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-   -   Problem with video acceleration, xv support messed up or insufficient card? (http://www.nvnews.net/vbulletin/showthread.php?t=163865)

uOpt 06-25-11 04:08 PM

Problem with video acceleration, xv support messed up or insufficient card?
 
1 Attachment(s)
I have this setup of displays and I don't get working xv support. HD video gives me a 100% CPU spike for the Xorg process.

20" 1600x1200 (left) --- 30" 2560x1600 (middle) --- 24" 1920x1200 (right)

I wanted to drive 20" and 30" from my gtx7800 and the 24" from my 6200. However, it turns out that the dual-link DVI port on my gtx7800 might be broken, I get a distorted picture every time I connect the 30" display through a dual-link DVI cable (even in text mode). Connecting it single-linked the port works. I then replaced the 6200 with a GT240 which has a working dual-link port. Things look fine before video comes in.

But now I don't get "proper" xv support on the 30" display. Xorg CPU usage spikes to 100" on 1920x1080 video even without scaling and video is choppy.

So, my questions:
  • Do I suffer simply from the GT240 being too wimpy?
  • Or is there is a screwup here such as me forgetting to turn on some random option in xorg.conf
  • Any ideas how to make the dual-link port on the GTX7800 work? The same cable works on the GT240. The distortion I get is one color (all yellow) and blinking and pixels interleaved. I can post a picture if that helps.
  • Maybe the driver gets confused by the unusual setup with the different card in the middle?

%%

To clarify here is the setup again:
Code:


port:      gtx7800#0        gtx240        gtk7800#1
display:      :8.0          :8.1              :8.2
monitor:      20"            30"              24"
status:      (works)        (CPU spike)        (works)

I attached the xorg.conf and the logfile.

`mplayer -v` reports on the display:
Code:

X11 opening display: :8.1
vo: X11 color mask:  FFFFFF  (R:FF0000 G:FF00 B:FF)
vo: X11 running at 2560x1600 with depth 24 and 32 bpp (":8.1" => local display)
[x11] Detected wm supports layers.
[x11] Detected wm supports NetWM.
[x11] Detected wm supports ABOVE state.
[x11] Detected wm supports BELOW state.
[x11] Detected wm supports FULLSCREEN state.
[x11] Detected wm supports STAYS_ON_TOP state.
[x11] Current fstype setting honours LAYER FULLSCREEN STAYS_ON_TOP ABOVE BELOW X atoms
[VO_XV] Using Xv Adapter #0 (NV17 Video Texture)
[xv common] Drawing no colorkey.
[xv common] Maximum source image dimensions: 8192x8192

Code:

