Re: console framebuffer
On Mon, 2003-08-11 at 06:39, Brian P. Flaherty wrote:
> Hello,
>
> When I installed the 2.4.21 kernel-image, I gave the radeonfb a try.
> I have an IBM X31 with a Radeon Mobility M6 LY (according to lspci),
> and I really liked the console with the framebuffer. (I liked it so
> much that I started to learn screen.)
>
> However, I was also quite interested in getting cpufreq to work, so
> yesterday I pulled the source for kernel 2.6-test2 from the unstable
> archive and I have been building kernels since. cpufreq appears to be
> working now (with apm), but I have lost my nice framebuffer. When the
> machine starts, it loads the framebuffer and spits out some
> information (from dmesg):
>
> > radeonfb_pci_register BEGIN
> > PCI: Found IRQ 11 for device 0000:01:00.0
> > PCI: Sharing IRQ 11 with 0000:00:1d.0
> > PCI: Sharing IRQ 11 with 0000:02:00.0
> > PCI: Sharing IRQ 11 with 0000:02:01.0
> > radeonfb: ref_clk=2700, ref_div=60, xclk=14400 from BIOS
> > radeonfb: probed DDR SGRAM 16384k videoram
> > radeon_get_moninfo: bios 4 scratch = 1000044
> > radeonfb: panel ID string: 1024x768
> > radeonfb: detected DFP panel size from BIOS: 1024x768
> > radeonfb: ATI Radeon M6 LY DDR SGRAM 16 MB
> > radeonfb: DVI port LCD monitor connected
> > radeonfb: CRT port no monitor connected
> > radeonfb_pci_register END
>
> Also, lsmod shows it. But I don't think anything really happens to
> the screen. It seems the framebuffer module is loaded, but it isn't
> doing anything. I have grepped around for fbset under /etc and
> /lib/modules hoping to find where that is happening when the 2.4.21
> kernel loads, but I cannot find anything. I have looked at the output
> of fbset under both kernels and they look similar, only rgba and the
> LineLength are different.
>
> lpa:~# diff k2.4.fbseti k2.6.fbseti
> 6c6
> < rgba 8/0,8/0,8/0,0/0
> ---
> > rgba 6/0,6/0,6/0,0/0
> 10c10
> < Name : Radeon M6 LY
> ---
> > Name : M6 LY
> 18c18
> < LineLength : 1024
> ---
> > LineLength : 0
>
> There are no video append statements in lilo.conf. Can anyone tell me
> where to look in order to understand how the framebuffer is started in
> the 2.4.21 kernel, so I can try to replicate it in my 2.6? Thanks a
> lot.
>
> Brian
>
I am not sure if its needed but do you have
CONFIG_VIDEO_SELECT=y
In .config?
Do you have a vga=... line in lilo? for me the line vga=792 worked, but
I am using vesa frame buffer and its a vesa mode so I am not sure if it
will work for you.
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