Xorg crashed with SIGSEGV in xf86findOption() with evtouch device connected

[2GooD]

I have an LG L1510SF touch screen that worked great in Karmic, OK in Lucid but not at all in Maverick...

When the USB cable to the display is connected, Xorg crashes even when I boot in recovery mode and select "failsafe X".

The lsusb output for the device looks like this:

Bus 003 Device 002: ID 0403:f9e9 Future Technology Devices International, Ltd

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: xserver-xorg-core 2:1.9.0-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
DRM.card0.DVI.D.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
DRM.card0.VGA.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1024x768 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wAebXM7hToCAAcSAQNoHhd46rSloVhOlyYWUFS/7gAxT0VPYU8BAQEBAQEBAQEBZBkAQEEAJjAYiDYAMOQQAAAYAAAA/QA4Sx4/CAAKICAgICAgAAAA/ABMMTUxMFNGCiAgICAgAAAA/AAKICAgICAgICAgICAgAHE=
Date: Sun Oct 10 22:17:58 2010
ExecutablePath: /usr/bin/Xorg
MachineType: ASUSTeK Computer INC. B203
ProcCmdLine: root=UUID=6d986ae0-9cad-48b1-832f-5a4c5cce14e1 ro quiet splash
ProcCmdline: /usr/bin/X :0 -br -once -config /etc/X11/xorg.conf.failsafe -logfile /var/log/Xorg.failsafe.log
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0x80a23df <RemoveEnabledDevice+63>: and %esi,0x13aec(%ebx,%edx,4)
 PC (0x080a23df) ok
 source "%esi" ok
 destination "0x13aec(%ebx,%edx,4)" (0x08406ae0) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 xf86findOption (list=0x11, name=0x81df561 "Device") at ../../../../hw/xfree86/parser/Flags.c:320
 xf86findOptionValue (list=0x11, name=0x81df561 "Device") at ../../../../hw/xfree86/parser/Flags.c:337
 ParseOptionValue (scrnIndex=<value optimized out>, options=<value optimized out>, p=0xbfd04144, markUsed=1) at ../../../../hw/xfree86/common/xf86Option.c:506
 LookupStrOption (optlist=<value optimized out>, name=<value optimized out>, deflt=0x0, markUsed=1) at ../../../../hw/xfree86/common/xf86Option.c:209
 xf86OpenSerial (options=0x11) at ../../../../../hw/xfree86/os-support/linux/../shared/posix_tty.c:121
Title: Xorg crashed with SIGSEGV in xf86findOption()
UserGroups:

dmi.bios.date: 11/10/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0205
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: B203
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: Rev 1.xx
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0205:bd11/10/2008:svnASUSTeKComputerINC.:pnB203:pvrRev1.xx:rvnASUSTeKComputerINC.:rnB203:rvrRev1.xx:cvnASUSTekComputerINC.:ct3:cvrRev1.xx:
dmi.product.name: B203
dmi.product.version: Rev 1.xx
dmi.sys.vendor: ASUSTeK Computer INC.
system:
 distro: Ubuntu
 codename: maverick
 architecture: i686
 kernel: 2.6.35-22-generic

[2GooD (david+launchpad)]

See Bug #660986 for an alternate stacktrace.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e82fb]
1: /usr/bin/X (0x8048000+0x5da8d) [0x80a5a8d]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0xbf540c]
3: /usr/bin/X (FreeClientResources+0xed) [0x808f04d]
4: /usr/bin/X (FreeAllResources+0x60) [0x808f120]
5: /usr/bin/X (0x8048000+0x1a5e6) [0x80625e6]
6: /lib/libc.so.6 (__libc_start_main+0xe7) [0x4d1ce7]
7: /usr/bin/X (0x8048000+0x1a191) [0x8062191]
Segmentation fault at address 0x3

[Apport retracing service (apport)]

StacktraceTop:
 xf86findOption (list=0x11, name=0x81df561 "Device")
 xf86findOptionValue (list=0x11, name=0x81df561 "Device")
 ParseOptionValue (scrnIndex=<value optimized out>,
 LookupStrOption (optlist=<value optimized out>,
 xf86OpenSerial (options=0x11)

[Timo Aaltonen (tjaalton)]

Evtouch is going to be removed from the archive starting in natty, closing bugs that become obsolete due to that. Use the 'evdev' driver for touchscreens.