[SOLVED] console:switching to colour frame buffer device 128x48 while kernel boot 2.6.33-smp

adamk75 · 05-27-2010, 08:23 AM

Theoretically when KMS kicks in the vga/vesa console will hand control over to inteldrmfb, so you probably don't need vga=normal, but it can't hurt anything.

But your fbset output basically shows that it's working as expected. If you want a different resolution on the console (such as 800x600 or 640x480) just specify that with video= instead of 1024x768.

Adam

matters · 05-27-2010, 08:55 AM

Quote:

Originally Posted by adamk75

Theoretically when KMS kicks in the vga/vesa console will hand control over to inteldrmfb, so you probably don't need vga=normal, but it can't hurt anything.

But your fbset output basically shows that it's working as expected. If you want a different resolution on the console (such as 800x600 or 640x480) just specify that with video= instead of 1024x768.

Adam

It worked and really vga=normal its not necessary, when i changed to 640x480 it gave big change, in opposite to 800x600.

can you tell me also where i can look for full list of switches for kernel options for append ?

adamk75 · 05-27-2010, 09:01 AM

You'd have to check the documentation that comes with the kernel. There are probably thousands of options for the various kernel subsystems and drivers. The framebuffer documentation, unfortunately, is pretty out-of-date, actually. The only reason I know these options is from hanging on in various related channels on IRC.

Adam

Didier Spaier · 05-27-2010, 09:04 AM

See /usr/src/linux/Documentation/kernel-parameters.txt, provided a kernel-source package be installed, of course.

Be aware though that as stated in it "This document may not be entirely up to date and comprehensive".

You can "grep -r __setup /usr/src/linux/*" to find more parameters but it will take _some_time_ to complete

matters · 05-27-2010, 09:15 AM

thanks to all.

adam: what are those channels if you dont mind sharing?

adamk75 · 05-27-2010, 09:45 AM

#radeon, #dri-devel

There's an intel specific one that I don't spend much time in, though, called #intel-gfx

All three are on freenode.

Adam

allend · 05-27-2010, 10:15 AM

Quote:

one quick question what is relation between append = "video=1024x768" and vga=normal?
does both have to be enabled in lilo.conf?
im asking just to clarify

I have just been playing with this.
The 'vga=normal/ext/ask/n' is used by the kernel until the inteldrmfb is setup. Have a look at 'dmesg | less'.
The 'append = "intelfb:video=1024x768"' is used by the kernel to configure the framebuffer.

Apart from /usr/src/linux/Documentation/kernel-parameters.txt you can also take a look at /usr/src/linux/Documentation/fb/intelfb.txt

adamk75 · 05-27-2010, 10:24 AM

The intelfb.txt document is largely not applicable to this situation since the OP isn't using intelfb. He's using inteldrmfb, a completely separate beast.

Adam

allend · 05-27-2010, 10:27 AM

It does give detail about the options though.

matters · 05-27-2010, 11:05 AM

hey allend both you and adam were right and its pleasure to learn from you

i hope you upgraded intel driver since i had problems up untill several days ago

thank you all