X-Video Extension version 2.2
screen #0
  Adaptor #0: "NV17 Video Texture"
    number of ports: 32
    port base: 275
    operations supported: PutImage
    supported visuals:
      depth 24, visualID 0x21
      depth 24, visualID 0x23
      depth 24, visualID 0x24
      depth 24, visualID 0x25
      depth 24, visualID 0x26
      depth 24, visualID 0x27
      depth 24, visualID 0x28
      depth 24, visualID 0x29
      depth 24, visualID 0x2a
      depth 24, visualID 0x2b
      depth 24, visualID 0x2c
      depth 24, visualID 0x2d
      depth 24, visualID 0x2e
      depth 24, visualID 0x2f
      depth 24, visualID 0x30
      depth 24, visualID 0x31
      depth 24, visualID 0x32
      depth 24, visualID 0x33
      depth 24, visualID 0x34
      depth 24, visualID 0x35
      depth 24, visualID 0x36
      depth 24, visualID 0x37
      depth 24, visualID 0x38
      depth 24, visualID 0x39
      depth 24, visualID 0x3a
      depth 24, visualID 0x3b
      depth 24, visualID 0x3c
      depth 24, visualID 0x3d
      depth 24, visualID 0x3e
      depth 24, visualID 0x3f
      depth 24, visualID 0x40
      depth 24, visualID 0x41
      depth 24, visualID 0x42
      depth 24, visualID 0x43
      depth 24, visualID 0x44
      depth 24, visualID 0x45
      depth 24, visualID 0x46
      depth 24, visualID 0x47
      depth 24, visualID 0x48
      depth 24, visualID 0x49
      depth 24, visualID 0x22
      depth 24, visualID 0x4a
      depth 24, visualID 0x4b
      depth 24, visualID 0x4c
      depth 24, visualID 0x4d
      depth 24, visualID 0x4e
      depth 24, visualID 0x4f
      depth 24, visualID 0x50
      depth 24, visualID 0x51
      depth 24, visualID 0x52
      depth 24, visualID 0x53
      depth 24, visualID 0x54
      depth 24, visualID 0x55
      depth 24, visualID 0x56
      depth 24, visualID 0x57
      depth 24, visualID 0x58
      depth 24, visualID 0x59
      depth 24, visualID 0x5a
      depth 24, visualID 0x5b
      depth 24, visualID 0x5c
      depth 24, visualID 0x5d
      depth 24, visualID 0x5e
      depth 24, visualID 0x5f
      depth 24, visualID 0x60
      depth 24, visualID 0x61
      depth 24, visualID 0x62
      depth 24, visualID 0x63
      depth 24, visualID 0x64
      depth 24, visualID 0x65
      depth 24, visualID 0x66
      depth 24, visualID 0x67
      depth 24, visualID 0x68
      depth 24, visualID 0x69
      depth 24, visualID 0x6a
      depth 24, visualID 0x6b
      depth 24, visualID 0x6c
      depth 24, visualID 0x6d
      depth 24, visualID 0x6e
      depth 24, visualID 0x6f
      depth 24, visualID 0x70
    number of attributes: 3
      "XV_SET_DEFAULTS" (range 0 to 0)
              client settable attribute
      "XV_ITURBT_709" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_SYNC_TO_VBLANK" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 1)
    maximum XvImage size: 4096 x 4096
    Number of image formats: 4
      id: 0x32595559 (YUY2)
        guid: 59555932-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x32315659 (YV12)
        guid: 59563132-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x59565955 (UYVY)
        guid: 55595659-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x30323449 (I420)
        guid: 49343230-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
  Adaptor #1: "NV05 Video Blitter"
    number of ports: 32
    port base: 307
    operations supported: PutImage
    supported visuals:
      depth 24, visualID 0x21
      depth 24, visualID 0x23
      depth 24, visualID 0x24
      depth 24, visualID 0x25
      depth 24, visualID 0x26
      depth 24, visualID 0x27
      depth 24, visualID 0x28
      depth 24, visualID 0x29
      depth 24, visualID 0x2a
      depth 24, visualID 0x2b
      depth 24, visualID 0x2c
      depth 24, visualID 0x2d
      depth 24, visualID 0x2e
      depth 24, visualID 0x2f
      depth 24, visualID 0x30
      depth 24, visualID 0x31
      depth 24, visualID 0x32
      depth 24, visualID 0x33
      depth 24, visualID 0x34
      depth 24, visualID 0x35
      depth 24, visualID 0x36
      depth 24, visualID 0x37
      depth 24, visualID 0x38
      depth 24, visualID 0x39
      depth 24, visualID 0x3a
      depth 24, visualID 0x3b
      depth 24, visualID 0x3c
      depth 24, visualID 0x3d
      depth 24, visualID 0x3e
      depth 24, visualID 0x3f
      depth 24, visualID 0x40
      depth 24, visualID 0x41
      depth 24, visualID 0x42
      depth 24, visualID 0x43
      depth 24, visualID 0x44
      depth 24, visualID 0x45
      depth 24, visualID 0x46
      depth 24, visualID 0x47
      depth 24, visualID 0x48
      depth 24, visualID 0x49
      depth 24, visualID 0x22
      depth 24, visualID 0x4a
      depth 24, visualID 0x4b
      depth 24, visualID 0x4c
      depth 24, visualID 0x4d
      depth 24, visualID 0x4e
      depth 24, visualID 0x4f
      depth 24, visualID 0x50
      depth 24, visualID 0x51
      depth 24, visualID 0x52
      depth 24, visualID 0x53
      depth 24, visualID 0x54
      depth 24, visualID 0x55
      depth 24, visualID 0x56
      depth 24, visualID 0x57
      depth 24, visualID 0x58
      depth 24, visualID 0x59
      depth 24, visualID 0x5a
      depth 24, visualID 0x5b
      depth 24, visualID 0x5c
      depth 24, visualID 0x5d
      depth 24, visualID 0x5e
      depth 24, visualID 0x5f
      depth 24, visualID 0x60
      depth 24, visualID 0x61
      depth 24, visualID 0x62
      depth 24, visualID 0x63
      depth 24, visualID 0x64
      depth 24, visualID 0x65
      depth 24, visualID 0x66
      depth 24, visualID 0x67
      depth 24, visualID 0x68
      depth 24, visualID 0x69
      depth 24, visualID 0x6a
      depth 24, visualID 0x6b
      depth 24, visualID 0x6c
      depth 24, visualID 0x6d
      depth 24, visualID 0x6e
      depth 24, visualID 0x6f
      depth 24, visualID 0x70
    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)
    maximum XvImage size: 2046 x 2046
    Number of image formats: 5
      id: 0x32595559 (YUY2)
        guid: 59555932-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x32315659 (YV12)
        guid: 59563132-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x59565955 (UYVY)
        guid: 55595659-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x30323449 (I420)
        guid: 49343230-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x3
        guid: 03000000-0000-0010-8000-00aa00389b71
        bits per pixel: 32
        number of planes: 1
        type: RGB (packed)
        depth: 24
        red, green, blue masks: 0xff0000, 0xff00, 0xff
screen #1
  Adaptor #0: "NV17 Video Texture"
    number of ports: 32
    port base: 558
    operations supported: PutImage
    supported visuals:
      depth 24, visualID 0x154
      depth 24, visualID 0x156
      depth 24, visualID 0x157
      depth 24, visualID 0x158
      depth 24, visualID 0x159
      depth 24, visualID 0x15a
      depth 24, visualID 0x15b
      depth 24, visualID 0x15c
      depth 24, visualID 0x15d
      depth 24, visualID 0x15e
      depth 24, visualID 0x15f
      depth 24, visualID 0x160
      depth 24, visualID 0x161
      depth 24, visualID 0x162
      depth 24, visualID 0x163
      depth 24, visualID 0x164
      depth 24, visualID 0x165
      depth 24, visualID 0x166
      depth 24, visualID 0x167
      depth 24, visualID 0x168
      depth 24, visualID 0x169
      depth 24, visualID 0x16a
      depth 24, visualID 0x16b
      depth 24, visualID 0x16c
      depth 24, visualID 0x16d
      depth 24, visualID 0x16e
      depth 24, visualID 0x16f
      depth 24, visualID 0x170
      depth 24, visualID 0x155
      depth 24, visualID 0x171
      depth 24, visualID 0x172
      depth 24, visualID 0x173
      depth 24, visualID 0x174
      depth 24, visualID 0x175
      depth 24, visualID 0x176
      depth 24, visualID 0x177
      depth 24, visualID 0x178
      depth 24, visualID 0x179
      depth 24, visualID 0x17a
      depth 24, visualID 0x17b
      depth 24, visualID 0x17c
      depth 24, visualID 0x17d
      depth 24, visualID 0x17e
      depth 24, visualID 0x17f
      depth 24, visualID 0x180
      depth 24, visualID 0x181
      depth 24, visualID 0x182
      depth 24, visualID 0x183
      depth 24, visualID 0x184
      depth 24, visualID 0x185
      depth 24, visualID 0x186
      depth 24, visualID 0x187
      depth 24, visualID 0x188
      depth 24, visualID 0x189
      depth 24, visualID 0x18a
      depth 24, visualID 0x18b
    number of attributes: 7
      "XV_SET_DEFAULTS" (range 0 to 0)
              client settable attribute
      "XV_ITURBT_709" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_SYNC_TO_VBLANK" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 1)
      "XV_BRIGHTNESS" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_CONTRAST" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_SATURATION" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_HUE" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
    maximum XvImage size: 8192 x 8192
    Number of image formats: 4
      id: 0x32595559 (YUY2)
        guid: 59555932-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x32315659 (YV12)
        guid: 59563132-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x59565955 (UYVY)
        guid: 55595659-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x30323449 (I420)
        guid: 49343230-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
screen #2
  Adaptor #0: "NV17 Video Texture"
    number of ports: 32
    port base: 833
    operations supported: PutImage
    supported visuals:
      depth 24, visualID 0x24f
      depth 24, visualID 0x251
      depth 24, visualID 0x252
      depth 24, visualID 0x253
      depth 24, visualID 0x254
      depth 24, visualID 0x255
      depth 24, visualID 0x256
      depth 24, visualID 0x257
      depth 24, visualID 0x258
      depth 24, visualID 0x259
      depth 24, visualID 0x25a
      depth 24, visualID 0x25b
      depth 24, visualID 0x25c
      depth 24, visualID 0x25d
      depth 24, visualID 0x25e
      depth 24, visualID 0x25f
      depth 24, visualID 0x260
      depth 24, visualID 0x261
      depth 24, visualID 0x262
      depth 24, visualID 0x263
      depth 24, visualID 0x264
      depth 24, visualID 0x265
      depth 24, visualID 0x266
      depth 24, visualID 0x267
      depth 24, visualID 0x268
      depth 24, visualID 0x269
      depth 24, visualID 0x26a
      depth 24, visualID 0x26b
      depth 24, visualID 0x26c
      depth 24, visualID 0x26d
      depth 24, visualID 0x26e
      depth 24, visualID 0x26f
      depth 24, visualID 0x270
      depth 24, visualID 0x271
      depth 24, visualID 0x272
      depth 24, visualID 0x273
      depth 24, visualID 0x274
      depth 24, visualID 0x275
