Re: Linux-2.4.20: bug with radeonfb

Adrian Bunk (bunk@fs.tum.de)
Sun, 15 Dec 2002 01:56:55 +0100


On Tue, Dec 03, 2002 at 01:52:09AM +0100, José Luis Tallón wrote:

> 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
>...
> "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
>...

Does it work if you revert the patch against drivers/video/radeonfb.c
that is in -ac?

Does it work in plain 2.4.20 (without the -ac patch)?

> TIA
> Regards,
> J.L.

cu
Adrian

-- 

"Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed

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