Bug#437332: xserver-xorg-video-ati: Failed to detect secondary monitor, MergedFB/Clone mode disabled
Alberto Mardegan wrote:
> I tried the package you pointed me to; I don't see any apparent
> improvement, but the logs have definitely changed and now they report
> three ports (?).
Three ports are quite common actually, even if the driver has never been
able to exploit them so far. Such a board often has 2 rendering
pipelines that can be programmed to write on various ports.
> Maybe we can have some faster progressing if I add some debugging
> printfs here and there in the driver; is there a mailing list for it?
> Or in any case, feel free to tell me some things to try out.
Could you send the output of xrandr --verbose with this driver? (make
sure you have xbase-clients 7.2 installed).
> Monitor -- AUTO
> Connector -- VGA
> DAC Type -- TVDAC/ExtDAC
> TMDS Type -- None
> DDC Type -- CRT2_DDC
> (II) RADEON(0): Port1:
> Monitor -- AUTO
> Connector -- Proprietary/LVDS
> DAC Type -- None
> TMDS Type -- None
> DDC Type -- LCD_DDC
> (II) RADEON(0): Port2:
> Monitor -- AUTO
> Connector -- STV
> DAC Type -- TVDAC/ExtDAC
> TMDS Type -- None
> DDC Type -- NONE
It sees the VGA output, the internal LVDS panel, and a TV output.
> (II) RADEON(0): Output VGA-1 disconnected
> (II) RADEON(0): Output LVDS connected
> (II) RADEON(0): Output S-video disconnected
> (II) RADEON(0): Output LVDS using initial mode 1280x800
But it does not see that VGA-1 is connected. I hope it's not caused by
your not behaving as a real monitor (that's why I asked earlier whether
you could try with a real monitor). Or it could be a problem with the
connector table.
Does it help if you do something like this?
xrandr --addmode VGA-1 800x600
xrandr --output VGA-1 --mode 800x600
I'll see with Alex Deucher who wrote this code, he might have an idea.
Brice
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