Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Ludwig Zins]

Am 09.09.2016 um 22:00 schrieb Bennett Piater:
>> .xsession-errors contains the output of every GUI app you are running,
>> as if you would launch all those apps in terminals.
> 
> That's good to know, thank you :)
> 
> I'm very curious as to what I will (or won't) find next time the freeze
> happens. It hasn't happened this boot, ever since I sent SIGCONT. I will
> reboot tomorrow to find out if that "resets" the problem.
> 
> Cheers,
> Bennett
> 

I could solve the problem so far. I switched to google-chrome-beta.
Since then my swap is 0% and I hadn't any freeze. It seems the poblem
was/is caused by chromium.

Ludwig





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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[cyelae]

(Sorry if I sent this mail twice, I'm having troubles with my mail 
client)


I've experienced locks too, nothing in logs that I could find,
but after swaping back to the main kernel, from linux-ck, everything was
fine. Maybe this is related for you too? The update that caused the
lockups seems to match

http://ck-hack.blogspot.fr/2016/09/bfs-497-linux-47-ck4.html

Alas I still have no explanation for the random lockups some people
are seeing, but I have seen reports of it happening on mainline
kernels as well now, so while I'm always suspicious of my own code,
there is also the chance that BFS exacerbates an issue in mainline.
Something that appears common is onboard Intel graphics with the
Haswell chipset.


https://aur.archlinux.org/cgit/aur.git/log/?h=linux-ck

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[David N Murray via arch-general]

On 09/17/2016 07:33 AM, Ludwig Zins wrote:

Hi all,

I had two random freezes too. One after a screenlock and the second one
during using Chromium. The second freeze wasn't a complete one. Mouse
moves were delayed approx. 30s and were very stuttering. I only could do
a hard reset.

I noticed, that despite my memory isn't used completly (3GB/4GB) 50% of
my swap space are used. Further I see chromium uses a lot of swap space
(approx. 450MB). I don't know if this is an indication of the problem. I
never checked the usage of swap before.

My setup:
i3 4.12
py3status 3.1rc0
Chromium 53
xautolock 2.2



Regards
Ludwig

I've had 2 lockups during the last week, too, but I wasn't on the 
machine when they happened.  Not sure if it's related, but in my case, 
it was a desktop machine and the whole system froze (sshd wasn't 
answering, either).  I'm not seing any indication of what's happening in 
journalctl, other than journalctl stops recording anything at a certain 
time.


I've also see the increased swap usage over the last few months. I went 
through the swap page at https://wiki.archlinux.org/index.php/Swap and 
https://rudd-o.com/linux-and-free-software/tales-from-responsivenessland-why-linux-feels-slow-and-how-to-fix-that 
and saw no change. Every morning I come down to something like this:


$ free -m
  totalusedfree  shared buff/cache   
available

Mem:  159983345 421 240 12230   12080
Swap: 163831374   15009

And all my apps appear to be swapped out (Chromium, Thunderbird, even a 
locked KeePassX). I do run backups overnight and imagine that the 
buff/cache is filling up with directories and pushing out the actual 
apps.  I'm thinking about disabling swap at this point, since I don't 
really do anything with the box that requires swap space, or approaches 
16G of ram.


Dave

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Ludwig Zins]

Am 09.09.2016 um 22:00 schrieb Bennett Piater:
>> .xsession-errors contains the output of every GUI app you are running,
>> as if you would launch all those apps in terminals.
> 
> That's good to know, thank you :)
> 
> I'm very curious as to what I will (or won't) find next time the freeze
> happens. It hasn't happened this boot, ever since I sent SIGCONT. I will
> reboot tomorrow to find out if that "resets" the problem.
> 
> Cheers,
> Bennett
> 


Hi all,

I had two random freezes too. One after a screenlock and the second one
during using Chromium. The second freeze wasn't a complete one. Mouse
moves were delayed approx. 30s and were very stuttering. I only could do
a hard reset.

