer is more mature, I think, and you might well
find that it works more smoothly for you out of the box. But I think
it'll also be depreciated in the future. I think that in any case you
will also need the option for "framebuffer console" compiled in.
On my system:
$ grep -ie vesa -ie framebuffer /usr/src/linux/.config
CONFIG_FB_VESA=y
# CONFIG_FB_VESA_STD is not set
CONFIG_FB_VESA_TNG=y
CONFIG_FB_VESA_DEFAULT_MODE="[EMAIL PROTECTED]"
CONFIG_FRAMEBUFFER_CONSOLE=y
Has anyone succeeded in getting whole screen available after booting
into console?
Yes, although it took me a couple of kernel recompiles & I haven't yet
got X working again. :/
On my system I needed to compile support for my video card in as a
module before it would do so.
$ grep -ie savage /usr/src/linux/.config
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 is not set
CONFIG_FB_SAVAGE=m
# CONFIG_FB_SAVAGE_I2C is not set
# CONFIG_FB_SAVAGE_ACCEL is not set
I found this advice in a forums thread by Googling for something like
"T20 thinkpad vesa-tng"
The important thing for you is to use `lspci` to check out what video
card you have in your laptop, then Google for that.
Btw, when I boot from livecd 2004.3, I get whole display available in
console. Also, when I start X I get the whole screen.
Good. This means that getting it all working right is achievable, and
that your hardware is supported. When you've booted to the liveCD, try
taking a look at `dmesg`. I use `dmesg | less`, then search for the
lines beginning with "vesafb" - along with a few lines before & after,
I found those quite informative.
You can find the kernel parameters used on the liveCD by running `dmesg
| grep command`, and I think you can also get the kernel config from
the liveCD, too, but I don't know how and anyway, you don't learn so
much that way. ;P
Stroller.
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