Hi, I have the same error on a Thinpad W510.
# fprint_demo ** Message: now monitoring fd 11 This is the only thing printed until one tries to register a finger. Then nothing happens (and the green on the fingerprint readers does not turn on). Canceling the enrollment crashes the application with: *** glibc detected *** fprint_demo: munmap_chunk(): invalid pointer: 0x000000000224c1a0 *** ======= Backtrace: ========= /lib/libc.so.6(+0x71b16)[0x7f3b4fc28b16] /usr/lib/libfprint.so.0(+0xabfb)[0x7f3b52c68bfb] /usr/lib/libfprint.so.0(+0xac3d)[0x7f3b52c68c3d] /usr/lib/libfprint.so.0(+0x7571)[0x7f3b52c65571] /usr/lib/libfprint.so.0(+0x766c)[0x7f3b52c6566c] /usr/lib/libfprint.so.0(fp_async_enroll_stop+0x3a)[0x7f3b52c62b7a] fprint_demo[0x405b81] /usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x15e)[0x7f3b50a2c47e] /usr/lib/libgobject-2.0.so.0(+0x233f7)[0x7f3b50a423f7] /usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7e6)[0x7f3b50a43a76] /usr/lib/libgobject-2.0.so.0(g_signal_emit+0x83)[0x7f3b50a43fc3] /usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x15e)[0x7f3b50a2c47e] /usr/lib/libgobject-2.0.so.0(+0x233f7)[0x7f3b50a423f7] /usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7e6)[0x7f3b50a43a76] /usr/lib/libgobject-2.0.so.0(g_signal_emit+0x83)[0x7f3b50a43fc3] /usr/lib/libgtk-x11-2.0.so.0(+0x96235)[0x7f3b526d4235] /usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x15e)[0x7f3b50a2c47e] /usr/lib/libgobject-2.0.so.0(+0x22cc1)[0x7f3b50a41cc1] /usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7e6)[0x7f3b50a43a76] /usr/lib/libgobject-2.0.so.0(g_signal_emit+0x83)[0x7f3b50a43fc3] /usr/lib/libgtk-x11-2.0.so.0(+0x94f3d)[0x7f3b526d2f3d] /usr/lib/libgtk-x11-2.0.so.0(+0x141c08)[0x7f3b5277fc08] /usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x15e)[0x7f3b50a2c47e] /usr/lib/libgobject-2.0.so.0(+0x23040)[0x7f3b50a42040] /usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x62d)[0x7f3b50a438bd] /usr/lib/libgobject-2.0.so.0(g_signal_emit+0x83)[0x7f3b50a43fc3] /usr/lib/libgtk-x11-2.0.so.0(+0x257f6f)[0x7f3b52895f6f] /usr/lib/libgtk-x11-2.0.so.0(gtk_propagate_event+0xc3)[0x7f3b527780f3] /usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x2eb)[0x7f3b527791ab] /usr/lib/libgdk-x11-2.0.so.0(+0x5c3bc)[0x7f3b523ed3bc] /lib/libglib-2.0.so.0(g_main_context_dispatch+0x1f2)[0x7f3b501726c2] /lib/libglib-2.0.so.0(+0x42538)[0x7f3b50176538] /lib/libglib-2.0.so.0(g_main_loop_run+0x195)[0x7f3b50176a45] /usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xa7)[0x7f3b52779647] fprint_demo[0x405030] /lib/libc.so.6(__libc_start_main+0xfd)[0x7f3b4fbd5c4d] fprint_demo[0x403fd9] ======= Memory map: ======== 00400000-0040a000 r-xp 00000000 08:03 3190306 /usr/bin/fprint_demo 0060a000-0060b000 rw-p 0000a000 08:03 3190306 /usr/bin/fprint_demo 021c6000-02397000 rw-p 00000000 00:00 0 [heap] 7f3b4677a000-7f3b46790000 r-xp 00000000 08:03 3028755 /lib/libgcc_s.so.1 7f3b46790000-7f3b4698f000 ---p 00016000 08:03 3028755 /lib/libgcc_s.so.1 7f3b4698f000-7f3b46990000 rw-p 00015000 08:03 3028755 /lib/libgcc_s.so.1 7f3b469aa000-7f3b46a0a000 rw-s 00000000 00:04 1507339 /SYSV00000000 (deleted) 7f3b46a0a000-7f3b46a6a000 rw-s 00000000 00:04 1474570 /SYSV00000000 (deleted) 7f3b46a6a000-7f3b46a85000 r--s 00000000 08:03 3219272 /usr/share/mime/mime.cache 7f3b46a85000-7f3b46a94000 r--p 00000000 08:03 2708698 /usr/share/fonts/truetype/mathematica/VeraBd.ttf 7f3b46a94000-7f3b46aa5000 r--p 00000000 08:03 2708707 /usr/share/fonts/truetype/mathematica/Vera.ttf 7f3b46aa5000-7f3b46aa7000 r-xp 00000000 08:03 3219061 /usr/lib/pango/1.6.0/modules/pango-basic-fc.so 7f3b46aa7000-7f3b46ca6000 ---p 00002000 08:03 3219061 /usr/lib/pango/1.6.0/modules/pango-basic-fc.so 7f3b46ca6000-7f3b46ca7000 rw-p 00001000 08:03 3219061 /usr/lib/pango/1.6.0/modules/pango-basic-fc.so 7f3b46ca7000-7f3b46ca8000 r--s 00000000 08:06 217306 /var/cache/fontconfig/c05880de57d1f5e948fdfacc138775d9-le64.cache-3 7f3b46ca8000-7f3b46cb9000 r--s 00000000 08:06 112792 /var/cache/fontconfig/99323171c53ab78df6914f910138fdd6-le64.cache-3 7f3b46cb9000-7f3b46ce7000 r--s 00000000 08:06 217298 /var/cache/fontconfig/365b55f210c0a22e9a19e35191240f32-le64.cache-3 7f3b46ce7000-7f3b49c4d000 r--p 00000000 08:03 3235396 /usr/share/icons/gnome/icon-theme.cache 7f3b49c4d000-7f3b4a127000 r--p 00000000 08:03 3226017 /usr/share/icons/hicolor/icon-theme.cache 7f3b4a127000-7f3b4a132000 r-xp 00000000 08:03 3028933 /lib/libnss_files-2.11.1.so 7f3b4a132000-7f3b4a331000 ---p 0000b000 08:03 3028933 /lib/libnss_files-2.11.1.so 7f3b4a331000-7f3b4a332000 r--p 0000a000 08:03 3028933 /lib/libnss_files-2.11.1.so 7f3b4a332000-7f3b4a333000 rw-p 0000b000 08:03 3028933 /lib/libnss_files-2.11.1.so 7f3b4a333000-7f3b4a33d000 r-xp 00000000 08:03 3028917 /lib/libnss_nis-2.11.1.so 7f3b4a33d000-7f3b4a53c000 ---p 0000a000 08:03 3028917 /lib/libnss_nis-2.11.1.so 7f3b4a53c000-7f3b4a53d000 r--p 00009000 08:03 3028917 /lib/libnss_nis-2.11.1.so 7f3b4a53d000-7f3b4a53e000 rw-p 0000a000 08:03 3028917 /lib/libnss_nis-2.11.1.so 7f3b4a53e000-7f3b4a553000 r-xp 00000000 08:03 3028919 /lib/libnsl-2.11.1.so 7f3b4a553000-7f3b4a752000 ---p 00015000 08:03 3028919 /lib/libnsl-2.11.1.so 7f3b4a752000-7f3b4a753000 r--p 00014000 08:03 3028919 /lib/libnsl-2.11.1.so 7f3b4a753000-7f3b4a754000 rw-p 00015000 08:03 3028919 /lib/libnsl-2.11.1.so 7f3b4a754000-7f3b4a756000 rw-p 00000000 00:00 0 7f3b4a756000-7f3b4a75d000 r-xp 00000000 08:03 3028914 /lib/libnss_compat-2.11.1.so 7f3b4a75d000-7f3b4a95c000 ---p 00007000 08:03 3028914 /lib/libnss_compat-2.11.1.so 7f3b4a95c000-7f3b4a95d000 r--p 00006000 08:03 3028914 /lib/libnss_compat-2.11.1.so 7f3b4a95d000-7f3b4a95e000 rw-p 00007000 08:03 3028914 /lib/libnss_compat-2.11.1.so 7f3b4a95e000-7f3b4a961000 r-xp 00000000 08:03 3028816 /lib/libuuid.so.1.3.0 7f3b4a961000-7f3b4ab61000 ---p 00003000 08:03 3028816 /lib/libuuid.so.1.3.0 7f3b4ab61000-7f3b4ab62000 rw-p 00003000 08:03 3028816 /lib/libuuid.so.1.3.0 7f3b4ab62000-7f3b4ab67000 r-xp 00000000 08:03 3189977 /usr/lib/libXdmcp.so.6.0.0 7f3b4ab67000-7f3b4ad66000 ---p 00005000 08:03 3189977 /usr/lib/libXdmcp.so.6.0.0 7f3b4ad66000-7f3b4ad67000 rw-p 00004000 08:03 3189977 /usr/lib/libXdmcp.so.6.0.0Aborted -- To UNSUBSCRIBE, email to [email 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