      depth 24, visualID 0x276
      depth 24, visualID 0x277
      depth 24, visualID 0x250
      depth 24, visualID 0x278
      depth 24, visualID 0x279
      depth 24, visualID 0x27a
      depth 24, visualID 0x27b
      depth 24, visualID 0x27c
      depth 24, visualID 0x27d
      depth 24, visualID 0x27e
      depth 24, visualID 0x27f
      depth 24, visualID 0x280
      depth 24, visualID 0x281
      depth 24, visualID 0x282
      depth 24, visualID 0x283
      depth 24, visualID 0x284
      depth 24, visualID 0x285
      depth 24, visualID 0x286
      depth 24, visualID 0x287
      depth 24, visualID 0x288
      depth 24, visualID 0x289
      depth 24, visualID 0x28a
      depth 24, visualID 0x28b
      depth 24, visualID 0x28c
      depth 24, visualID 0x28d
      depth 24, visualID 0x28e
      depth 24, visualID 0x28f
      depth 24, visualID 0x290
      depth 24, visualID 0x291
      depth 24, visualID 0x292
      depth 24, visualID 0x293
      depth 24, visualID 0x294
      depth 24, visualID 0x295
      depth 24, visualID 0x296
      depth 24, visualID 0x297
      depth 24, visualID 0x298
      depth 24, visualID 0x299
      depth 24, visualID 0x29a
      depth 24, visualID 0x29b
      depth 24, visualID 0x29c
      depth 24, visualID 0x29d
      depth 24, visualID 0x29e
    number of attributes: 3
      "XV_SET_DEFAULTS" (range 0 to 0)
              client settable attribute
      "XV_ITURBT_709" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_SYNC_TO_VBLANK" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 1)
    maximum XvImage size: 4096 x 4096
    Number of image formats: 4
      id: 0x32595559 (YUY2)
        guid: 59555932-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x32315659 (YV12)
        guid: 59563132-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x59565955 (UYVY)
        guid: 55595659-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x30323449 (I420)
        guid: 49343230-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
  Adaptor #1: "NV05 Video Blitter"
    number of ports: 32
    port base: 865
    operations supported: PutImage
    supported visuals:
      depth 24, visualID 0x24f
      depth 24, visualID 0x251
      depth 24, visualID 0x252
      depth 24, visualID 0x253
      depth 24, visualID 0x254
      depth 24, visualID 0x255
      depth 24, visualID 0x256
      depth 24, visualID 0x257
      depth 24, visualID 0x258
      depth 24, visualID 0x259
      depth 24, visualID 0x25a
      depth 24, visualID 0x25b
      depth 24, visualID 0x25c
      depth 24, visualID 0x25d
      depth 24, visualID 0x25e
      depth 24, visualID 0x25f
      depth 24, visualID 0x260
      depth 24, visualID 0x261
      depth 24, visualID 0x262
      depth 24, visualID 0x263
      depth 24, visualID 0x264
      depth 24, visualID 0x265
      depth 24, visualID 0x266
      depth 24, visualID 0x267
      depth 24, visualID 0x268
      depth 24, visualID 0x269
      depth 24, visualID 0x26a
      depth 24, visualID 0x26b
      depth 24, visualID 0x26c
      depth 24, visualID 0x26d
      depth 24, visualID 0x26e
      depth 24, visualID 0x26f
      depth 24, visualID 0x270
      depth 24, visualID 0x271
      depth 24, visualID 0x272
      depth 24, visualID 0x273
      depth 24, visualID 0x274
      depth 24, visualID 0x275
      depth 24, visualID 0x276
      depth 24, visualID 0x277
      depth 24, visualID 0x250
      depth 24, visualID 0x278
      depth 24, visualID 0x279
      depth 24, visualID 0x27a
      depth 24, visualID 0x27b
      depth 24, visualID 0x27c
      depth 24, visualID 0x27d
      depth 24, visualID 0x27e
      depth 24, visualID 0x27f
      depth 24, visualID 0x280
      depth 24, visualID 0x281
      depth 24, visualID 0x282
      depth 24, visualID 0x283
      depth 24, visualID 0x284
      depth 24, visualID 0x285
      depth 24, visualID 0x286
      depth 24, visualID 0x287
      depth 24, visualID 0x288
      depth 24, visualID 0x289
      depth 24, visualID 0x28a
      depth 24, visualID 0x28b
      depth 24, visualID 0x28c
      depth 24, visualID 0x28d
      depth 24, visualID 0x28e
      depth 24, visualID 0x28f
      depth 24, visualID 0x290
      depth 24, visualID 0x291
      depth 24, visualID 0x292
      depth 24, visualID 0x293
      depth 24, visualID 0x294
      depth 24, visualID 0x295
      depth 24, visualID 0x296
      depth 24, visualID 0x297
      depth 24, visualID 0x298
      depth 24, visualID 0x299
      depth 24, visualID 0x29a
      depth 24, visualID 0x29b
      depth 24, visualID 0x29c
      depth 24, visualID 0x29d
      depth 24, visualID 0x29e
    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)
    maximum XvImage size: 2046 x 2046
    Number of image formats: 5
      id: 0x32595559 (YUY2)
        guid: 59555932-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x32315659 (YV12)
        guid: 59563132-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x59565955 (UYVY)
        guid: 55595659-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x30323449 (I420)
        guid: 49343230-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x3
        guid: 03000000-0000-0010-8000-00aa00389b71
        bits per pixel: 32
        number of planes: 1
        type: RGB (packed)
        depth: 24
        red, green, blue masks: 0xff0000, 0xff00, 0xff


