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#1 2017-08-31 12:20:44

Endless Love
Member
Registered: 2017-08-31
Posts: 15

[SOLVED] Unexpectedly logout

Hello everyone,
I've had a problem for two days. My Arch Linux logout unexpectedly (it brings me back to the black screen before the display manager starts), after 2-3 seconds, LXDM starts and let me login.
My Desktop environment is XFCE4 and Display manager is LXDM.

Here is the output of dmesg:  https://pastebin.com/Aaqw2fJk
Here is the contents of  Xorg.0.log: https://pastebin.com/UfJJF0cU , and  Xorg.0.log.old: https://pastebin.com/4cYntEhX
Here is the output of  journalctl -b 0: https://pastebin.com/vgc8u6Vz

I've done a google search and found this thread: https://bbs.archlinux.org/viewtopic.php?id=224959, but the OP doesn't reply anymore so I create this one.

Thanks for your help.

Last edited by Endless Love (2017-09-02 14:14:07)

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#2 2017-08-31 12:34:32

loqs
Member
Registered: 2014-03-06
Posts: 19,113

Re: [SOLVED] Unexpectedly logout

Aug 31 15:32:33 archlinux kernel: microcode: sig=0x20655, pf=0x10, revision=0x4
Aug 31 15:32:33 archlinux kernel: microcode: Microcode Update Driver: v2.2.

You do not appear to have enabled microcode updates

Aug 31 15:34:20 archlinux kernel: traps: light-locker[933] trap int3 ip:7f0f83c00411 sp:7fffe3297140 error:0
....
Aug 31 15:34:21 archlinux systemd-coredump[949]: Process 933 (light-locker) of user 1000 dumped core.
....
Aug 31 17:41:45 archlinux kernel: traps: light-locker[7342] trap int3 ip:7f67dac21411 sp:7fffd7388af0 error:0
....
Aug 31 17:41:46 archlinux systemd-coredump[7363]: Process 7342 (light-locker) of user 1000 dumped core.
....

That would appear to be the cause of the logout

Aug 31 17:30:13 archlinux kernel: CPU2: Core temperature above threshold, cpu clock throttled (total events = 1)
Aug 31 17:30:13 archlinux kernel: CPU3: Core temperature above threshold, cpu clock throttled (total events = 1)
Aug 31 17:30:13 archlinux kernel: CPU2: Core temperature/speed normal
Aug 31 17:30:13 archlinux kernel: CPU3: Core temperature/speed normal

You might want to also investigate this.
Edit:
Oh and welcome to the arch linux forums Endless Love.

Last edited by loqs (2017-08-31 12:35:14)

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#3 2017-08-31 14:54:17

Endless Love
Member
Registered: 2017-08-31
Posts: 15

Re: [SOLVED] Unexpectedly logout

loqs wrote:

You do not appear to have enabled microcode updates

Hmm  I remembered I had enabled it when I finished installing Arch Linux

loqs wrote:

That would appear to be the cause of the logout

Yeah, I also thought it was because of light-locker when I first look at the output of 

journalctl -b 0

, because I got logged out two times this afternoon and they happened at exactly the time of the light-locker things. I've done some google searches but I found nothing so I decided to post here.
I have just remembered that two days ago I change the "Automatically lock the session" setting of light-locker from "When the screensaver is activated" to "When the screensaver is deactivated", I've changed it back and hope I won't be logged out in the future (although I think it's not relevant)
light-locker setting

loqs wrote:

You might want to also investigate this.

I'm using an old laptop and this has happened for about 3 years already, I've tried a lot of things but the temperatures doesn't go down. I will buy a new laptop next year so I don't no longer care about it.

Thanks for your reply.  (and sorry for my bad English)

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#4 2017-08-31 18:59:50

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 78,877

Re: [SOLVED] Unexpectedly logout

It might relate to the locker, but the X11 server probably segfaults because of the synaptics driver
This is bad:

[  1724.011] (EE) BUG: triggered 'if (priv->num_active_touches > priv->num_slots)'
[  1724.026] (EE) BUG: synaptics.c:3028 in UpdateTouchState()
[  1724.045] (EE) 
[  1724.045] (EE) Backtrace:
[  1724.097] (EE) 0: /usr/lib/xorg/modules/input/synaptics_drv.so (_init+0x8dd) [0x7f0dd395564d]
[  1724.097] (EE) 1: /usr/lib/xorg/modules/input/synaptics_drv.so (_init+0x17d8) [0x7f0dd3957018]
[  1724.098] (EE) 2: /usr/lib/xorg/modules/input/synaptics_drv.so (_init+0x3da3) [0x7f0dd395bff3]
[  1724.099] (EE) 3: /usr/lib/xorg-server/Xorg (input_unlock+0x293) [0x55c5f5b79483]
[  1724.099] (EE) 4: /usr/lib/xorg-server/Xorg (OsCleanup+0x621) [0x55c5f5b7bea1]
[  1724.100] (EE) 5: /usr/lib/xorg-server/Xorg (input_unlock+0xde) [0x55c5f5b7907e]
[  1724.110] (EE) 6: /usr/lib/libpthread.so.0 (start_thread+0xd9) [0x7f0ddb895049]
[  1724.122] (EE) 7: /usr/lib/libc.so.6 (clone+0x3f) [0x7f0ddb5d5f48]

