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Could it be a problem with xv ??
ben at xsusio
May 5, 2003, 8:25 AM
Post #1 of 7 (1635 views)
Permalink
Ina desparate attempt to figure out the answer to my problem (see below)
I used the "NO_XV" environment variable to disable XV while I used
MythTV so I could take a screenshot.

Unfortunately, my problem did not seem to appear when I disabled XV.
So, could this be an XV problem? Does anyone have any ideas of other
ways I can narrow down the source of this problem?

Here's some background on the problem: When I start MythTV (which
starts in fullscreen mode) it looks like a badly-shuffled deck of cards.
In other words, the output is devided up into tiny pixel-high
horizontall lines, and each of them is displaced. I can't really think
of a better way to explain it. If I keep the output in a maximized
window mode, and move it slightly to the left or right, it fixes itself
-- No more lines. But when I move it back towards the center, the lines
get displaced again.
Re: Could it be a problem with xv ?? [ In reply to ]
ijr at po
May 5, 2003, 8:36 AM
Post #2 of 7 (1621 views)
Permalink
On Monday 05 May 2003 11:25 am, Ben Davis wrote:
> Ina desparate attempt to figure out the answer to my problem (see below)
> I used the "NO_XV" environment variable to disable XV while I used
> MythTV so I could take a screenshot.
>
> Unfortunately, my problem did not seem to appear when I disabled XV.
> So, could this be an XV problem? Does anyone have any ideas of other
> ways I can narrow down the source of this problem?
>
> Here's some background on the problem: When I start MythTV (which
> starts in fullscreen mode) it looks like a badly-shuffled deck of cards.
> In other words, the output is devided up into tiny pixel-high
> horizontall lines, and each of them is displaced. I can't really think
> of a better way to explain it. If I keep the output in a maximized
> window mode, and move it slightly to the left or right, it fixes itself
> -- No more lines. But when I move it back towards the center, the lines
> get displaced again.

It very well could be an issue with Xv support in your video card driver, yes.
Have you tried playing with the overscan/offset numbers in setup? Might be
able to sort of replicate moving the window around with that.

Isaac

>
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> mythtv-users mailing list
> mythtv-users@snowman.net
> http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
Re: Could it be a problem with xv ?? [ In reply to ]
ben at xsusio
May 5, 2003, 2:28 PM
Post #3 of 7 (1608 views)
Permalink
Isaac Richards wrote:

>On Monday 05 May 2003 11:25 am, Ben Davis wrote:
>
>
>>In a desparate attempt to figure out the answer to my problem (see below)
>>I used the "NO_XV" environment variable to disable XV while I used
>>MythTV so I could take a screenshot.
>>
>>Unfortunately, my problem did not seem to appear when I disabled XV.
>>So, could this be an XV problem? Does anyone have any ideas of other
>>ways I can narrow down the source of this problem?
>>
>>Here's some background on the problem: When I start MythTV (which
>>starts in fullscreen mode) it looks like a badly-shuffled deck of cards.
>>In other words, the output is devided up into tiny pixel-high
>>horizontall lines, and each of them is displaced. I can't really think
>>of a better way to explain it. If I keep the output in a maximized
>>window mode, and move it slightly to the left or right, it fixes itself
>>-- No more lines. But when I move it back towards the center, the lines
>>get displaced again.
>>
>>
>
>It very well could be an issue with Xv support in your video card driver, yes.
>Have you tried playing with the overscan/offset numbers in setup? Might be
>able to sort of replicate moving the window around with that.
>
>Isaac
>
Well, I tried changing around the offset/overscan options and they
didn't work very well. Sometimes I would change it and I would go back
and the preference was not saved.. Anyways, when I did get it to save
the preference, the offsets did not effect the output in any way. I set
the horizontal offset to 20 and it didn't offset the image at all... I
really wish I knew what the hell was going on here.. and I also wish
someone else could see it w/ their own eyes :-(
Re: Could it be a problem with xv ?? [ In reply to ]
ben at xsusio
May 6, 2003, 6:04 AM
Post #4 of 7 (1614 views)
Permalink
Ok, I've finally found out it most likeley IS a problem with XV... I
just downloaded OGLE dvd player, and I have the exact same
fullscreen/crappy-looking issues.

Is there anyone out there that may have any experience with XV that can
help me troubleshoot this problem? or should I *gasp* email the xv lists?

