Comment 18 for bug 194760

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Andreas Heinlein (aheinlein) wrote : Re: EDID fail

I have a problem that may or may not be related. I have seen several cases where X autoconfig does not work correctly, i.e. you only get 640x480 and have to correct it with displayconfig-gtk. Some of these cases were related to complete edid failures as described, but I found at least one case where the ouput of 'sudo ddcprobe' looks good including edid data, but 'sudo get-edid | parse edid' returns nonsense, telling "The EDID data should not be trusted as the VBE call failed" and resolutions like 3840x2560. read-edid also complains that the monitor always claims there are 32 edid blocks left; the whole get-edid thing takes about 10-12s.
Monitor is a Belinea 106055 (CRT) with a 'real' maximum resolution of 1600x1200, refresh 30-96kHz, vrefresh 50-160Hz.
This is also one of the cases where the 'old' way from Feisty and Gutsy worked, whereas the 'hardy' way does not :-(