I noticed, that despite my memory isn't used completly (3GB/4GB) 50% of
my swap space are used. Further I see chromium uses a lot of swap space
(approx. 450MB). I don't know if this is an indication of the problem. I
never checked the usage of swap before.

My setup:
i3 4.12
py3status 3.1rc0
Chromium 53
xautolock 2.2



Regards
Ludwig

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Guillaume ALAUX]

On Sun, Sep 11, 2016 at 9:13 PM, Bennett Piater  wrote:
> Oh, that looks promising. I'll read through those issues tomorrow.
> Thank you! :)
>
> Cheers,
> Bennett
>
> On 09/11/2016 09:08 PM, Martin Kühne via arch-general wrote:
>> Oh, this stuff might all be related to the issue: [0], [1], [2]
>>
>> cheers!
>> mar77i
>>
>> [0] 
>> https://faq.i3wm.org/question/4631/dont-sigstop-when-in-hide-mode/here.html
>> [1] https://github.com/ultrabug/py3status/issues/253
>> [2] https://github.com/i3/i3/issues/2280
>>
>
> --
> GPG fingerprint: 871F 1047 7DB3 DDED 5FC4 47B2 26C7 E577 EF96 7808
>

New freeze happened to me yesterday. Before the computer got
completely frozen, I managed to have a look at `htop`, `vmsize` and
`free`. All my 8Go of RAM were full. 84Go of shared memory were showed
as used by `/usr/lib/chromium/nacl_helper`. This looks like a known
issue with Chromium [0]. I did what seems to be generally advised: use
a fresh ~/.config/chromium directory.

If this fixes it for me, this would imply I have a different issue
from OP, I would then not follow on this thread. Otherwise I will have
to dig these i3 links and let you know.

Thanks for the i3 issue links :)

[0] 
https://www.reddit.com/r/chrome/comments/498br6/help_why_is_nacl_helper_84g_large_also_overnight/

Guillaume

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

Oh, that looks promising. I'll read through those issues tomorrow.
Thank you! :)

Cheers,
Bennett

On 09/11/2016 09:08 PM, Martin Kühne via arch-general wrote:
> Oh, this stuff might all be related to the issue: [0], [1], [2]
> 
> cheers!
> mar77i
> 
> [0] 
> https://faq.i3wm.org/question/4631/dont-sigstop-when-in-hide-mode/here.html
> [1] https://github.com/ultrabug/py3status/issues/253
> [2] https://github.com/i3/i3/issues/2280
> 

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Martin Kühne via arch-general]

Oh, this stuff might all be related to the issue: [0], [1], [2]

cheers!
mar77i

[0] https://faq.i3wm.org/question/4631/dont-sigstop-when-in-hide-mode/here.html
[1] https://github.com/ultrabug/py3status/issues/253
[2] https://github.com/i3/i3/issues/2280

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Guillaume ALAUX]

On Sun, Sep 11, 2016 at 8:57 PM, Ralf Mardorf  wrote:
>
> On Sun, 11 Sep 2016 20:51:03 +0200, Bennett Piater wrote:
> >> No freeze since the one I told you about! I will definitely
> >> investigate further if/when I get a new one.
> >
> >Very weird...
> >I had another one yesterday, but again, no clue what caused it.
> >$(killall -CONT i3) fixed it again, so be sure to try that if you get
> >another freeze :)
> >
> >Sadly, the logs contained zero indication, so I don't know how to
> >proceed.
>
> Seemingly it is a software issue, since somebody else mentioned to
> experience the same after upgrading, but you never know. Just in case
> you could check the battery and run memtest.

I have experienced yet another freeze this afternoon. Nothing in any
log helps me diagnose. I could barely run a htop which seemed to show
memory exhaustion. I am keeping an eye on memory consumption from now
on.

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Ralf Mardorf]

On Sun, 11 Sep 2016 20:51:03 +0200, Bennett Piater wrote:
>> No freeze since the one I told you about! I will definitely
>> investigate further if/when I get a new one.  
>
>Very weird...
>I had another one yesterday, but again, no clue what caused it.
>$(killall -CONT i3) fixed it again, so be sure to try that if you get
>another freeze :)
>
>Sadly, the logs contained zero indication, so I don't know how to
>proceed.

Seemingly it is a software issue, since somebody else mentioned to
experience the same after upgrading, but you never know. Just in case
you could check the battery and run memtest.

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Martin Kühne via arch-general]

Just as an aside from a technical perspective: Keep SIG_IGN vs SIG_DFL
in mind. I guess signals are passed from the child process to the
parent? Then again, I don't know where setsid() comes into play,
whether i3 does it / does it correctly, and whether that has an effect
on the signal processing queue.

SIGCHEERS!
mar77i

[0] http://man7.org/linux/man-pages/man2/signal.2.html

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

> No freeze since the one I told you about! I will definitely
> investigate further if/when I get a new one.

Very weird...
I had another one yesterday, but again, no clue what caused it.
$(killall -CONT i3) fixed it again, so be sure to try that if you get
another freeze :)

Sadly, the logs contained zero indication, so I don't know how to proceed.

Thanks,
Bennett

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Guillaume ALAUX]

On Fri, Sep 9, 2016 at 10:16 PM, Bennett Piater  wrote:
>> Comparing your pacman.log with mine (mine taken from 2016-08-23 to
>> 2016-09-05), here is the list of common packages we both have either
>> installed or upgraded:
>>
>> - man-db
>> - mariadb
>> - mariadb-clients
>> - mediainfo
>> - nano
>> - networkmanager
>> - openvpn
>> - pacman-mirrorlist
>> - python2-appdirs
>> - python2-setuptools
>> - python-appdirs
>> - python-setuptools
>> - webkit2gtk
>> - xdotool
>
> Merci beaucoup! :)
>
> Interestingly, none of these packages look like they could cause this -
> I could maybe imagine xdotool, but anything else...
> Did the freeze happen again for you, or has it stopped?
>
> Thanks,
> Bennett
>
> --
> GPG fingerprint: 871F 1047 7DB3 DDED 5FC4 47B2 26C7 E577 EF96 7808
>

No freeze since the one I told you about! I will definitely
investigate further if/when I get a new one.

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

> Comparing your pacman.log with mine (mine taken from 2016-08-23 to
> 2016-09-05), here is the list of common packages we both have either
> installed or upgraded:
> 
> - man-db
> - mariadb
> - mariadb-clients
> - mediainfo
> - nano
> - networkmanager
> - openvpn
> - pacman-mirrorlist
> - python2-appdirs
> - python2-setuptools
> - python-appdirs
> - python-setuptools
> - webkit2gtk
> - xdotool

Merci beaucoup! :)

Interestingly, none of these packages look like they could cause this -
I could maybe imagine xdotool, but anything else...
Did the freeze happen again for you, or has it stopped?

Thanks,
Bennett

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

> .xsession-errors contains the output of every GUI app you are running,
> as if you would launch all those apps in terminals.

That's good to know, thank you :)

I'm very curious as to what I will (or won't) find next time the freeze
happens. It hasn't happened this boot, ever since I sent SIGCONT. I will
reboot tomorrow to find out if that "resets" the problem.

Cheers,
Bennett

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Guillaume ALAUX]

On Fri, Sep 9, 2016 at 5:38 PM, Ralf Mardorf  wrote:
> On Fri, 9 Sep 2016 17:32:40 +0200, Bennett Piater wrote:
>>> Regarding
>>>
>>> https://www.google.de/?gws_rd=ssl#q=+linux+no+.xsession-errors
>>> https://bbs.archlinux.org/viewtopic.php?id=143068
>>> http://www.linuxquestions.org/questions/slackware-14/where-is-~-xsession-errors-log-867498/
>>>
>>> $ startx 2> ~/.xsession-errors
>>>
>>> should do the job.
>>
>>Thank you, I will change that in my .profile and see if that contains
>>useful information.
>>
>>However, if sending SIGCONT to i3 works the next time this happens, I
>>don't think that X has anything to do with it...
>
> .xsession-errors contains the output of every GUI app you are running,
> as if you would launch all those apps in terminals.

Comparing your pacman.log with mine (mine taken from 2016-08-23 to
2016-09-05), here is the list of common packages we both have either
installed or upgraded:

- man-db
- mariadb
- mariadb-clients
- mediainfo
- nano
- networkmanager
- openvpn
- pacman-mirrorlist
- python2-appdirs
- python2-setuptools
- python-appdirs
- python-setuptools
- webkit2gtk
- xdotool

Guillaume

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Ralf Mardorf]

On Fri, 9 Sep 2016 17:32:40 +0200, Bennett Piater wrote:
>> Regarding
>> 
>> https://www.google.de/?gws_rd=ssl#q=+linux+no+.xsession-errors
>> https://bbs.archlinux.org/viewtopic.php?id=143068
>> http://www.linuxquestions.org/questions/slackware-14/where-is-~-xsession-errors-log-867498/
>> 
>> $ startx 2> ~/.xsession-errors
>> 
>> should do the job.  
>
>Thank you, I will change that in my .profile and see if that contains
>useful information.
>
>However, if sending SIGCONT to i3 works the next time this happens, I
>don't think that X has anything to do with it...

.xsession-errors contains the output of every GUI app you are running,
as if you would launch all those apps in terminals.

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

> Regarding
> 
> https://www.google.de/?gws_rd=ssl#q=+linux+no+.xsession-errors
> https://bbs.archlinux.org/viewtopic.php?id=143068
> http://www.linuxquestions.org/questions/slackware-14/where-is-~-xsession-errors-log-867498/
> 
> $ startx 2> ~/.xsession-errors
> 
> should do the job.

Thank you, I will change that in my .profile and see if that contains
useful information.

However, if sending SIGCONT to i3 works the next time this happens, I
don't think that X has anything to do with it...

Cheers,
Bennett

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Ralf Mardorf]

On Fri, 9 Sep 2016 17:19:33 +0200, Bennett Piater wrote:
>On 09/09/2016 05:17 PM, Ralf Mardorf wrote:
>> On Fri, 9 Sep 2016 16:11:48 +0200, Bennett Piater wrote:  
>>> I've had a very elusive and frustrating problem this week and don't
>>> know where to look anymore.  
>> 
>> Where did you already look?
>> 
>>   $ less $HOME/.xsession-errors
>> 
>> ?
>I do not have that file.

Regarding

https://www.google.de/?gws_rd=ssl#q=+linux+no+.xsession-errors
https://bbs.archlinux.org/viewtopic.php?id=143068
http://www.linuxquestions.org/questions/slackware-14/where-is-~-xsession-errors-log-867498/

$ startx 2> ~/.xsession-errors

should do the job.

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Ralf Mardorf]

On Fri, 9 Sep 2016 16:11:48 +0200, Bennett Piater wrote:
>I've had a very elusive and frustrating problem this week and don't
>know where to look anymore.

Where did you already look?

  $ less $HOME/.xsession-errors

?

Regards,
Ralf

Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

I do not have that file.

Cheers,
Bennett

On 09/09/2016 05:17 PM, Ralf Mardorf wrote:
> On Fri, 9 Sep 2016 16:11:48 +0200, Bennett Piater wrote:
>> I've had a very elusive and frustrating problem this week and don't
>> know where to look anymore.
> 
> Where did you already look?
> 
>   $ less $HOME/.xsession-errors
> 
> ?
> 
> Regards,
> Ralf
> 

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

> (I think I managed to trace them back to Sept 1st and Sept 5th).

My last update before the apparently breaking one was 2016-08-24.
So, maybe some upgrade between 2016-08-24 and 2016-09-04 doesn't play
well with i3...

