[Bug 1662244] Re: lightdm causes all greeters to fail to start
Upgrading to (K)Ubuntu 18.04.5 LTS basically broke the system as X was not restarting correctly (black screen instead of lightdm display or even infinite loop of X crashes based on BIOS/EFI config). This is critical for non-savvy users as my parents. The issue is the same as can be seen in /var/log/lightdm/seat0-greeter.log with repeated messages like **MEMORY-ERROR***: unity-greeter[1647]: GSlice: failed to allocate 2040 bytes (alignment: 2048)... **MEMORY-ERROR***: unity-greeter[1647]: GSlice: failed to allocate 2040 bytes (alignment: 2048)... **MEMORY-ERROR***: unity-greeter[1647]: GSlice: failed to allocate 2040 bytes (alignment: 2048)... The workaround is indded updating the memlock limits as described above (adding the 2 lines of the above comment to /etc/security/limits.con). Thanks for the workaround :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Thanks Adding * soft memlock 262144 * hard memlock 262144 in /etc/security/limits.conf solved the same problem with lightdm and X not starting on Ubuntu 18.04 running on a motherboard with VIA KM400 integrated graphics. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
What torel proposed in https://bugs.launchpad.net/ubuntu/+source/unity- greeter/+bug/1662244/comments/14 avoids the segfault: * soft memlock 262144 * hard memlock 262144 Should all lightdm users manually put that in limits.conf, or should we expect some update? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Hi, a recent systemd update in 18.04 makes slick-greeter segfault. So all Ubuntu MATE 18.04 users now get black screens instead of lightdm. It's related to memory limits so I'm cross-referencing it here: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1830746 This didn't help: [LightDM] lock-memory=false Can I put something in /etc/security/limits.conf to see if it helps? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
(in lightdm.conf) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Does setting: [LightDM] lock-memory=false Workaroud this issue? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Seen on 18.04.1. WorkARound? * soft memlock 262144 * hard memlock 262144 # End of file -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
This is BTW almost exactly the same what 'hugepages' does -- *increasing* memlock limits to 262144 kB. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Please reopen. This just bit me on 17.10, using some manually configured soft and hard memlock limits in /etc/security/limits.conf: * softmemlock 262144 * hardmemlock 262144 As these limits *increase* max locked memory from 64 to 262144 kB, it took me quite some time (and a lucky google hit on this bug report) to locate this as the cause. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Sure enough removing the 'hugepages' package has solved the issue. ** Changed in: lightdm Status: New => Invalid ** Changed in: lightdm-gtk-greeter Status: New => Invalid ** Changed in: lightdm (Ubuntu) Status: New => Invalid ** Changed in: unity-greeter (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Well the ioctl() call isn't really an issue because stderr isn't hooked to a tty in the way that a greeter is started up so that's normal. The EAGAIN is interesting because I recently installed a package dealing with hugepages and it created some rules in /etc/security/limits.d -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Just prior to the SIGTRAP I see a mmap() fail with EAGAIN and a failing
ioctl() call. This is from the attached strace with the other noise
trimmed out.
4108 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_ST
ACK, -1, 0
4108 <... mmap resumed> ) = -1 EAGAIN (Resource temporarily unavai
lable)
4108 ioctl(2, TCGETS
4108 <... ioctl resumed> , 0x7ffcbb763220) = -1 ENOTTY (Inappropriate ioctl for
device)
4108 write(2, "\n(lightdm-gtk-greeter:4108): GLi"..., 125
4108 <... write resumed> ) = 125
4108 --- SIGTRAP {si_signo=SIGTRAP, si_code=SI_KERNEL} ---
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[Bug 1662244] Re: lightdm causes all greeters to fail to start
Unfortunately that didn't work. I went back to the versions that 16.10 originally shipped with and its still broken. I'm guessing some data file that gets generated got corrupted and its causing this but I'm unable to find it. I've taken an strace of lightdm-gtk-greeter showing the failure to help track this down ** Attachment added: "lightdm-gtk-greeter.strace" https://bugs.launchpad.net/lightdm/+bug/1662244/+attachment/4822818/+files/lightdm-gtk-greeter.strace ** Also affects: lightdm-gtk-greeter Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
The lightdm.log is very repetitive so I just snipped out the last run since they all appear to be identical. ** Attachment added: "snippet from lightdm.log" https://bugs.launchpad.net/lightdm/+bug/1662244/+attachment/4816174/+files/lightdm.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Thanks for the response Robert. I'll give both a shot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
Does the lightdm.log say anything useful? The stack trace looks like an out of memory condition, which could be either liblightdm or GTK+ failing to work? I'd suggest trying different versions of those libraries. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1662244] Re: lightdm causes all greeters to fail to start
I've tried lightdm-gtk-greeter and kylin-greeter and the same crash occurs. So I'm back to thinking this issue is with lightdm. Some data or configuration its passing to the greeter is causing it to fail. I've removed all the dot directories (.cache, .config, .dbus, .gconf, and .local) inside of /var/lib/lightdm and still am experiencing this. ** Summary changed: - unity-greeter crashes causing lightdm to fail to start + lightdm causes all greeters to fail to start ** Also affects: lightdm (Ubuntu) Importance: Undecided Status: New ** Also affects: lightdm Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: lightdm causes all greeters to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
