From: field.engin...@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."
