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1. zunda ? nはおまけ :green_dango: (zundan@mastodon.zunda.ninja@mastodon.zunda.ninja)'s status on Sunday, 14-Oct-2018 11:02:45 JST zunda ? nはおまけ :green_dango:

   似たレポートがありました

   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788387

   Adding any of these commands to the boot allows the system to load properly:

   - acpi=off
   - pci=noacpi
   - acpi=noirq

   acpi=noirqの方が影響が少なそうに感じられる←

   • zunda ? nはおまけ :green_dango: (zundan@mastodon.zunda.ninja@mastodon.zunda.ninja)'s status on Sunday, 14-Oct-2018 12:23:36 JST zunda ? nはおまけ :green_dango:

     in reply to

     acpi=noirqで素直に起動してきました

     $ dmesg | head -2; dmesg | grep -A1 initramfs
     [ 0.000000] Linux version 4.15.0-36-generic (buildd@lgw01-amd64-031) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 (Ubuntu 4.15.0-36.39-generic 4.15.18)
     [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=a6268849-42cb-4d0e-80f3-eb2704407c01 ro acpi=noirq vga=normal
     [ 0.371483] Unpacking initramfs...
     [ 2.292182] Freeing initrd memory: 55196K

   • zunda ? nはおまけ :green_dango: (zundan@mastodon.zunda.ninja@mastodon.zunda.ninja)'s status on Sunday, 14-Oct-2018 12:59:56 JST zunda ? nはおまけ :green_dango:

     in reply to

     acpi=noirqをはずした場合、Unpacking initramfs...に5.8分かかってる。

     dmesg | head -2; dmesg | grep -A1 initramfs
     [ 0.000000] Linux version 4.15.0-36-generic (buildd@lgw01-amd64-031) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 (Ubuntu 4.15.0-36.39-generic 4.15.18)
     [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=a6268849-42cb-4d0e-80f3-eb2704407c01 ro vga=normal
     [ 1.613146] Unpacking initramfs...
     [ 350.054603] perf: interrupt took too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 79750

   • zunda ? nはおまけ :green_dango: (zundan@mastodon.zunda.ninja@mastodon.zunda.ninja)'s status on Sunday, 14-Oct-2018 13:00:38 JST zunda ? nはおまけ :green_dango:

     in reply to

     loginにもなんだか時間がかかるなあ

   • zunda ? nはおまけ :green_dango: (zundan@mastodon.zunda.ninja@mastodon.zunda.ninja)'s status on Sunday, 14-Oct-2018 13:13:20 JST zunda ? nはおまけ :green_dango:

     in reply to

     4.4.0-135ならacpi=noirqなしでも素早く起動してくる

     $ dmesg | head -5 | tail -2; dmesg | grep -A1 initramfs
     [ 0.000000] Linux version 4.4.0-135-generic (buildd@lcy01-amd64-020) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.10) ) #161-Ubuntu SMP Mon Aug 27 10:45:01 UTC 2018 (Ubuntu 4.4.0-135.161-generic 4.4.140)
     [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-135-generic root=UUID=a6268849-42cb-4d0e-80f3-eb2704407c01 ro vga=normal
     [ 0.426614] Unpacking initramfs...
     [ 3.775749] Freeing initrd memory: 43492K

   • zunda ? nはおまけ :green_dango: (zundan@mastodon.zunda.ninja@mastodon.zunda.ninja)'s status on Sunday, 14-Oct-2018 13:18:14 JST zunda ? nはおまけ :green_dango:

     in reply to

     4.15.0-36での/proc/cpuinfo

     processor : 0
     vendor_id : GenuineIntel
     cpu family : 6
     model : 55
     model name : Intel(R) Atom(TM) CPU E3815 @ 1.46GHz
     stepping : 3
     microcode : 0x31e
     cpu MHz : 554.015
     cache size : 512 KB
     physical id : 0
     siblings : 1
     core id : 0
     cpu cores : 1
     apicid : 0
     initial apicid : 0
     fpu : yes
     fpu_exception : yes
     cpuid level : 11
     wp : yes
     flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology tsc_reliable nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes rdrand lahf_lm 3dnowprefetch epb pti tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm arat
     bugs : cpu_meltdown spectre_v1 spectre_v2
     bogomips : 2932.60
     clflush size : 64
     cache_alignment : 64
     address sizes : 36 bits physical, 48 bits virtual
     power management: