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 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Backtrace: Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4d) [0x55e34e1bba9d] Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 1: /usr/lib/xorg/Xorg (0x55e34e003000+0x1bc839) [0x55e34e1bf839] Sep 05 21:32:18 <removed>-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 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 3: /usr/lib/xorg/Xorg (DRI2CloseScreen+0x33) [0x55e34e18fc43] Sep 05 21:32:18 <removed>-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 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 5: /usr/lib/xorg/Xorg (0x55e34e003000+0xc6407) [0x55e34e0c9407] Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 6: /usr/lib/xorg/Xorg (0x55e34e003000+0x137762) [0x55e34e13a762] Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 7: /usr/lib/xorg/Xorg (0x55e34e003000+0xe4bf0) [0x55e34e0e7bf0] Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 8: /usr/lib/xorg/Xorg (0x55e34e003000+0x57000) [0x55e34e05a000] Sep 05 21:32:18 <removed>-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 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) 10: /usr/lib/xorg/Xorg (_start+0x2a) [0x55e34e043b8a] Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Segmentation fault at address 0x90 Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: Fatal server error: Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Caught signal 11 (Segmentation fault). Server aborting Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: Please consult the The X.Org Foundation support Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: at http://wiki.x.org Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: for help. Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Please also check the log file at "/home/<removed>/.local/share/xorg/Xorg.0.log" for additional information. Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (EE) Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (WW) xf86CloseConsole: KDSETMODE failed: Input/output error Sep 05 21:32:18 <removed>-xps /usr/lib/gdm3/gdm-x-session[1902]: (WW) xf86CloseConsole: VT_GETMODE failed: Input/output error Sep 05 21:32:18 <removed>-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 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1894415 Title: XORG crashes with segfault on Ubuntu 1804 during login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1894415/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