uOpt 06-25-11 04:17 PM

Re: Problem with video acceleration, xv support messed up or insufficient card?
 
Post about it, find it yourself. Works every time.

The problem is that both mplayer and xine pick up the XV ports for adapter #0, although the $DISPLAY they are on lives on adapter #1. Subsequently xv does nothing.

How would I go about forcing them to use xv from the right adapter?

uOpt 06-25-11 07:56 PM

Re: Problem with video acceleration, xv support messed up or insufficient card?
 
This is getting tough.

VDPAU actually makes HD video on the 30" display on the non-primary graphics card work. Unfortunately there is trouble. On this particular machine performance with xv is better than vdpau. I have about 67% CPU for mplayer with vdpau and things are not entirely smooth. Worse, ending mplayer with Control-C just lead to a bus hang (X11 hangs, network shells continued to work until they tried to do disk I/O). Finally, although vdpau seems to work on the second adapter it refuses to work on the primary adapter. That would be all fine with vdpau for the 30" and xv for the 24" inch but alas vdpau isn't smooth and xv is.

I now made the 30" display the :<x>.0 display and declared it's adapter the primary adapter in the BIOS, but still a call to xvinfo reveals that as far as xv is concerned the gtx7800 is still the primary card. So still no xv for the 30" display. I suppose to actually exchange this I'd have to exchange the physical slot of the PCIe video cards.

Sadly, using x11 as the video driver works fine, but of course now I lost scaling support.

mplayer has a -vo xv: port=<x> option but I tried every one of the 32 ports on the card I want and it always fails to get that port, presumably because now I'm on the wrong adapter (or adaptor as xvinfo calls it). The xv:adapter=<x> option seems to be DirectX only and I confirmed it doesn't work.

Still looking for ideas out of this mess. What could possibly be wrong with the dual-link port on the 7800GTX?

uOpt 06-27-11 06:35 PM

Re: Problem with video acceleration, xv support messed up or insufficient card?
 
Just to keep things updated for people who might come across the same problem:

The thing that works is using the "GL" driver for that 30" display on the second card and "xv" for the 24 on the first card. vdpau did cause a machine crash and had white sparkles in black areas of the video. The GL driver in mplayer seems to work without crashes and without distortions.

That's still not quite optimal since CPU usage is 66% for either vdpau and GL (curious it is right about identical) and slight machine activity makes the video stutter. Using the "xv" driver on the 24" display I don't get either, it just works (that is on both displays with the video at the same resolution, so the 30" more pixels shouldn't count). I'm not sure that's rooted in the better graphics card or the drivers.

The way things are going I think I will have no choice but new card(s).

So I'm still looking for suggestions to:
- either make the "xv" driver work for the non-first display
- or suggestions about what could be wrong and fixable with my 7800's dual-link port


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