Need help to get VGA-to-TV working with Radeon 9250

[Sebastian]

On Do, Jan 26, 2006 at 12:01:02 -0500, Alex Deucher wrote:
> 
> I think your monitorlayout lines are causing part of the problem.  It
> doesn't quite work like you may think it should.  the driver makes
> some hard coded assumptions about how crtcs  get routed to outputs. 
> if you are going to have stuff plugged into both ports, the driver
> won't work that way you want it to. you would need to either connect
> the tv-out cable to the DVI port via an adapter or unplug the DVI port
> when using the vga port. that will force the primary crtc (display
> controller) to output an analog signal to whichever port has something
> attached. if you are only using one output, you need to use "CRT,
> NONE" for your monitorlayout.
> 
> Alex
> 
> 

Hi Alex,

I tried what you suggested and compared the logs. I disconnected the
DVI-adapter and started two runs, one with MonitorLayout "NONE,CRT",
the other with "CRT,NONE". Here's what diff -Nur (yeah, I know ;))
came up with:

diff -Nur log.none.crt.log log.crt.none.log
--- log.none.crt.log    2006-01-27 05:56:58.000000000 +0100
+++ log.crt.none.log    2006-01-27 05:57:10.000000000 +0100
@@ -11,7 +11,7 @@
 Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
-(==) Log file: "/var/log/Xorg.1.log", Time: Fri Jan 27 05:53:39 2006
+(==) Log file: "/var/log/Xorg.1.log", Time: Fri Jan 27 05:55:15 2006
 (==) Using config file: "/etc/X11/xorg.conf"
 (**) Option "defaultserverlayout" "Default layout"
 (++) ServerLayout "TV layout"
@@ -422,7 +422,7 @@
 (**) RADEON(0): Depth 24, (--) framebuffer bpp 32
 (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp
pixmaps)
 (==) RADEON(0): Default visual is TrueColor
-(**) RADEON(0): Option "MonitorLayout" "NONE, CRT"
+(**) RADEON(0): Option "MonitorLayout" "CRT,NONE"
 (**) RADEON(0): Option "MergedFB" "false"
 (**) RADEON(0): Option "ForceMinDotClock" "14MHz"
 (**) RADEON(0): Option "ColorTiling" "false"
@@ -465,7 +465,7 @@
 (II) RADEON(0): Connector0: DDCType-2, DACType-1, TMDSType-0,
ConnectorType-3
 (II) RADEON(0): Connector1: DDCType-3, DACType-0, TMDSType--1,
ConnectorType-2
 (**) RADEON(0): MonitorLayout Option:
-       Monitor1--Type NONE, Monitor2--Type CRT
+       Monitor1--Type CRT, Monitor2--Type NONE

 (II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
 (II) RADEON(0): I2C device "DDC:ddc2" removed.
@@ -473,20 +473,20 @@
 (II) RADEON(0): I2C device "DDC:ddc2" removed.
 (II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
 (II) RADEON(0): I2C device "DDC:ddc2" removed.
-(II) RADEON(0): DDC Type: 3, Detected Type: 0
+(II) RADEON(0): DDC Type: 2, Detected Type: 0
 (II) RADEON(0):
 (II) RADEON(0): Primary:
  Monitor   -- CRT
+ Connector -- DVI-I
+ DAC Type  -- TVDAC/ExtDAC
+ TMDS Type -- Internal
+ DDC Type  -- DVI_DDC
+(II) RADEON(0): Secondary:
+ Monitor   -- NONE
  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=2700 rd=12 min=20000 max=40000;
xclk=16600
 (II) RADEON(0): Forced minimum dotclock to 14.00 MHz (instead of
detected 20.00 MHz)
 (WW) RADEON(0): Failed to detect secondary monitor, MergedFB/Clone mode
disabled

Doesn't the last part suggest that "NONE,CRT" is the feasible
MonitorLayout?

Anyway, the TV screen just went black, allthough I used an approved
ModeLine (worked in DOS).

When I started my tv-out script (X -layout ... doesn't segfault anymore,
I guess all xorg-7.0 needed was a reboot) the signal on the VGA-out
definitely changed, because it went from garbage to black. Garbage is
what I always get when Xorg doesn't control the VGA out, because it's
not using interlacing, the framerate is too high, no composite sync and
so on.
And I know the TV screen doesn't go black just because there's no signal
at all on the VGA out because the TV OSD shows that it's forced to RGB
which needs a certain voltage on a certain pin in the scart adaptor
which isn't there when there's no signal.
I read that modern TV sets just go black when they receive a signal they
totally can't handle. Wouldn't that imply that the radeon driver doesn't
get it quite right?
I also converted the Dos modeline manually following this guide:
http://www.knowplace.org/pages/howtos/xfree86_modelines_conversion_guide.php
The result was exactly the same modeline that Powerstrip printed out
before.

Thanks

Sebastian

-- 
"When the going gets weird, the weird turn pro." (HST)
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