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kuye可以使一下
patch
原贴在：
http://forums.gentoo.org/viewtopic.php?t=71570&postdays=0&postorder=asc&start=0&sid=2f2c351a10d2784db5cdec56f40c1ea4
For quite some time I have seen people posting questions about getting higher-than-standard refresh rates on their vesafb consoles. The usual answer was: 'this is impossible'. While I was installing Gentoo during the last few days, I started to get really angry with my 1024x756@60Hz. It was at this time that I realized 'impossible' isn't exactly the right word here. I came up with a solution - a kernel patch that allows you to change the refresh rate of any VESA graphic mode.
Here is what you will need to get your console up and running at a high refresh rate:
a VBE 3.0 compliant graphic card (most modern cards seem to be VBE 3.0 compatible - my GeForce 2 MX 400 is, and other nVidia cards are too, AFAIK)
Linux Kernel v2.4.x source tree located at /usr/src/linux
some data about your monitor - its maximal vertical/horizontal refresh rate and its bandwidth (pixel clock)
a few minutes to setup everything
and of course the patch itself..
And here is what to do:
Download the patch.
Unpack it somewhere and make sure you have a look at the README file.
Code:
tar -zxvf patch-2.4.x-vesafb-rrc.tar.gz
Copy the actual patchfile to /usr/src/linux.
Code:
cp patch-2.4.x-vesafb-rrc.bz2 /usr/src/linux
Patch your kernel tree.
Code:
cd /usr/src/linux
bzip2 -dc patch-2.4.x-vesafb-rrc.bz2 | patch -p1
Run a script to set the CRTC data (this an equivalent of XFree86 Modelines).
Code:
chmod u+x /usr/src/linux/scripts/vesa_modeline_gen.pl
/usr/src/linux/scripts/vesa_modeline_gen.pl
Enter the data you are asked for (maximum vertical and horizontal refresh rate and monitor/graphic card max bandwidth). You should be able to find these values in your monitor and graphic card documentation or in the Internet [remember: Google is your best friend! ]. If you do everything properly, you will be informed that the generated data has been written to /usr/src/linux/arch/i386/boot/vesafb_modes.h
Recompile your kernel now. If you have everything else configured, you will only need to make bzImage. When the recompilation is finished, move the kernel image to your /boot partition.
Code:
make bzImage
mount /boot
mv /boot/bzImage /boot/bzImage.old
cp /usr/src/linux/arch/i386/boot/bzImage /boot
Find a new mode number. You can use the following table:
Code:
| 320x200 640x480 800x600 1024x768 1280x1024
----+-----------------------------------------------
256 | N/A 0x501 0x503 0x505 0x507
32k | 0x50D 0x510 0x513 0x516 0x519
64k | 0x50E 0x511 0x514 0x517 0x51A
16M | 0x50F 0x512 0x515 0x518 0x51B
Modify your /boot/grub/grub.conf by putting your chosen mode number as the vga= kernel parameter. Here is an example:
Code:
title=Gentoo Linux 1.4
root=(hd0,0)
kernel=(hd0,0)/boot/bzImage root=/dev/hda3 vga=0x518
Note: You can still use all these modes with their standard refresh rates - just change the leading '5' to '3' in the mode number.
Unmount /boot, reboot and enjoy your framebuffer console at a high refresh rate. Mine is running perfectly in 1024x756 @ 85Hz
Note that so far I haven't had the opportunity to test it on boxes other than my own. Your feedback will be welcomed. Have fun! |
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IP卡
狗仔卡
发表于 2003-11-4 13:07:11
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡
发表于 2003-11-4 15:07:30
