[Desktop-packages] [Bug 864010] Re: lightdm segfault in libglib after xorg segfault
I have been experiencing the same kind of crashes with my Kubuntu Oneiric installs. I am using kdm instead of lightdm, but the crash seems very much alike. I will attach a kdm.log. Please let me know if there is anything I can do to help! ** Attachment added: "kdm.log" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/864010/+attachment/2607296/+files/kdm.log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/864010 Title: lightdm segfault in libglib after xorg segfault Status in “lightdm” package in Ubuntu: Incomplete Status in “xorg-server” package in Ubuntu: Incomplete Bug description: After typing my password into the new greeter I was given a black screen with just the pointer at midcentre; which wouldn't move. dmesg shows: [ 274.801957] show_signal_msg: 21 callbacks suppressed [ 274.801966] lightdm[1025]: segfault at 022be720 ip 7fee2a0822de sp 7fee27966af0 error 4 in libglib-2.0.so.0.3000.0[7fee29ffd000+f4000] [ 274.803046] init: lightdm main process (956) killed by SEGV signal [ 275.034456] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id There is no X server running, looking at /var/log/Xorg.0.log it ends with: [ 288.858] (II) intel(0): EDID vendor "SEC", prod id 13875 [ 288.858] (II) intel(0): Printing DDC gathered Modelines: [ 288.858] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz) so doesn't look like it seg'd. There is no /var/crash entry (even though apport is enabled) I did notice (after a successful restart of lightdm and login - so maybe this is the next instance): /var/log/lightdm/x-0.log had: *** glibc detected *** /usr/bin/X: double free or corruption (!prev): 0x01c3e750 *** === Backtrace: = /lib/x86_64-linux-gnu/libc.so.6(+0x78a96)[0x7fda6de28a96] /lib/x86_64-linux-gnu/libc.so.6(cfree+0x6c)[0x7fda6de2cd7c] /usr/lib/xorg/modules/drivers/intel_drv.so(+0x24502)[0x7fda6bff9502] /usr/bin/X(FreeResource+0x124)[0x44e384] /usr/bin/X[0x42b6ae] /usr/bin/X[0x42fb89] /usr/bin/X[0x4232fe] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7fda6ddd130d] /usr/bin/X[0x4235ed] === Memory map: 0040-005d4000 r-xp 08:01 2329796 /usr/bin/Xorg 007d3000-007d6000 r--p 001d3000 08:01 2329796 /usr/bin/Xorg 007d6000-007e6000 rw-p 001d6000 08:01 2329796 /usr/bin/Xorg 007e6000-007f4000 rw-p 00:00 0 0176e000-01c5a000 rw-p 00:00 0 [heap] 7fda6000-7fda60021000 rw-p 00:00 0 7fda60021000-7fda6400 ---p 00:00 0 7fda6619e000-7fda6699e000 rw-s 104691000 00:05 5660 /dev/dri/card0 7fda6699e000-7fda6719e000 rw-s 103e91000 00:05 5660 /dev/dri/card0 7fda6719e000-7fda6799e000 rw-s 103691000 00:05 5660 /dev/dri/card0 7fda6799e000-7fda679aa000 r-xp 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda679aa000-7fda67ba9000 ---p c000 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda67ba9000-7fda67baa000 r--p b000 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda67baa000-7fda67bab000 rw-p c000 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda67bab000-7fda67bb5000 r-xp 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67bb5000-7fda67db5000 ---p a000 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67db5000-7fda67db6000 r--p a000 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67db6000-7fda67db7000 rw-p b000 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67db7000-7fda67dce000 r-xp 08:01 932937 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fda67dce000-7fda67fcd000 ---p 00017000 08:01 932937 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fda67fcd000-7fda67fce000 r--p 00016000 08:01 932937 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fda67fce000-7fda67fcf000 rw-p 00017000 08:01 932937 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fda67fcf000-7fda67fd1000 rw-p 00:00 0 7fda67fd1000-7fda67fd9000 r-xp 08:01 932938 /lib/x86_64-linux-gnu/libnss_compat-2.13.so 7fda67fd9000-7fda681d8000 ---p 8000 08:01 932938 /lib/x86_64-linux-gnu/libnss_compat-2.13.so 7fda681d8000-7fda681d9000 r--p 7000 08:01 932938 /lib/x86_64-linux-gnu/libnss_compat-2.13.so 7fda681d9000-7fda681da000 rw-p 8000 08:01 932938
