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Old 07-23-03, 09:00 PM   #1
eliu
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Unhappy TV-out 640x480 twinview clone problem

TV-out 640x480 twinview clone problem

I am using Mandrake 9.1 XFree86 4.3 at 1280x1024 mode.

I cannot switch to 640x480 by pressing control-alt-+.
TV-out works. I can see the output on the TV.

If I remove the TwinView options, then I can switch agian.

I could do it on Mankdrake 8.2 & 9.0 (XFree4.2.x)
I am using the 4393 driver. 3123 also has this problem.
It seems like a XFree86 4.3 bug.

Does anyone have a solution for this ?


See below for XFree86.0.log and XF86Config-4.

XFree86.0.log
XF86Config-4


Last edited by eliu; 07-24-03 at 06:07 AM.
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Old 07-24-03, 11:34 PM   #2
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I am trying to fix it my by modifying src of
XFree 4.3. I will do a diff between Xserver of
4.2.x and 4.3.

Any hints would be appreciated.
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Old 07-26-03, 11:17 PM   #3
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My program(fftv) now uses 'XF86VidModeSwitchToMode' to switch to 640x480 mode. It works. There is still a bug in XF86VidModeSwitchMode function in Xserver.

Last edited by eliu; 07-27-03 at 12:03 AM.
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Old 07-28-03, 09:38 AM   #4
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Here is a patch that fixes the problem.

--- xc/programs/Xserver/hw/xfree86/common/xf86Cursor.c 2003-02-13 18:49:38.000000000 +0800
+++ xc/programs/Xserver/hw/xfree86/common/xf86Cursor.c.new 2003-07-28 22:30:03.000000000 +0800
@@ -263,7 +263,7 @@
mode = mode->next;
else
mode = mode->prev;
- } while (mode != pScr->currentMode && !(mode->type & M_T_USERDEF));
+ } while (mode == pScr->currentMode && !(mode->type & M_T_USERDEF));

(void)xf86SwitchMode(pScreen, mode);
}
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