Would you mind cross-checking your upgrades between 2016-08-24 and
2016-09-01 with my log [0] when you have the time?

> After a quick look at my journalctl, I can't really see anything suspicious.

i3wm doesn't log to systemd. I produce my logs by starting i3 with

exec i3 --shmlog-size=26214400 -V -d all > ~/.i3/logs/$(date
-Iseconds).log

in my ~/.xinitrc.

However, they don't produce any useful information AFAICT, even with
debug verbosity.

Is it possible that i3 receives SIGSTOP for some reason?

Merci beaucoup,
Bennett

[0]: https://vps1.piater.name/commie/#dvm1K6lg

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Re: [arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Guillaume ALAUX]

On Fri, Sep 9, 2016 at 4:11 PM, Bennett Piater  wrote:
> Hi all,
> I've had a very elusive and frustrating problem this week and don't know
> where to look anymore.
> Maybe one of you has an idea? :)
>
> Since 2016-09-04, i3wm freezes every once and a while; often after
> waking the screen (even if it wasn't locked), a few times also directly
> or a few minutes after logging in.
> I have not yet found a conclusive pattern.
>
> The freeze is complete; no reaction to mouse or keyboard activity, not
> even in the debug logs. However, I can interact with the focused window
> just fine (I obviously cannot change focus).
> i3 also doesn't react to IPC calls (tried with i3-msg).
>
> Up to now, I had sent SIGTERM to important programs that had been
> running and KILLed i3 (it doesn't react to SIGTERM, either).
> Today, in my frustration, I tried sending SIGCONT instead.
> To my surprise, i3 immediately sprung back to life.
>
> What I do not understand is that i3 hasn't been updated in a while, let
> alone since Sunday.
> FWIW, I am running the fork i3-gaps instead of i3, but that is very
> close to upstream and has been stable forever.
>
> I posted /var/log/pacman.log from the day when it started on my server [0].
>
> Does anyone have any clue what could be causing this?
>
> Thanks,
> Bennett
>
> [0]: https://vps1.piater.name/commie/#dvm1K6lg
>
> --
> GPG fingerprint: 871F 1047 7DB3 DDED 5FC4 47B2 26C7 E577 EF96 7808
>

I have had two "i3 complete freezes" recently (I think I managed to
trace them back to Sept 1st and Sept 5th). None were after an
hibernation wake-up nor anything. Just using Chromium as usual then
suddenly mouse slows down and everything freezes with no control on
it. At the time I thought Chromium was the culprit. Had to reboot the
machine throught the power switch. I did not try to investigate
further.

After a quick look at my journalctl, I can't really see anything suspicious.

FYI, I am using vanilla i3 from community with i3pystatus.

[arch-general] i3wm (randomly?) freezes; SIGCONT seems to fix it

[Bennett Piater]

Hi all,
I've had a very elusive and frustrating problem this week and don't know
where to look anymore.
Maybe one of you has an idea? :)

Since 2016-09-04, i3wm freezes every once and a while; often after
waking the screen (even if it wasn't locked), a few times also directly
or a few minutes after logging in.
I have not yet found a conclusive pattern.

The freeze is complete; no reaction to mouse or keyboard activity, not
even in the debug logs. However, I can interact with the focused window
just fine (I obviously cannot change focus).
i3 also doesn't react to IPC calls (tried with i3-msg).

Up to now, I had sent SIGTERM to important programs that had been
running and KILLed i3 (it doesn't react to SIGTERM, either).
Today, in my frustration, I tried sending SIGCONT instead.
To my surprise, i3 immediately sprung back to life.

What I do not understand is that i3 hasn't been updated in a while, let
alone since Sunday.
FWIW, I am running the fork i3-gaps instead of i3, but that is very
close to upstream and has been stable forever.

I posted /var/log/pacman.log from the day when it started on my server [0].

Does anyone have any clue what could be causing this?

Thanks,
Bennett

[0]: https://vps1.piater.name/commie/#dvm1K6lg

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