R600, S-Video TV out for PAL, and horizontal rolling

Dimitris Lampridis dlampridis at gmail.com
Sat Jun 26 15:13:01 PDT 2010

On Sat, Jun 26, 2010 at 11:44 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Sat, Jun 26, 2010 at 1:14 PM, Dimitris Lampridis
> <dlampridis at gmail.com> wrote:
>> On Sat, Jun 26, 2010 at 6:34 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
>>> On Sat, Jun 26, 2010 at 12:24 PM, Dimitris Lampridis
>>> <dlampridis at gmail.com> wrote:
>>>> On Sat, Apr 3, 2010 at 8:11 AM, Dave Airlie <airlied at gmail.com> wrote:
>>>>> Not sure it ever worked I think I remembered seeing something similiar
>>>>> last time I tried PAL I just haven't had time to get back to it.
>>>>> Dave.
>>>> Sorry for coming back so late with a reply, but I had to leave the
>>>> whole TV out problem aside for some time.
>>>> I tried hard to figure this out. So far, I found one indication that
>>>> TV out on PAL used to work:
>>>> http://www.phoronix.com/forums/showthread.php?t=6281
>>>> There, it is mentioned that in December 2007, Alex Deucher submitted a
>>>> patch that fixed some problems with PAL TV out, and a number of users
>>>> reported success after that.
>>>> I had a look at the git history, and they obviously refer to commit
>>>> 2b1fae668ddabbc72e5fc31365302ea722174df1 "fix PAL tv-out", submitted
>>>> on 26 Dec 2007.
>>>> I also had a look at the changes applied to the radeon_tv.c file after
>>>> this particular commit. Some of the PAL related lines did change but,
>>>> as far as I can tell, not in a way that would break the fix introduced
>>>> in 2007.
>>>> So, I'm stuck again, but at least I know now that PAL TV out used to
>>>> work. Any further ideas?
>>> That commit referred to pre-avivo cards. For r5xx+ cards, try
>>> xf86-video-ati 6.13.0.
>> I was using the 6.13.0, now I'm using latest from master branch of
>> git, also got KMS working nicely, but TV out is always out of
>> (horizontal) sync.
> Is your tv standard set correctly?  Note that the xrandr attribute for
> tv standard with kms is "tv standard"
> xrandr --output DIN --set "tv standard" pal
> Also, if you are using kms, make sure you have at least kernel 2.6.34
> as pal tv out was broken with kms in earlier versions.
> Alex

All checked. I tried tried selecting PAL with xrandr already, and
kernel is indeed 2.6.34 (the problem was also there with earlier
kernels and no KMS). Using xrandr to switch from NTSC (default in my
card) to  PAL does have an effect, I get proper colours and stable
vertical sync, but the horizontal is out of sync.


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