Re: XFree86 220.127.116.11 problems on Tangerine iMac DV
Well, the iMac is somewhat unusual, because for the 3 resolutions
supported, only one refresh rate is allowed. These refresh rates
are a bit higher than you find normally.
(**) R128(0): Mode "1024x768": 78.5 MHz, 59.8 kHz, 74.8 Hz
(II) R128(0): Modeline "1024x768" 78.50 1024 1033 1129 1312 768 769 772 800
(**) R128(0): Mode "800x600": 62.4 MHz, 60.0 kHz, 94.9 Hz
(II) R128(0): Modeline "800x600" 62.40 800 813 893 1040 600 601 604 632 +hsy
(**) R128(0): Mode "640x480": 49.9 MHz, 60.0 kHz, 116.7 Hz
(II) R128(0): Modeline "640x480" 49.90 640 653 717 832 480 481 484 514 +hsyn
That's 1024x768 ~75 Hz: pretty standard,
800x600 ~95 Hz: somewhat odd,
640x480 ~117 Hz: (!)
At any other refresh rate, the iMac monitor is completely blank.
I know that 1024x768 generally always worked, but that I needed
modelines for 800x600 and 640x480. Now that I look at my current
XF86Config-4, recent versions of debconf has taken out all the
modeline stuff. I guess UseFBDev teaches X about these modes?
On Wed, Jan 16, 2002 at 03:51:53PM +0100, Michel Dänzer wrote:
> On Wed, 2002-01-16 at 16:40, Ryan Shaw wrote:
> > I tried Modes "current" and it still didn't work.
> Bummer, what happened?
> > Fortunately I found Ryan Gordon's XF86Config-4 file,
> > which had mode lines he had found to work with the
> > iMac. Once I had manually set the mode lines,
> > everything worked beautifully. I didn't even know
> > you still could set the mode lines manually in
> > XF86 4, but I guess I was wrong.
> Of course one can still do that. :) But it's usually no longer necessary
> because the server has standard modes built in. I wonder what's so
> special about the modes those iMacs want?
> Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
> XFree86 and DRI project member / CS student, Free Software enthusiast
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