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Thread: Kernel fails to boot

  1. #1
    Join Date
    Dec 2013
    Beans
    10

    Kernel fails to boot

    Hello,

    Since i've done the upgrade to ubuntu 13.10, i am unable to boot.
    After a lot of searching, i discovered that the latest kernel does not boot. Instead of fixing the problem, i went for the quick solution: I added "GRUB_DEFAULT=saved" and "GRUB_SAVEDEFAULT=true" to /etc/default/grub and simply selected an older kernel:
    Code:
    $ uname -r
    3.8.0-34-generic
    This worked fine at first, but now i am running into other issues as it is not the correct kernel for this ubuntu release

    My question: how can this be debugged? When i boot the machine, i don't even get a terminal so i have no clue where i should start to search (and i am a complete noob when it comes to kernels )

    Here is a screenshot of what happens when booting with the new kernel



    FYI, i did an lshw, don't know if this is useful
    Code:
    mediacenter
        description: Desktop Computer
        product: System Product Name (To Be Filled By O.E.M.)
        vendor: System manufacturer
        version: System Version
        serial: System Serial Number
        width: 32 bits
        capabilities: smbios-2.6 dmi-2.6 smp-1.4 smp
        configuration: boot=normal chassis=desktop cpus=2 family=To Be Filled By O.E.M. sku=To Be Filled By O.E.M. uuid=A0E6423B-9570-DF11-BEB8-20CF3001266C
      *-core
           description: Motherboard
           product: P7H55-M
           vendor: ASUSTeK Computer INC.
           physical id: 0
           version: Rev X.0x
           serial: 105617820000919
           slot: To Be Filled By O.E.M.
         *-firmware
              description: BIOS
              vendor: American Megatrends Inc.
              physical id: 0
              version: 0503
              date: 04/08/2010
              size: 64KiB
              capacity: 8128KiB
              capabilities: isa pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
         *-cpu:0
              description: CPU
              product: Intel(R) