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Re: Big problem computer not booting

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From: field.engineer@gmail.com

> To: debian-user@lists.debian.org
>
> On 08/10/2017 12:00 PM, kelsang sherab wrote:
>> I run Debian stretch on MacBook Air
>>
>> I did a restore backup from previous system[debian Jessie ]
>>
>> Now machine is not booting
>>
>> upon boot the machine gives the normal GRUB menu:
>> Debian GNU/Linux
>> Advanced options for Debian GNU/linux
>>
>> Click the 1st one
>>
>> saying
>> Loading etc
>> Loading initial ram disk
>>
>> then a list of checks
>>
>> [ 0.049346] DMAR-IR:[Firmware Bug] : ioapic 2 has no mappin iommu,
>> interrupt remapping will be disabled
>> /dev/sda2: clean, 348430/7118848 files, 7186186/28466432 blocks
>> [ 3.895353] sd 6:0:0:0: [sdb] No Caching mode page found
>> [ 3.895361] sd 6:0:0:0: [sdb] Assuming drive cache: write trhough
>> [FAILED] Failed to start Network Manager Wait Online.
>> See "systemctl status NetwrokManager-wait-online.service" for details.
>> then a list of things starting all [OK]
>>
>> and then nothing happens
>>
>> Switching the machine off and re-starting it into the advance option i
>> get some root access and i see al my files.I am not able to connect to the internet
>> When trying to do something like apt-get update
>> the system returns that a shared library libapt-pkg.so.4.12 is not
>> installed.
>> but I have no internet access so I cannot either find the lib or install
>> it. And so I cannot update the system and it feels like a catch 22
>> I could really do with some help
>
> I don"t know, but maybe I can help with the network, do an "#ifconfig
> -a" to get the name of your interface and then "#ifconfig
> (name-of-interface) up" and see if that helps get things going.

I suspect this has to do with the settings of systemd trying to bring a
functional network up before it completes the sequence, but as it is
set to give up at a point it finds yet a different place to get stuck.
I remember a while I had found where to set the time limit but didn't
record the find and while on wifi I have to deal with this delayed booting
myself.
But, on the above problem out of curiosity I found this piece that may
be helpful.  https://ubuntuforums.org/showthread.php?t=2254677
It seems on such machines the interrupts get all twisted and tangled
up.  Quote from the link:
"The ivrs table is wrong, it points to non existant IOAPIC[0] and IOAPIC[255], so to override this i use this commandline in grub:
ivrs_ioapic[7]=00:14.0 ivrs_ioapic[8]=00:00.1."

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Big problem computer not booting  kelsang sherab <sherab@fastmail.com> - 2017-08-10 21:20 +0200
  Re: Big problem computer not booting Jimmy Johnson <field.engineer@gmail.com> - 2017-08-11 01:00 +0200
    Re: Big problem computer not booting Fungi4All <fungilife@protonmail.com> - 2017-08-11 10:50 +0200
      Re: Big problem computer not booting Jimmy Johnson <field.engineer@gmail.com> - 2017-08-12 02:10 +0200

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