Re: radeonfb patch for 2.4.22...

[Peter Osterlund <petero2@telia.com>]

Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:

> > >
> > > Which is what the original 0.1.8 patch included, his fixes were included.
> > 
> > Ah really? I though that his changes were not merged in your 0.1.8 patch.
> > 
> > So can I just revert his patch and accept your instead that all of his
> > stuff is in ? Whoaa, great.
> 
> No. 0.1.8 lacks a lot of my stuffs

I have a small problem with radeonfb in 2.4.22-pre5 (+manually created
radeonfb.h file). During boot, when the console is switched over to
the frame buffer device, the screen becomes corrupted. Mostly by white
squares in a grid pattern and some squares with other colors. Between
the squares, normal characters can be seen, but each character is
duplicated. Here is a picture: (not very sharp unfortunately)

        http://w1.894.telia.com/~u89404340/radeonfb.jpg 

Text added after the switch is not corrupted, so eventually the
corruption is scrolled off the screen and after that the framebuffer
appears to be working correctly.

2.4.22-pre3 does not have this problem. I haven't found a patch for
the vanilla 0.1.8 version, so I don't know if that version also has
this problem. I think someone has reported a similar problem in 2.5.x,
but I don't remember the details.

Here are some messages from the kernel log:

Jul 14 23:08:44 best kernel: radeonfb: ref_clk=2700, ref_div=12, xclk=18300 from BIOS
Jul 14 23:08:44 best kernel: radeonfb: panel ID string: Samsung LTN150P1-L02    
Jul 14 23:08:44 best kernel: radeonfb: detected LCD panel size from BIOS: 1400x1050
Jul 14 23:08:44 best kernel: Console: switching to colour frame buffer device 175x65
Jul 14 23:08:44 best kernel: radeonfb: ATI Radeon M7 LW DDR SGRAM 64 MB
Jul 14 23:08:44 best kernel: radeonfb: DVI port LCD monitor connected
Jul 14 23:08:44 best kernel: radeonfb: CRT port no monitor connected

-- 
Peter Osterlund - petero2@telia.com
http://w1.894.telia.com/~u89404340