Xorg crashed with SIGSEGV in xf86findOption() with evtouch device connected, alternate stacktrace

[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

See also Bug #657895

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: xserver-xorg-core 2:1.9.0-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.35-22.34-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
CrashCounter: 1
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: Wed Oct 13 21:09:48 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 -nr -verbose -auth /var/run/gdm/auth-for-gdm-FKXgPr/database -nolisten tcp vt7
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
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=0xbfa64824, 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)]

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e82fb]
1: /usr/bin/X (0x8048000+0x5da8d) [0x80a5a8d]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x7ea40c]
3: /usr/bin/X (xf86findOptionValue+0x24) [0x80cab64]
4: /usr/bin/X (0x8048000+0x6a5e2) [0x80b25e2]
5: /usr/bin/X (0x8048000+0x6b169) [0x80b3169]
6: /usr/bin/X (xf86OpenSerial+0x43) [0x816da43]
7: /usr/lib/xorg/modules/input/evtouch_drv.so (0xf30000+0x2413) [0xf32413]
8: /usr/bin/X (EnableDevice+0xc9) [0x80679c9]
9: /usr/bin/X (0x8048000+0x1fd5f) [0x8067d5f]
10: /usr/bin/X (0x8048000+0x1a577) [0x8062577]
11: /lib/libc.so.6 (__libc_start_main+0xe7) [0x394ce7]
12: /usr/bin/X (0x8048000+0x1a191) [0x8062191]
Segmentation fault at address 0x4d

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #657895, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.