[mythtv] XV picture controls issue

[Justin Luitjens]

Hi,

Whenever I try to change the XV picture controls the slider changes to -1.

Using the latest source I have gone through the Code and traced the 
problem as far as the file: videoout_xv.cpp
at line number 3084.  Here is a code fragement:
====================================
 XvAttribute *attributes = NULL;
    int howmany;
    X11S(attributes = XvQueryPortAttributes(XJ_disp, xv_port, &howmany));
    if (!attributes)
        return -1;

    bool value_set = false;
    for (int i = 0; i < howmany; i++)
    {
        cout << "attrName=" << attrName << " attributes[i].name=" << 
attributes[i].name << endl;
        if (attrName != attributes[i].name)
            continue;
======================================

This produces the following output:
attrName=XV_BRIGHTNESS attributes[i].name=XV_SET_DEFAULTS
attrName=XV_BRIGHTNESS attributes[i].name=XV_ITURBT_709
attrName=XV_BRIGHTNESS attributes[i].name=XV_SYNC_TO_VBLANK


Is there something wrong with my XV?   I am using Fedora Core 6.  My 
graphics card is a Nvidia Geforce 7100.

Thanks,
Justin