[Desktop-packages] [Bug 864010] Re: lightdm segfault in libglib after xorg segfault
Some more information. I can reproduce the crash always in the following way: 1) Boot the machine. 2) Log in to KDE. Everything works, including 3d effects. 3) Log out of KDE. KDM starts. 4) Log back in -> X crashes, KDM restarts immediately. 5) Log in again -> KDE disables 3d effects and allows logging in. Sometimes if I try to enable effects after 5), I can crash X again. But that does not happen every time. It also might be relevant that I can reproduce the crash on both my desktop machine and my laptop, both of which are running Oneiric and both of which have Intel integrated graphics. I have not seen similar behavior with my work desktop, which has discrete nVidia graphics. uname -a: Linux desktop 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:27:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux lspci graphics information: 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12) Intel X driver version: 2:2.15.901-1ubuntu2.1 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/864010 Title: lightdm segfault in libglib after xorg segfault Status in “lightdm” package in Ubuntu: Incomplete Status in “xorg-server” package in Ubuntu: Incomplete Bug description: After typing my password into the new greeter I was given a black screen with just the pointer at midcentre; which wouldn't move. dmesg shows: [ 274.801957] show_signal_msg: 21 callbacks suppressed [ 274.801966] lightdm[1025]: segfault at 022be720 ip 7fee2a0822de sp 7fee27966af0 error 4 in libglib-2.0.so.0.3000.0[7fee29ffd000+f4000] [ 274.803046] init: lightdm main process (956) killed by SEGV signal [ 275.034456] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id There is no X server running, looking at /var/log/Xorg.0.log it ends with: [ 288.858] (II) intel(0): EDID vendor "SEC", prod id 13875 [ 288.858] (II) intel(0): Printing DDC gathered Modelines: [ 288.858] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz) so doesn't look like it seg'd. There is no /var/crash entry (even though apport is enabled) I did notice (after a successful restart of lightdm and login - so maybe this is the next instance): /var/log/lightdm/x-0.log had: *** glibc detected *** /usr/bin/X: double free or corruption (!prev): 0x01c3e750 *** === Backtrace: = /lib/x86_64-linux-gnu/libc.so.6(+0x78a96)[0x7fda6de28a96] /lib/x86_64-linux-gnu/libc.so.6(cfree+0x6c)[0x7fda6de2cd7c] /usr/lib/xorg/modules/drivers/intel_drv.so(+0x24502)[0x7fda6bff9502] /usr/bin/X(FreeResource+0x124)[0x44e384] /usr/bin/X[0x42b6ae] /usr/bin/X[0x42fb89] /usr/bin/X[0x4232fe] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7fda6ddd130d] /usr/bin/X[0x4235ed] === Memory map: 0040-005d4000 r-xp 08:01 2329796 /usr/bin/Xorg 007d3000-007d6000 r--p 001d3000 08:01 2329796 /usr/bin/Xorg 007d6000-007e6000 rw-p 001d6000 08:01 2329796 /usr/bin/Xorg 007e6000-007f4000 rw-p 00:00 0 0176e000-01c5a000 rw-p 00:00 0 [heap] 7fda6000-7fda60021000 rw-p 00:00 0 7fda60021000-7fda6400 ---p 00:00 0 7fda6619e000-7fda6699e000 rw-s 104691000 00:05 5660 /dev/dri/card0 7fda6699e000-7fda6719e000 rw-s 103e91000 00:05 5660 /dev/dri/card0 7fda6719e000-7fda6799e000 rw-s 103691000 00:05 5660 /dev/dri/card0 7fda6799e000-7fda679aa000 r-xp 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda679aa000-7fda67ba9000 ---p c000 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda67ba9000-7fda67baa000 r--p b000 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda67baa000-7fda67bab000 rw-p c000 08:01 932940 /lib/x86_64-linux-gnu/libnss_files-2.13.so 7fda67bab000-7fda67bb5000 r-xp 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67bb5000-7fda67db5000 ---p a000 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67db5000-7fda67db6000 r--p a000 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67db6000-7fda67db7000 rw-p b000 08:01 932942 /lib/x86_64-linux-gnu/libnss_nis-2.13.so 7fda67db7000-7fda67dce000 r-xp 08:01 932937 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fda67dce000-7fda67fcd000 ---p 00017000 08:01 932937 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fda67fcd000-7fda67fce000 r--p 00016000 08:01 932937
