caocheng 发表于 2005-4-1 10:09:24

讯驰笔记本915GM驱动哪里有下啊？for linux的！

谢谢！还有我的宽屏显示器怎么办啊，不支持！FC3系统

blackdream 发表于 2005-4-1 12:38:43

记得内核>2.6.9是支持 i915 的……

linky_fan 发表于 2005-4-2 18:43:35

dell的6000?

915gm的集成显卡驱动xorg 6.8.2里就有

宽屏的机子公社里有安装指南的(不过是for 855Gm的)
http://www.linuxfans.org/nuke/modules.php?name=Forums&file=viewtopic&t=99298

caocheng 发表于 2005-4-4 10:37:33

BENQ的S52

caocheng 发表于 2005-4-11 11:32:23

还是不行啊！怎么办

linky_fan 发表于 2005-4-11 19:16:56


还是不行啊！怎么办

等等吧，看看最近有没有新的patch。gentoo那边已经有人搞定了dell的6000了，用的芯片组和s52是一样的。

caocheng 发表于 2005-4-12 10:36:27

gentoo在哪里啊，我要去看看！

linky_fan 发表于 2005-4-12 18:45:46

www.gentoo.org

caocheng 发表于 2005-4-13 09:13:57

昨天终于找到 915GM的驱动了,显示速度明显比vesa快很多!

现在就差能改VBIOS的宽屏程序了,那位写855resolution的老兄,什么时候出个支持915GM的程序了!就有福了!

linky_fan 发表于 2005-4-13 12:45:42


855resolution的老兄,什么时候出个支持915GM的程序了!就有福了!

diy一把?? :mrgreen:

兄弟们就有福了

caocheng 发表于 2005-4-14 09:27:11

那个程序,我看了半天,怎么改也不支持915GM的,水平太有限了!

/* 855resolution by Alain Poirier
*
* Currently only tested on a Dell 510m with BIOS A04
* *VERY* likely that this won't work yet on any
* other versions or chipsets!!!
*
* This code is based on the techniques used in :
*
*   - 855patch.Many thanks to Christian Zietz (czietz gmx net)
*   for demonstrating how to shadow the VBIOS into system RAM
*   and then modify it.
*
*   - 1280patch by Andrew Tipton (andrewtipton null li).
*
* This source code is into the public domain.
*/

/* VBIOS as found on the Dell 510m */

#include <stdio.h>
#include <sys/io.h>

#include "../plugin.h"

struct vbios_resolution {
    unsigned char unknow1;
    unsigned char x1;
    unsigned char unknow2;
    unsigned char x2;
    unsigned char y1;
    unsigned char unknow3;
    unsigned char y2;
} __attribute__((packed));

static void unlock_bios(void) {
    outl(0x8000005a, 0xcf8);
    outb(0x33, 0xcfe);
}

static void relock_bios(void) {
    outl(0x8000005a, 0xcf8);
    outb(0x11, 0xcfe);
}

static int detect_vbios_type(struct vbios_mode *modes) {
short int r1, r2;
float f;

    r1 = r2 = 32000;
    while(modes->mode != 0xff) {
      if(modes->resolution <= r1) {
            r1 = modes->resolution;
      } else {
            if(modes->resolution <= r2) {
                r2 = modes->resolution;
            }
      }

      modes++;
    }

    f = ((float) (r2-r1-6)) / sizeof(struct vbios_resolution);

    return f == (int) f;
}


static unsigned char *get_vbios_version(unsigned char *vbios_cfg) {
    return vbios_cfg+31;
}

static void get_resolution(struct vbios_resolution *resolution, unsigned int *x, unsigned int *y) {
    *x = ((((unsigned int) resolution->x2) & 0xf0) << 4) | resolution->x1;
    *y = ((((unsigned int) resolution->y2) & 0xf0) << 4) | resolution->y1;
}

static void set_resolution(struct vbios_resolution *resolution, unsigned int x, unsigned int y) {
    unlock_bios();

    resolution->x2 = (resolution->x2 & 0x0f) | ((x >> 4) & 0xf0);
    resolution->x1 = (x & 0xff);

    resolution->y2 = (resolution->y2 & 0x0f) | ((y >> 4) & 0xf0);
    resolution->y1 = (y & 0xff);

    relock_bios();
}

struct plugin plugin2 = {
    detect_vbios_type,
    get_vbios_version,
    (get_resolution_type) get_resolution,
    (set_resolution_type) set_resolution
};



这个程序,本身是for 855的,在915上,那个set_resolution()函数就执行后，没有任何效果！而get_resolution()能正常取得系统支持的解析率！

后来我又打开2.6.11内核的原码，driver/video/modedb.c 里面修改了显示模式，重新编译内核后，还是没有需要的1280＊768的模式！

版里有没有人能提供 /dev/mem文件的结构，以及内核原码哪一段是实现这个文件结构的！
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