Samsung 460 DXn screen

[Alex Deucher]

On Mon, Aug 4, 2008 at 10:42 PM, Rob Kramer <robk at starhub.net.sg> wrote:
> On 04 August 2008, Alex Deucher wrote:
>> > - Can I use some xorg.conf setting instead of the patch?
>>
>> IIRC, the patch didn't end up being necessary, except that since the
>> tv provides no edid, there's no way to know if there is a monitor
>> attached.  We need to add a quirk for this system to automatically
>> detect it as connected and to remove the VGA port which is not
>> applicable.  We need to find the proper modeline first of course.  If
>> you can sort out the modeline, I'll add the quirk to the driver.
>
> Cool. At the moment I switched to radeonhd, which seems to work in 16 bit
> colour, but is black in 24 bit. But I can test any radeon patches no problem,
> or just switch back to radeon if that works better in 24 bit colour. The
> modeline I'm using in radeonhd is:
>
>  "1360x768" 85.5 1366 1398 1510 1792 768 768 774 795 +hsync +vsync
>
> But I just see that the 1366 H total is probably invalid, not being a multiple
> of 8. Besides that, the zero V frontporch is weird. I'll tweak some more,
> though currently it looks OK.

Can you post your radeonhd log?

>
>> > - How can I tweak the mode?
>>
>> you can play with modelines on the fly with xrandr, e.g.:
>> xrandr --newmode "1360x768_60.00"   84.75  1360 1432 1568 1776  768
>> 771 781 798 -hsync +vsync
>> xrandr --addmode DVI-0 "1360x768_60.00"
>> xrandr --output DVI-0 --mode "1360x768_60.00"
>
> I think I tried that last time, to no avail (the on-screen mode won't budge),
> but I'll try again.

Let me know how it goes.

Alex