Public bug reported:
This is maybe a long shot, but I have a Dell XPS 13 2020 running Ubuntu
18.04. It was running fine for a while, but for some reason it recently
developed an issue where xorg crashes on login. I get as far as the
desktop, but then it locks up and mouse/keyboard stop responding.
I have verified this happens if I select the following login shells:
Ubuntu, Gnome Classic, xfce4. It does not happen under wayland, so I
have switched to that for now.
The segfault is as follows:
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE)
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Backtrace:
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 0:
/usr/lib/xorg/Xorg (xorg_backtrace+0x4d) [0x55e34e1bba9d]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 1:
/usr/lib/xorg/Xorg (0x55e34e003000+0x1bc839) [0x55e34e1bf839]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 2:
/lib/x86_64-linux-gnu/libpthread.so.0 (0x7f3e4ca86000+0x128a0) [0x7f3e4ca988a0]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 3:
/usr/lib/xorg/Xorg (DRI2CloseScreen+0x33) [0x55e34e18fc43]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 4:
/usr/lib/xorg/modules/drivers/modesetting_drv.so (0x7f3e49b5d000+0x7d48)
[0x7f3e49b64d48]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 5:
/usr/lib/xorg/Xorg (0x55e34e003000+0xc6407) [0x55e34e0c9407]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 6:
/usr/lib/xorg/Xorg (0x55e34e003000+0x137762) [0x55e34e13a762]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 7:
/usr/lib/xorg/Xorg (0x55e34e003000+0xe4bf0) [0x55e34e0e7bf0]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 8:
/usr/lib/xorg/Xorg (0x55e34e003000+0x57000) [0x55e34e05a000]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 9:
/lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0x7f3e4c6b6b97]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 10:
/usr/lib/xorg/Xorg (_start+0x2a) [0x55e34e043b8a]
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE)
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE)
Segmentation fault at address 0x90
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE)
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: Fatal server
error:
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Caught
signal 11 (Segmentation fault). Server aborting
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE)
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: Please consult
the The X.Org Foundation support
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: at
http://wiki.x.org
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: for help.
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Please
also check the log file at "/home//.local/share/xorg/Xorg.0.log" for
additional information.
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (EE)
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (WW)
xf86CloseConsole: KDSETMODE failed: Input/output error
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (WW)
xf86CloseConsole: VT_GETMODE failed: Input/output error
Sep 05 21:32:18 -xps /usr/lib/gdm3/gdm-x-session[1902]: (WW)
xf86CloseConsole: VT_ACTIVATE failed: Input/output error
I have attached the Xorg log file, if that is helpful. Are there any
steps I can take to debug?
Thanks.
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
** Tags: bionic xorg
** Attachment added: "The Xorg log from a crash"
https://bugs.launchpad.net/bugs/1894415/+attachment/5408029/+files/Xorg.log
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https://bugs.launchpad.net/bugs/1894415
Title:
XORG crashes with segfault on Ubuntu 1804 during login
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