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SubjectLinux-2.4.20: bug with radeonfb
Environment:	gcc-2.95.4, latest dev tools from Debian "Sarge"( testing )
Kernel: 2.4.20 + patch-2.4.20-ac1 from ftp.kernel.org
Machine: i386 (intel P4-M/1700 ) / 512MB DDR266, chipset i845MP
Graphics subsystem: ATI Radeon M7, 64MB DDR
Samsung LTN-1050 flatpanel, 1400x1050 physical resolution (DVI connection)


First of all, i must congratulate all kernel developers for this wonderful
work-of-art which Linux is and will continue to be :) Thanks for making
this world a little better!

On to the point:

"Go's":
i845MP chipset supported ( didn't previously work ). ICH3 & co. detected
and used. Some minor details left, though :)
UDMA100 enabled and working

"No Go's":
Radeon M7 AGP:
- Framebuffer: unreadable output ( did work _perfectly_ with Linux-2.4.19 ).
Looks like there's a bug somewhere in the rendering code( kernel
autodetects and configures a 175x65 framebuffer, as previously):
output seems to be "misplaced" -- might be a little assumption when
calculating line offsets.
Text lines, although bent to the right( 60º angle or so ), look _extremely
long_ (might be a wrong appreciation)
"Tux" logo is unrecogniceable too :(

- DRM 4.1( v20020828 ) works nicely with XFree 4.2.1
- Xvid extension works

dmesg gives this ( double-checked with 2.4.19 ): relevant sections are
identical to 2.4.19
---
Pentium 4 Mobility - stepping 04
[...]
ref_clk=2700, ref_div=12, xclk=16600 from BIOS
Samsung LTN-1050P1-L02 flatpanel
DFP 1400x1050 from BIOS
Radeon M7 LW DDR SGRAM 64MB
colour framebuffer 175x65
---
Feel free to ask for whatever config detail i might have forgotten to add.
I'm not sure if i will have time enough to contribute (part of) a patch --
gotta leave some time for lunch and sleep ;) Wouldn't mind to help, however.


Please CC any relevant messages to me. Sorry for not subscribing, but i
already receive 300+ e-mails daily :-|
TIA
Regards,
J.L.

--
All my other computers run Linux.
This is an split-personality machine ;)

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