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Old 12-03-07, 10:15 AM   #1
petr_p
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Default xorg-server-1.4: Contrast/brightness of XVideo not adjustable

After upgrading to xorg-server version 1.4 (X.org release 7.3), I have lost capability to control brightness or contrast of XVideo. My VGA card is NV11 [GeForce2 MX/MX 400] and driver in version 96.43.01.

xvinfo reports only two attributes now:

X-Video Extension version 2.2
screen #0
Adaptor #0: "NV05 Video Blitter"
number of ports: 32
port base: 126
operations supported: PutImage
[...]
number of attributes: 2
"XV_SET_DEFAULTS" (range 0 to 0)
client settable attribute
"XV_SYNC_TO_VBLANK" (range 0 to 1)
client settable attribute
client gettable attribute (current value is 0)
[...]

OTOH, using nv driver comming with X.org take back attributes for contrast and brightness and their adjusting works fine (e.g. in MPlayer).
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Old 12-03-07, 10:32 AM   #2
Thunderbird
 
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Default Re: xorg-server-1.4: Contrast/brightness of XVideo not adjustable

Do you have composite enabled or not? When composite is on (e.g. for use with some composition manager like compiz or some other) overlay is done using textures and blitting instead of using hardware video overlay. (I guess the hw video overlay isn't advertised at the moment for you)
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Old 12-04-07, 10:33 AM   #3
petr_p
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Default Re: xorg-server-1.4: Contrast/brightness of XVideo not adjustable

Extension COMPOSITE is loaded, but I don't use any composite manager (just plain WM -- blackbox). I tryied to disable this extention in xorg.conf but either Disable "composite" nor Subsection "extmod"*/ Option "omit composite" did work.

I suspect nvidia-driver not being compatible with xorg-server-1.4. This version according X.org breaks ABI and some X11 modules needs rebuild. As I've said the only change was xorg-server upgrade with some of its dependencies.

It would be nice if anybody confirm that he has not this problem. I've never seen anybody using this combinatino of version of Xorg, nvidia driver and card.
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Old 12-04-07, 12:46 PM   #4
AaronP
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Default Re: xorg-server-1.4: Contrast/brightness of XVideo not adjustable

The syntax to disable Composite is
Code:
Section "Extensions"
  Option "Composite" "Disable"
EndSection
The Xv overlay adaptor is disabled whenever the Composite extension is enabled, regardless of whether a composite manager is running. This is necessary because any window, including Xv windows, can be redirected at any time. The reason the overlay adaptor disappeared when you installed server 1.4 is because that server enables Composite by default, while earlier servers required it to be enabled explicitly.

The NVIDIA driver supports the 2.x ABI used by server 1.4.
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Old 12-04-07, 01:09 PM   #5
petr_p
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Default Re: xorg-server-1.4: Contrast/brightness of XVideo not adjustable

You are right. The Extension section takes effect. It really disables composite extension and then video overlay adaptor is back. xorg.conf(5) man page seems having some deficiencies regarding this section.

Thank all you very much. Problem solved.
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