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we've got a rhel6 with 2 gigabyte gv-r455hm-512i ati radeon card and 4 lg 32ld420 tv connected to it. when we start x then it can't detect the monitors, but if we plug an lcd monitor to it when start the x and after x started the replace the monitor with the tv the tv works properly (until we restart x).

the same video card and monitor works with fedora 16 without problem with kde, but crash with gnome (ie don't have to replace the tv to monitor in case of x start).

How do you connect the monitor ? DP, DVI, HDMI, VGA ?

Do you use adaptor ? DVI->HDMI, HDMI->DVI ?

Please attach dmesg when booting with drm.debug=14 with the 4 tv connected.

since the hdmi and the dvi output is the same on most ati card we use the DVI and VGA output without any kind of converter.

Created attachment 583030 [details]
the dmesg with drm.debug=14

sorry it's a bug only on 6.2 and it seems to fixed in 6.3 beta:-)
so this bug can be closed.
thanks anyway.
now our only problem that nvidia still not working in 6.3 beta #714069 :-(((

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Ok closing as it seems fixed in 6.3, please reopen if 6.3 final is still broken but that shouldn't be the case.