Notebook Radeon RS200 IGP Dual Head with MergedFB... Perfect!

[Alex Deucher]

On 1/25/07, Leoncio Juan Ernesto López (Cholo) <anicholo at gmail.com> wrote:
> Hi, I sent an email previously anticipating questions about this
> but... it's working flawlessly, so... I think I'll just document the
> experience briefly.
>
> I have an hp pavilion ze5200 notebook that comes with a
>
> Device "ATI Technologies, Inc. Radeon 330M/340M/350M (RS200 IGP)"
> (II) Primary Device is: PCI 01:05:0
> (--) Chipset ATI Radeon IGP330M/340M/350M (U2) 4337 found
>
> video card with VGA and S-Video output (and a flat panel).
>
> I had a problem where it didn't recognize the monitors correctly when
> both were connected (i.e. the panel and the CRT simultaneously). What
> I was seeing in the log file was:
>
> (II) RADEON(0): Primary:
>  Monitor   -- CRT
>  Connector -- VGA
>   DAC Type  -- Primary
>   TMDS Type -- NONE
>   DDC Type  -- VGA_DDC
> (II) RADEON(0): Secondary:
>  Monitor   -- NONE
>  Connector -- Proprietary
>   DAC Type  -- TVDAC/ExtDAC
>   TMDS Type -- NONE
>   DDC Type  -- NONE
> (II) RADEON(0): PLL parameters: rf=1432 rd=31 min=12000 max=35000; xclk=13300
> (WW) RADEON(0): Failed to detect secondary monitor, MergedFB/Clone mode disabled
>
> So there was no flat panel and I have no idea what that "proprietary"
> connector may be (S-Video output maybe?)
>
> The solution was trivial, and the only reason it wasn't working was
> because of a dyslexic error writing the Option line :D
>
> This makes it work:
>
> Option "MonitorLayout" "LVDS, CRT"
>
> (for some stupid reason I had completely omitted "MonitorLayout"
> without noticing so it wasn't working :-/)
>
> With that line (and MergedFB set to "true") the logs read:
>
> (II) RADEON(0): Primary:
>   Monitor   -- LVDS
>   Connector -- DVI-I
>   DAC Type  -- TVDAC/ExtDAC
>   TMDS Type -- NONE
>   DDC Type  -- NONE
> (II) RADEON(0): Secondary:
>  Monitor   -- CRT
>  Connector -- VGA
>   DAC Type  -- Primary
>   TMDS Type -- NONE
>   DDC Type  -- VGA_DDC
> (II) RADEON(0): PLL parameters: rf=1432 rd=31 min=12000 max=35000; xclk=13300
> (II) RADEON(0): MergedFB mode forced on.
>
> and everything works beautifully. :-)
>
> Now... why aren't the monitors detected correctly? is the hardware
> doing some nasty thing that confuses the driver?

Currently we use the bios connector tables which are not always
reliable and on newer bioses we don't have documentation on the
connector tables.

Alex