Randr reports refresh rate = 0 for Radeon

[Gilles Dartiguelongue]

Just for the record, here is the result for my Radeon 9000 PCI in
mergedfb mode (which might be the cause of those funky refresh rates).
Feel free to contact me off list if you want more infos.

xorg-server-1.3.0
xf86-video-ati-6.6.191
libXrandr-1.2.1 (with 1.2.1 proto)
xrandr-1.2.0

$ xrandr --verbose
Screen 0: minimum 2048 x 768, current 2560 x 1024, maximum 2560 x 1024
default connected 2560x1024+0+0 normal (normal) 0mm x 0mm
        Identifier: 0x53
        Timestamp:  1531088929
        Subpixel:   horizontal rgb
        Clones:     
        CRTC:       0
        CRTCs:      0
  2560x1024 (0x54) 3045.6MHz
        h: width  2560 start    0 end    0 total 2560 skew    0 clock
1189.7KHz
        v: height 1024 start    0 end    0 total 1024           clock
1161.8Hz
  2048x768 (0x55)  968.4MHz
        h: width  2048 start    0 end    0 total 2048 skew    0 clock
472.8KHz
        v: height  768 start    0 end    0 total  768           clock
615.7Hz

-- 
Gilles Dartiguelongue <dartigug at esiee.fr>
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