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Re: lightdm (testing): Long waiting time after login

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On 18.05.2018 12:07 songbird wrote:
> Dino wrote:
>> On 18.05.2018 01:07 Ben Caradoc-Davies wrote:
>>> On 17/05/18 21:02, Dino wrote:
>>>> Yes, you're right! When I wiggle the mouse the wait ends sooner.
>>>> Indeed, if I don't move the mouse at all and don't press any key the
>>>> screen just stays blank (I waited approx. 5 minutes and it still was
>>>> black).
>>>> I attached the output of dmesg | grep "random". As you can see, "crng
>>>> init done" appears after the 5 minutes I waited.
>>> Yes, this seems to confirm my suspicion that something is blocking by
>>> calling getrandom without GRND_NONBLOCK.
>>>
>>>> Since there is no "splash" in my kernel command line in grub, I added
>>>> "noplymouth" to it, but that didn't help. Maybe it's another package
>>>> that calls getrandom without GRND_NONBLOCK. Let me know if I can
>>>> support the investigation somehow.
>>> The situation you describe does not implicate plymouth, because the
>>> pause occurs after you enter your credentials. This is a tricky one,
>>> because it could be lightdm, or systemd which is a known offender,
>>> xorg, or anything else in your session. This is a tricky problem to
>>> diagnose because, as soon as you start typing, your login will
>>> complete. I suggest reporting this against lightdm to get maintainer
>>> advice. The Debian Xfce and lightdm maintainer has commented on
>>> #897572 and is aware of the getrandom issue, but I could not find any
>>> lightdm issue for it.
>>>
>>> Which iso image did you use to install testing?
>>>
>>> Kind regards,
>>>
>> Seems like there is a related lightdm issue:
>> https://github.com/CanonicalLtd/lightdm/issues/17
>> I added a comment pointing to the #897572 bug report. In addition, I
>> also installed GDM to see whether the same problem occurs. Indeed, not
>> even the login screen is shown before I have pressed some keys.
>>
>> To install testing I used the latest weekly build of the netinstaller
>> with non-free firmware (firmware-testing-amd64-netinst.iso).
>>
>> Best regards,
>> Dino
>>
>>
>    it looks like the issue is known to many in various lists
> i'm reading (kernel, debian-kernel) and is being worked on
> but in the meantime i'm not sure how to get around it.
>
>    that i'm not seeing it using MATE desktop i'm not sure why
> but i've gone a convoluted route sometimes and perhaps i don't
> have parts installed that you have...  then again i'm also
> using auto logon feature.
>
>    do you have automatic logon set in your lightdm configuration?
>
>
>    songbird
Yes, auto logon is configured since I want to use the PC as an embedded 
system. Therefore, I'm also looking for a workaround because I cannot 
connect a mouse or a keyboard.

Surprisingly, this behaviour does not occur on my desktop running 
testing with all packages upgraded to the same versions...

Dino

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Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-17 00:50 +0200
  Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-17 11:10 +0200
    Re: lightdm (testing): Long waiting time after login Curt <curty@free.fr> - 2018-05-17 12:10 +0200
    Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-18 01:10 +0200
      Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-18 08:50 +0200
        Re: lightdm (testing): Long waiting time after login songbird <songbird@anthive.com> - 2018-05-18 12:10 +0200
          Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-18 16:00 +0200
            Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-19 00:10 +0200
              Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-19 01:30 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-19 03:10 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-21 05:30 +0200
                Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-22 10:00 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-23 00:50 +0200
                Re: lightdm (testing): Long waiting time after login Glenn English <ghe2001@gmail.com> - 2018-05-23 18:50 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-24 00:20 +0200
                Re: lightdm (testing): Long waiting time after login Glenn English <ghe2001@gmail.com> - 2018-05-24 15:50 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-25 00:30 +0200

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