~Ben

Ben Davis wrote:

> Isaac Richards wrote:
>
>> On Monday 05 May 2003 11:25 am, Ben Davis wrote:
>>
>>
>>> In a desparate attempt to figure out the answer to my problem (see
>>> below)
>>> I used the "NO_XV" environment variable to disable XV while I used
>>> MythTV so I could take a screenshot.
>>>
>>> Unfortunately, my problem did not seem to appear when I disabled XV.
>>> So, could this be an XV problem? Does anyone have any ideas of other
>>> ways I can narrow down the source of this problem?
>>>
>>> Here's some background on the problem: When I start MythTV (which
>>> starts in fullscreen mode) it looks like a badly-shuffled deck of
>>> cards.
>>> In other words, the output is devided up into tiny pixel-high
>>> horizontall lines, and each of them is displaced. I can't really think
>>> of a better way to explain it. If I keep the output in a maximized
>>> window mode, and move it slightly to the left or right, it fixes itself
>>> -- No more lines. But when I move it back towards the center, the lines
>>> get displaced again.
>>>
>>
>>
>> It very well could be an issue with Xv support in your video card
>> driver, yes. Have you tried playing with the overscan/offset numbers
>> in setup? Might be able to sort of replicate moving the window
>> around with that.
>>
>> Isaac
>>
> Well, I tried changing around the offset/overscan options and they
> didn't work very well. Sometimes I would change it and I would go
> back and the preference was not saved.. Anyways, when I did get it to
> save the preference, the offsets did not effect the output in any
> way. I set the horizontal offset to 20 and it didn't offset the image
> at all... I really wish I knew what the hell was going on here.. and
> I also wish someone else could see it w/ their own eyes :-(
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@snowman.net
> http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
Re: Could it be a problem with xv ?? [ In reply to ]
ray at comarre
May 6, 2003, 7:58 AM
Post #5 of 7 (1613 views)
Permalink
At 08:04 AM 5/6/2003 -0500, Ben Davis wrote:
>Ok, I've finally found out it most likeley IS a problem with XV... I just
>downloaded OGLE dvd player, and I have the exact same
>fullscreen/crappy-looking issues.
>
>Is there anyone out there that may have any experience with XV that can
>help me troubleshoot this problem? or should I *gasp* email the xv lists?

If you know of any "xv lists", I'd be interested in references to them.

As to your problem ... I went back over your prior messages (all the ones I
still had, anyway) and I notice that you haven't reported any details about
your video-out setup ... like what version of X, what X server, and what
actual video card are involved. (Also what Linux distro.)

I don't know whether you will be able to get help here or not. I do know
you won't be able to get help anywhere without providing those details. xv
implementations are X-server specific, so any problem is most likely tied
to your particular server/card combo.
Re: Could it be a problem with xv ?? [ In reply to ]
ben at xsusio
May 6, 2003, 8:53 AM
Post #6 of 7 (1614 views)
Permalink
Ray Olszewski wrote:

> I don't know whether you will be able to get help here or not. I do
> know you won't be able to get help anywhere without providing those
> details. xv implementations are X-server specific, so any problem is
> most likely tied to your particular server/card combo.

Good point.. I keep forgetting people don't have telepathy :-)

Software:
Gentoo linux
2.4.2 kernel w/ bytesex.org v4l patches, among others
XFree86 4.3.0-r1
xv 3.10
nvidia driver 1.0.4363

Hardware:
ASUS A7v333 mobo
AthlonXP 1800+
GeForce4 Ti 4200 AGP 8x
Using DVI output to Dell 1900fp


I'm beginning to wonder if it's my kernel.. I'm using a patched version
of the kernel from gentoo, which provides performance enhancing features
(like low latency scheduling, etc).. however I had replace the v4l
sources in this because their patches for v4l were out of date.
Re: Could it be a problem with xv ?? [ In reply to ]
ben at xsusio
May 6, 2003, 1:05 PM
Post #7 of 7 (1612 views)
Permalink
kf0yn@mchsi.com wrote:

>>Software:
>> Gentoo linux
>> 2.4.2 kernel w/ bytesex.org v4l patches, among others
>>
>>
>
>I think maybe you mean 2.4.20 here? :-)
>
>I'm curious as to whether you've tried any of the adjustments in nvtv.
>
>
yes I meant 2.4.20.. sorry..

Also, if you read my hardware specs you'll see that I'm using DVI output
to my flat panel monitor.. I have no use for nvtv at the moment.

~Ben

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