On Wednesday 9 January 2008, [EMAIL PROTECTED] wrote:
> For a good while now I've had a setting like this in grub.conf:
>
> (wrapped for mail)
> kernel /kernel-2.6.23-r5 root=/dev/hda5 \
> vga=0x31A video=vesafb:mtrr,ywrap
>
> I'm not sure any more how much of that is necessary.
FWIW, I have only the vga= part (more exactly, I have vga=791, with the
argument in decimal. Yours would be vga=794, but the base is just a
matter of habit).
> I have it there to allow console mode to have much larger resolution
> than default (The appearance is much smaller text)
>
> I think this setting in kernel config is the one needed for that:
> CONFIG_FB_VESA=y
Correct.
>
> But I'm trying to build a pared down kernel a console only setup.
> Going thru the kernel settings in menuconfig... I'm not finding the
> one that creates that `CONFIG_FB_VESA=y' element.
During make menuconfig, hit / and enter the text you want to search for
(in this case, obviously, it's FB_VESA), and hit enter. It should show
you where that particular option is found in the configration. In my
case (vanilla 2.6.23.9), it shows
Symbol: FB_VESA [=y]
Prompt: VESA VGA graphics support
Defined at drivers/video/Kconfig:595
Depends on: HAS_IOMEM && FB=y && X86
Location:
-> Device Drivers
-> Graphics support
-> Support for frame buffer devices (FB [=y])
Selects: FB_CFB_FILLRECT && FB_CFB_COPYAREA && FB_CFB_IMAGEBLIT &&
VIDEO_SELECT
Notice the "Location:" bit.
> I've gone back and forth through the setting under:
> Device drivers/Graphics-support .. checking Support for FrameBuffer
> devices (both as module and builtin in different saves).
It should be there. Which kernel sources and release are you using?
Also note, in the above output, that VESA_FB depends on HAS_IOMEM and FB.
If you don't select either, the VESA_FB option will not be shown.
Since you obviously have FB set (otherwise you would not see the
Userspace VESA option), you can check the status of HAS_IOMEM. With the
same / trick described above, search for HAS_IOMEM. It does not give you
a lot of information this time, but at least it should tell you whether
the option is enabled. In my case, it just says
Symbol: HAS_IOMEM [=y]
In case you don't have it active (very strange, since it should be part
of the default configuration and not modifiable), try a "make mrproper"
and start over with make menuconfig, which should start with the default
config this time.
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