[Openchrome-users] No signal? cx700m2, xorg7.1 and TFT monitor

[Xavier Bachelot]

Christian Gleerup wrote:
> Hi list.
> I have recently bought a via epia ex1000 but I cannot get the graphics card to work.
> that is, I have managed to get X load the driver, but there is no picture, ad my monitor turns off.
> 
> I have tried both CRT and LCD option, and without the TVOutput option
> 
> there is apparently no signal on neither the DVI-out, composite-out or S-Video out, I haven't checked the 'YCbCr' since I don't know how to connect them.
> 
> I am using the experimental branch of the drivers, which I think is correct.
> 
> I am posting any information I hope can help solve this problem.
> 
> green_gentoo cg # lspci | grep VGA
> 01:00.0 VGA compatible controller: VIA Technologies, Inc. Unknown device 3157 (rev 03)
> 
> 
> /etx/X11/xorg.conf
> ...
> Section "Device"
>     Identifier  "unichrome"
>     Driver      "via"
>     Option "ActiveDevice" "LCD"
>     Option "TVOutput" "S-Video"
>     VideoRam    65536
>     # Insert Clocks lines here if appropriate
> EndSection
> ...

You must use "CRT" when driving a screen connected to VGA output.
As you don't want to use TV-out, remove "TVOutput" "S-Video". Using both 
VGA and TV-Out would restrain the available resolutions anyway, so make 
it work with VGA only first. For info, the option for VGA + TV output 
would be "CRT,TV".
There's no need to set the VideoRam size, it should be auto-detected.

> Section "Screen"
>     Identifier  "Screen 1"
>     Device      "unichrome"
>     Monitor     "viewsonic"
>     DefaultDepth 24
> 
>     Subsection "Display"
>         Depth       24
>         Modes       "1280x1024" "1024x768" "800x600" "640x480"
>         ViewPort    0 0
>     EndSubsection
> EndSection
> ...
> section "Monitor"
>     Identifier  "viewsonic"
>     Option      "DPMS"
>     HorizSync   31.5 - 48.5
>     VertRefresh 50-100
> EndSection
> ...
> 
I assume your screen should be able to advertise the HorizSync and 
VertRefresh by itself, so remove these 2 lines.

Please provide the xorg.log if that still doesn't work.

Regards,
Xavier