I have the apple dvi-i to s-video adapter connecting mbp 3.1 to an old crt tv. The picture is scrambled and black & white.
With system prefs open and windows gathered the tv shows up as a generic vga monitor and there is no option to pick between NTSC and PAL for that screen. I have reset pram, booted in safe mode but nothing changes.
I have tested this tv with a windows pc running xp (without the adaptor) which allows access to the driver and the changing of the refresh rate and yes it works flawlesslyish!.
This setup has worked for me previously in leopard days. Similar problems seemed to associated with the release of snow leopard and was later resolved by the release of 10.6.3. Alas not so for me (on 10.6.5).
Are there any other remedial steps I could take?
Its all PAL (tv and adaptor). Its just that I can't get to choose a refresh rate lower than 60 hz on he system prefs. I've tried it on other tvs/monitors and the same thing.
Regards Pat
Thanks for your help
I agree that this is what I should expect if it were the wrong adaptor.
It is definitely PAL. it says so on it.
It worked before with this tv but usually needed a reboot to get proper colors etc.
Here is what the edid file in switchresx says (no hints that I recognise here)
DDC block report generated by SwitchResX version 4.1.8 for display
VGA/SVGA Display
Hmm. Yeah, I don't see anything there linking that adapter to PAL or NTSC. Below is the EDID from my U.S. version of that adapter. It always comes up in NTSC timing first, but does allow for PAL (50Hz) selections.
Are you sure yours is an Apple adapter? Usually the name section of the EDID would have APP.
DDC block generated by SwitchRes X for display
NTSC/PAL (2)
Hello again, yep I bought it from the online apple store here in Ireland. Where your readout refers to the manufacturer as APP I get @@@. Mine seems to refer to the monitor whereas yours appears to refer to the adapter. Its as if some internal driver/firmware has got fried.
Yeah, and yours shows no manufacturer's reserved timings. Those timings refer to one's built into EFI. But your adapter doesn't reference them. You might want to take it up with Apple and say you got a defective one. It looks that way to me.
Thank you very much BSteely, maybe a warranty enquiry is in order! Good to be able to see other peoples results remotely. My only other concern is that my nvidia cursed 8600 graphics card might be involved. It has been replaced twice already. It plays well with other monitors using different connectors so maybe not.