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Black console screen issue

in debian lenny default console resolution is very low, so to change it to the one i want i edited /boot/grub/menu.lst file, added vga=ask. and it looks like this

Code:

kernel /boot/vmlinuz-2.6.26-2-686 root=/dev/sda1 ro quiet vga=ask

so before linux boot i can choose the resolution. i choose 1024x768 8bit, which code is 305. at this time everything seems ok. so when the os is loaded i change vga=ask to vga=305 and after next restart i have black screen when linux is loading in console. it disapears only when X starts. anyone has an idea why is so?

Try using 773 instead of 305.

Quote:

Originally Posted by {BBI}Nexus{BBI} (Post 3935680)

Try using 773 instead of 305.

but is it ok to use code which isn't in the list?

Quote:

Originally Posted by Asido (Post 3935962)

but is it ok to use code which isn't in the list?

Which list are you referring to? This is the list I use.

Code:

  +-------------------------------------------------+

          | 640x480    800x600    1024x768  1280x1024

      ----+--------------------------------------------

      256 | 0x301=769  0x303=771  0x305=773  0x307=775

      32K | 0x310=784  0x313=787  0x316=790  0x319=793

      64K | 0x311=785  0x314=788  0x317=791  0x31A=794

      16M | 0x312=786  0x315=789  0x318=792  0x31B=795

    +-------------------------------------------------+

Quote:

If you want 1280×1024 at 16M colours, you’d use vga=795… or for 800×600 at 64k colours, you’d use vga=788 and so on.

Source: http://droptips.com/framebuffer-reso...-linux-console

i am talking about the list, which appears when adding vga=ask. i read that some people had problems with their video card after typing other codes, so just want to make sure.