Program received signal SIGUSR1, User defined signal 1.
[Switching to Thread 0xb7b816b0 (LWP 6050)]
0xb8037424 in __kernel_vsyscall ()
(gdb) backtrace full
#0  0xb8037424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7ce8019 in ioctl () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0x080c304d in xf86ProcessActionEvent (action=ACTION_SWITCHSCREEN, 
    arg=0xbfa52550) at ../../../../hw/xfree86/common/xf86Events.c:353
No locals.
#3  0x081b889b in XkbDDXSwitchScreen (dev=0x8fb9048, key=67 'C', act=0x5606)
    at ../../../../hw/xfree86/dixmods/xkbVT.c:55
	scrnnum = 1
#4  0x081a0fbe in _XkbFilterSwitchScreen (xkbi=0x8fb9180, filter=0x9eeac90, 
    keycode=67, pAction=0xbfa52658) at ../../xkb/xkbActions.c:989
	dev = (DeviceIntPtr) 0x8fb9048
#5  0x081a2588 in XkbHandleActions (dev=0x8fb9048, kbd=0x8fb9048, 
    xE=0x81f1fe0, count=1) at ../../xkb/xkbActions.c:1226
	key = 67
	bit = <value optimized out>
	realMods = <value optimized out>
	xkbi = (XkbSrvInfoPtr) 0x8fb9180
	keyc = (KeyClassPtr) 0x8fbd288
	sendEvent = 1
	genStateNotify = 1
	oldState = {group = 0 '\0', locked_group = 0 '\0', base_group = 0,
  latched_group = 0, mods = 12 '\f', base_mods = 12 '\f', 
  latched_mods = 0 '\0', locked_mods = 0 '\0', compat_state = 12 '\f', 
  grab_mods = 12 '\f', compat_grab_mods = 12 '\f', lookup_mods = 12 '\f', 
  compat_lookup_mods = 12 '\f', ptr_buttons = 0}
	act = {any = {type = 13 '\r', data = "\005\001\000\000\000\000"}, 
  mods = {type = 13 '\r', flags = 5 '\005', mask = 1 '\001', 
    real_mods = 0 '\0', vmods1 = 0 '\0', vmods2 = 0 '\0'}, group = {
    type = 13 '\r', flags = 5 '\005', group_XXX = 1 '\001'}, iso = {
    type = 13 '\r', flags = 5 '\005', mask = 1 '\001', real_mods = 0 '\0', 
    group_XXX = 0 '\0', affect = 0 '\0', vmods1 = 0 '\0', vmods2 = 0 '\0'}, 
  ptr = {type = 13 '\r', flags = 5 '\005', high_XXX = 1 '\001', 
    low_XXX = 0 '\0', high_YYY = 0 '\0', low_YYY = 0 '\0'}, btn = {
    type = 13 '\r', flags = 5 '\005', count = 1 '\001', button = 0 '\0'}, 
  dflt = {type = 13 '\r', flags = 5 '\005', affect = 1 '\001', 
    valueXXX = 0 '\0'}, screen = {type = 13 '\r', flags = 5 '\005', 
    screenXXX = 1 '\001'}, ctrls = {type = 13 '\r', flags = 5 '\005', 
    ctrls3 = 1 '\001', ctrls2 = 0 '\0', ctrls1 = 0 '\0', ctrls0 = 0 '\0'}, 
  msg = {type = 13 '\r', flags = 5 '\005', message = "\001\000\000\000\000"}, 
  redirect = {type = 13 '\r', new_key = 5 '\005', mods_mask = 1 '\001', 
    mods = 0 '\0', vmods_mask0 = 0 '\0', vmods_mask1 = 0 '\0', 
    vmods0 = 0 '\0', vmods1 = 0 '\0'}, devbtn = {type = 13 '\r', 
    flags = 5 '\005', count = 1 '\001', button = 0 '\0', device = 0 '\0'}, 
  devval = {type = 13 '\r', device = 5 '\005', v1_what = 1 '\001', 
 v1_ndx = 0 '\0', v1_value = 0 '\0', v2_what = 0 '\0', v2_ndx = 0 '\0', 
    v2_value = 0 '\0'}, type = 13 '\r'}
	filter = (XkbFilterPtr) 0x0
	keyEvent = 1
	backupproc = <value optimized out>
#6  0x081a2943 in XkbProcessKeyboardEvent (xE=0x81f1fe0, keybd=0x8fb9048, 
    count=1) at ../../xkb/xkbPrKeyEv.c:187
	keyc = (KeyClassPtr) 0x8fbd288
	xkbi = (XkbSrvInfoPtr) 0x4f
	key = 67
	ndx = <value optimized out>
	xiEvent = 64
#7  0x0819a940 in AccessXFilterPressEvent (xE=0x81f1fe0, keybd=0x8fb9048, 
    count=1) at ../../xkb/xkbAccessX.c:566
	xkbi = (XkbSrvInfoPtr) 0x8fb9180
	ctrls = (XkbControlsPtr) 0x8fbc1d8
	ignoreKeyEvent = 0
	key = 67 'C'
#8  0x081a2f0e in ProcessKeyboardEvent (xE=0x81f1fe0, keybd=0x8fb9048, count=1)
    at ../../xkb/xkbPrKeyEv.c:223
	keyc = (KeyClassPtr) 0x8fbd288
	xkbi = <value optimized out>
	backup_proc = <value optimized out>
	is_press = 1
	is_release = <value optimized out>
#9  0x0810f8f2 in mieqProcessInputEvents () at ../../mi/mieq.c:252
	e = (EventRec *) 0x81f1fe0
	dev = (DeviceIntPtr) 0x8fb9048
#10 0x080c330c in ProcessInputEvents ()
    at ../../../../hw/xfree86/common/xf86Events.c:241
	x = -1079695408
	y = 816000
#11 0x0808c08e in Dispatch () at ../../dix/dispatch.c:371
	result = 0
	client = (ClientPtr) 0x8fc4a00
	nready = -1
	start_tick = 8300
#12 0x080719ad in main (argc=10, argv=0xbfa52934, envp=Cannot access memory at address 0x560e
)
    at ../../dix/main.c:441
	i = <value optimized out>
	error = 136138740
	xauthfile = <value optimized out>
	alwaysCheckForInput = {0, 1}