On Fri, 5 Jul 2002, Meelis Roos wrote:
> I have compiled latest XFree CVS snapshot (as of today, 4.2.99.1) on a Sun
> Blade 100 (sparc64) running Linux 2.4.19-rc1 (Debian 3.0). 32-bit
> userspace. X compiles (with a couple of tricks, __udivdi3 etc, will submit
> a patch after I have overlooked it) and installs. But starting X makes the
> screen go blank, then the monitor displays 'Invalid sync freq.'. Switching
> back to text console brings the picture back & I can stop X.
> The card is onboard ATI Rage XL. X is configured for it, config taken from
> working XFree 4.1 and slightly modified.
> TThe main suspect differences between working (4.1.0-17 Debian package)
> and nonworking XFree logs:
> +(II) ATI(0): Engine XCLK 48.462 MHz; Refresh rate code 7.
> (--) ATI(0): Internal programmable clock generator detected.
> -(--) ATI(0): Reference clock 315/11 (28.636) MHz.
> +(--) ATI(0): Reference clock 157.5/11 (14.318) MHz.
> (II) ATI(0): Generic Monitor: Using hsync range of 30.00-69.00 kHz
> (II) ATI(0): Generic Monitor: Using vrefresh range of 50.00-100.00 Hz
> -(II) ATI(0): Maximum clock: 193.00 MHz
> -(II) ATI(0): Not using default mode "1280x960" (hsync out of range)
> -(II) ATI(0): Not using default mode "1280x1024" (hsync out of range)
> -(II) ATI(0): Not using default mode "1280x1024" (hsync out of range)
> -(II) ATI(0): Not using default mode "1600x1200" (hsync out of range)
> -(II) ATI(0): Not using default mode "1600x1200" (hsync out of range)
> -(II) ATI(0): Not using default mode "1600x1200" (hsync out of range)
> +(II) ATI(0): Maximum clock: 96.00 MHz
> I suspect the half frequency clock to be the main culprit. What can I do
> to check it and how can I work around / fix it?
> Relevant info from XF86Config-4:
> Section "Device"
> Identifier "Generic Video Card"
> Driver "ati"
> EndSection
To this "Device" section, add
Option "ReferenceClock" "28.686MHz"
I can't remember off-hand whether or not the quotes are required on the
value.
Also, 29.5 MHz is likely a more accurate value for the XL.
Marc.
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| Marc Aurele La France | work: 1-780-492-9310 |
| Computing and Network Services | fax: 1-780-492-1729 |
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| University of Alberta +-----------------------------------+
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XFree86 Core Team member. ATI driver and X server internals.
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