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解决Ubuntu 10.04开机和关机分辨率过低

| 2011-04-09 21:51   收藏: 2    

  1.可以解决的问题:

  (1)安装驱动后开机和关机画面花屏,分辨率低;

  (2)开机画面直接出现,一闪而过,错过点点进度过程。(这个我原来幼稚地认为是10.04的开机速度太快,进度条来不及显示呢。)

  2.解决 方案:uvesafb 替代 vesafb

  3.所需包:

  (1)v86d(uvesafb需要)

  (2)hwinfo(查看framebuffer)

  4.步骤

  (1)安装驱动:

  系统-->系统管理-->硬件驱动,我选的是那个推荐的显卡驱动。

  (2)安装所需包:

    应用程序-->附件-->终端

  sudo apt-get install v86d hwinfo

  (3)查看framebuffer

  sudo hwinfo --framebuffer

  我的显示器分辨率是1280x800的所以我需要的是:1280x800-24

  (4)修改grub文件

  sudo gedit /etc/default/grub

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

  # If you change this file, run 'update-grub' afterwards to update

  # /boot/grub/grub.cfg.

  GRUB_DEFAULT=0

  GRUB_HIDDEN_TIMEOUT=0

  GRUB_HIDDEN_TIMEOUT_QUIET=true

  GRUB_TIMEOUT=10

  GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`

  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset video=uvesafb:mode_option=1280x800-24,mtrr=3,scroll=ywrap"

  GRUB_CMDLINE_LINUX=""

  # Uncomment to disable graphical terminal (grub-pc only)

  #GRUB_TERMINAL=console

  # The resolution used on graphical terminal

  # note that you can use only modes which your graphic card supports via VBE

  # you can see them in real GRUB with the command `vbeinfo'

  #GRUB_GFXMODE=1280x800

  # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux

  #GRUB_DISABLE_LINUX_UUID=true

  # Uncomment to disable generation of recovery mode menu entries

  #GRUB_DISABLE_LINUX_RECOVERY="true"

  # Uncomment to get a beep at grub start

  #GRUB_INIT_TUNE="480 440 1"

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

  (5)修改initramfs:

  sudo gedit /etc/initramfs-tools/modules

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

  # List of modules that you want to include in your initramfs.

  #

  # Syntax: module_name [args ...]

  #

  # You must run update-initramfs(8) to effect this change.

  #

  # Examples:

  #

  # raid1

  # sd_mod

  uvesafb mode_option=1280x800-24 mtrr=3 scroll=ywrap

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

  (6)强制使用Framebuffer:

  echo FRAMEBUFFER=y | sudo tee /etc/initramfs-tools/conf.d/splash

  (7)更新grub和initramfs:

  sudo update-grub2

    sudo update-initramfs -u

  (8)重启。

 

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