vga=791? (part 2)

zecodela · 10-25-2004, 10:27 PM

hi,
recently, i upgrade from kernel 2.4 to kernel 2.6. it is ok and no big problem. but, i cant make my console as 1024x786 as b4.
previously, i added vga=791 in grub as kernel parameter. however, the same parameter dont work in kernel 2.6. it complains that setting is not available!

i think this setting should work on diff. kernel version. what i can do now?

thanks,
jim

Shade · 10-26-2004, 01:01 AM

Did you compile your own kernel or did you grab a precompiled kernel?

Regarldess, the kernel you're running now doesn't have support for framebuffer, or frambuffer mode selection. The framebuffer is what gives your console the nice looking font, different sizes, color depth, etc. The linux kernel can be compiled with or without support for that, and yours probably does not have that enabled

--Shade

zecodela · 10-26-2004, 01:32 AM

yes, i think i did not check this option!
thanks! i will recompile again!

zecodela · 10-27-2004, 08:57 AM

this is the part 2 of my previous question.

i updated from kernel 2.4 to kernel 2.6. however, due to wrong framebuffer setting, my console cant run 1024x768 mode with kernel parameter vga=791.

i have recompiled the kernel with setting up several framebuffer related parameters. but, it still dont work! so, would anyone give me more detailed hints on what parameters i need to set to make it work?

here is the parameter used in my .config. pls give me some idea! thanks!

#*************************************************
#
# Graphics support
#
CONFIG_FB=y
CONFIG_FB_MODE_HELPERS=y
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
CONFIG_FB_VESA=y
# CONFIG_FB_VESA_STD is not set
CONFIG_FB_VESA_TNG=y
CONFIG_FB_VESA_DEFAULT_MODE="1024x768@60"
CONFIG_VIDEO_SELECT=y
# CONFIG_FB_HGA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I810 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON_OLD is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_VIRTUAL is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
# CONFIG_MDA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
#*************************************************

abisko00 · 10-27-2004, 09:02 AM

Try vga=0x316 instead

Code:

    | 640x480  800x600  1024x768 1280x1024
----+-------------------------------------
256 |  0x301    0x303    0x305    0x307   
32k |  0x310    0x313    0x316    0x319   
64k |  0x311    0x314    0x317    0x31A   
16M |  0x312    0x315    0x318    0x31B

zecodela · 10-27-2004, 09:36 AM

i have tried the parameters 0x317, 0x316, 0x305, 0x303... but, still not ok!
any more help?
thanks!

abisko00 · 10-27-2004, 10:00 AM

Maybe you need to specify the driver with video=vesafb

Do you have the following parameters set:

CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_INPUT=y