And probably the cause  of

[  7722.420] (EE) 0: /usr/lib/xorg-server/Xorg (OsLookupColor+0x139) [0x55c5f5b7af39]
[  7722.422] (EE) 1: /usr/lib/libpthread.so.0 (funlockfile+0x50) [0x7f0ddb89f82f]
[  7722.423] (EE) 2: /usr/lib/xorg-server/Xorg (XIGetDeviceProperty+0x40) [0x55c5f5b0fa40]
[  7722.423] (EE) 3: /usr/lib/xorg-server/Xorg (XIGetDeviceProperty+0x182) [0x55c5f5b0fc32]
[  7722.423] (EE) 4: /usr/lib/xorg-server/Xorg (XISetDevicePropertyDeletable+0x3d8) [0x55c5f5b10438]
[  7722.424] (EE) 5: /usr/lib/xorg-server/Xorg (SendErrorToClient+0x368) [0x55c5f5a151e8]
[  7722.424] (EE) 6: /usr/lib/xorg-server/Xorg (InitFonts+0x420) [0x55c5f5a191f0]
[  7722.425] (EE) 7: /usr/lib/libc.so.6 (__libc_start_main+0xea) [0x7f0ddb5084ca]
[  7722.426] (EE) 8: /usr/lib/xorg-server/Xorg (_start+0x2a) [0x55c5f5a02e9a]

The locker segfault *might* be due to the unexpected loss of the server connection (many X11 clients don't handle this gracefully)

This thread says the cause of the synaptics hiccup is "Disable Touchpad While Typing" - does that ring a bell for you?
https://www.linuxquestions.org/question … 175547050/

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#5 2017-09-01 06:20:02

Endless Love
Member
Registered: 2017-08-31
Posts: 15

Re: [SOLVED] Unexpectedly logout

seth wrote:

It might relate to the locker, but the X11 server probably segfaults because of the synaptics driver
This is bad:

[  1724.011] (EE) BUG: triggered 'if (priv->num_active_touches > priv->num_slots)'
[  1724.026] (EE) BUG: synaptics.c:3028 in UpdateTouchState()
[  1724.045] (EE) 
[  1724.045] (EE) Backtrace:
[  1724.097] (EE) 0: /usr/lib/xorg/modules/input/synaptics_drv.so (_init+0x8dd) [0x7f0dd395564d]
[  1724.097] (EE) 1: /usr/lib/xorg/modules/input/synaptics_drv.so (_init+0x17d8) [0x7f0dd3957018]
[  1724.098] (EE) 2: /usr/lib/xorg/modules/input/synaptics_drv.so (_init+0x3da3) [0x7f0dd395bff3]
[  1724.099] (EE) 3: /usr/lib/xorg-server/Xorg (input_unlock+0x293) [0x55c5f5b79483]
[  1724.099] (EE) 4: /usr/lib/xorg-server/Xorg (OsCleanup+0x621) [0x55c5f5b7bea1]
[  1724.100] (EE) 5: /usr/lib/xorg-server/Xorg (input_unlock+0xde) [0x55c5f5b7907e]
[  1724.110] (EE) 6: /usr/lib/libpthread.so.0 (start_thread+0xd9) [0x7f0ddb895049]
[  1724.122] (EE) 7: /usr/lib/libc.so.6 (clone+0x3f) [0x7f0ddb5d5f48]

And probably the cause  of

[  7722.420] (EE) 0: /usr/lib/xorg-server/Xorg (OsLookupColor+0x139) [0x55c5f5b7af39]
[  7722.422] (EE) 1: /usr/lib/libpthread.so.0 (funlockfile+0x50) [0x7f0ddb89f82f]
[  7722.423] (EE) 2: /usr/lib/xorg-server/Xorg (XIGetDeviceProperty+0x40) [0x55c5f5b0fa40]
[  7722.423] (EE) 3: /usr/lib/xorg-server/Xorg (XIGetDeviceProperty+0x182) [0x55c5f5b0fc32]
[  7722.423] (EE) 4: /usr/lib/xorg-server/Xorg (XISetDevicePropertyDeletable+0x3d8) [0x55c5f5b10438]
[  7722.424] (EE) 5: /usr/lib/xorg-server/Xorg (SendErrorToClient+0x368) [0x55c5f5a151e8]
[  7722.424] (EE) 6: /usr/lib/xorg-server/Xorg (InitFonts+0x420) [0x55c5f5a191f0]
[  7722.425] (EE) 7: /usr/lib/libc.so.6 (__libc_start_main+0xea) [0x7f0ddb5084ca]
[  7722.426] (EE) 8: /usr/lib/xorg-server/Xorg (_start+0x2a) [0x55c5f5a02e9a]

The locker segfault *might* be due to the unexpected loss of the server connection (many X11 clients don't handle this gracefully)

This thread says the cause of the synaptics hiccup is "Disable Touchpad While Typing" - does that ring a bell for you?
https://www.linuxquestions.org/question … 175547050/

Thanks for pointing that out, in fact I switched from libinput to xf86-input-synaptics-led yesterday, but I got logged out the day before that so I didn't think synaptics was the problem. I've uninstalled light-locker and I don't get logged out anymore but sometimes the X session gets hanged for a while (I still can move the mouse but it doesn't response to the click events).

I do have the "Disable Touchpad While Typing" enabled, but that feature doesn't seem to work (i.e. I can still use the touchpad while typing), I've just disabled it now. Hope this will work.

Thanks for your help.

Last edited by Endless Love (2017-09-01 06:20:50)

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#6 2017-09-02 13:08:40

Endless Love
Member
Registered: 2017-08-31
Posts: 15

Re: [SOLVED] Unexpectedly logout

I no longer get logged out after remove light-locker and turn off the "Disable Touchpad While Typing" feature of synaptics.
Thank you guys, @loqs and @seth for helping me.

How can I close this thread by the way?

Last edited by Endless Love (2017-09-02 13:09:06)

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#7 2017-09-02 13:12:21

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 78,877

Re: [SOLVED] Unexpectedly logout

You can't - just mark ist "[SOLVED]" by editing the subject of your original posts.

Mods close threads to prevent them from being spammed/necrobumped etc.

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