Opensource TV Out Issues

[Alex Deucher]

On Wed, Jun 11, 2008 at 4:48 PM, Paul Jones <raptorman18 at gmail.com> wrote:
> Hey,
> i probably didn't explain it well enough the first time, for my first
> problem, I was referring to a black gap between the projection of my
> computer image and the lower limit of the television screen, nothing is
> cutoff. I was just wondering if there was any type of overscan option or an
> option that would increase the vertical size of the Tv-Out projection.
>
> Anyway, in regards to the second problem I had, I was able to use gdb to
> connect to my laptop from my Desktop and get an error message. This happens
> whenever I try to play a video in fullscreen on my television with Tv-Out,
> with my laptop LVDS turned off. I'll attach the file rather than paste it in
> here.
>
> Yeah, I don't know if that's supposed to happen, or is it just me or
> whatever.

Looks like your video app is using the xvidmode extension which isn't
xrandr 1.2 aware.  when you shut off LVDS, that extension looks for
modes on LVDS which is off.  IIRC, I think this might be fixed in
xserver git.

Alex


>
> Anyway, thanks for your interest.
>
> On Wed, Jun 11, 2008 at 10:49 AM, Alex Deucher <alexdeucher at gmail.com>
> wrote:
>>
>> On Tue, Jun 10, 2008 at 7:56 PM, Paul Jones <raptorman18 at gmail.com> wrote:
>> > Hello, I"m having some issues with the opensource radeon driver's tv-out
>> > settings on my ati mobility radeon 9000. I like to use the xrandr
>> > interface
>> > on my Dell D600 laptop, which is currently running Debian Lenny, 2.6.24,
>> > and
>> > whatever version of the ati drivers that is currently in testing.
>> >
>> > I get the TV to display the same thing as my monitor with the following
>> > commands and they work well.
>> >
>> > xrandr --addmode S-video 800x600
>> > xrandr --outut LVDS --mode 800x600
>> > xrandr --output S-video --set tv_vertical_position 5 --mode 800x00
>> > --same-as
>> > LVDS
>> >
>> > However, there is a good region at the bottom of the screen that is not
>> > covered, because the image of my desktop on the TV is too small. So I'm
>> > wondering if there is any overscan setting that exists, or is in the
>> > works,
>> > and how long before we can expect to see it. I'm also wondering if there
>> > is
>> > some other possible work around. There is a setting currently available
>> > through xrandr to adjust the horizontal size (tv_horizontal_size) but
>> > there
>> > does not appear to be a command to adjust the vertical size
>> > (tv_vertical_size doesn't exist?), which could possibly solve my
>> > problem,
>> > since even when I have overscan on in Windows XP with the factory
>> > drivers,
>> > the overscan would leave portions of the screen cutoff.
>> >
>>
>> Tv-out can in theory scale any mode to standard tv modes, however, we
>> only have support in the driver for 800x600 right now.  Since your
>> LVDS native mode is probably larger than 800x600, there will be a part
>> the tv cannot display.
>>
>> > I also want to report a bug that may be of interest, but I'm not even
>> > sure
>> > if it is a bug: When I set the S-Video output I like to turn off my
>> > monitor
>> > with the command xrandr --output LVDS --off. This way I don't feel like
>> > I'm
>> > putting extra life on my laptop monitor and power sources, when I'm
>> > using
>> > TV-Out for extended time periods. However, when I do this and try to
>> > fullscreen the video player, X completely crashes and takes me back to
>> > the
>> > gdm. So, I don't know if it's something I'm doing wrong or a capability
>> > we
>> > just don't have yet.
>>
>> Can you start X in gdb and get a backtrace?
>> http://www.x.org/wiki/Development/Documentation/ServerDebugging
>>
>>
>> Alex
>
>