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modes: Beware the driver switching root pixmaps 

Program received signal SIGSEGV, Segmentation fault.
0x080d4a2d in xf86RandR12ScreenSetSize (pScreen=0x8dca3a0, width=800,
    height=600, mmWidth=210, mmHeight=157)
    at ../../../../hw/xfree86/modes/xf86RandR12.c:731
731     ../../../../hw/xfree86/modes/xf86RandR12.c: No such file or directory.
        in ../../../../hw/xfree86/modes/xf86RandR12.c
(gdb) bt full
    height=600, mmWidth=210, mmHeight=157)
    at ../../../../hw/xfree86/modes/xf86RandR12.c:731
        randrp = 0x8dcae68
        pScrn = 0x8dbeb28
        config = <value optimized out>
        pRoot = 0x8e08e30
        pScrnPix = 0xb6d12008
        ret = 1
        c = <value optimized out>
    mmWidth=210, mmHeight=157) at ../../randr/rrscreen.c:185
No locals.
    at ../../randr/rrscreen.c:307
        pWin = 0x8e08e30
        pScreen = 0x8dca3a0
        i = <value optimized out>
        rc = 0
../../randr/randr.c:485

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Julien Cristau <jcristau@debian.org>
Tested-by: Julien Cristau <jcristau@debian.org>
Cc: Keith Packard <keithp@keithp.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Chris Wilson 2010-09-27 17:30:13 +01:00 committed by Keith Packard
parent 2f0abd7d69
commit fdabcec57a
1 changed files with 2 additions and 1 deletions
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3
hw/xfree86/modes/xf86RandR12.c
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@ -677,7 +677,7 @@ xf86RandR12ScreenSetSize (ScreenPtr pScreen,
ScrnInfoPtr pScrn = XF86SCRNINFO(pScreen);
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
WindowPtr pRoot = pScreen->root;
PixmapPtr pScrnPix = (*pScreen->GetScreenPixmap)(pScreen);
PixmapPtr pScrnPix;
Bool ret = FALSE;
int c;
@ -714,6 +714,7 @@ xf86RandR12ScreenSetSize (ScreenPtr pScreen,
}
}
pScrnPix = (*pScreen->GetScreenPixmap)(pScreen);
pScreen->width = pScrnPix->drawable.width = width;
pScreen->height = pScrnPix->drawable.height = height;
randrp->mmWidth = pScreen->mmWidth = mmWidth;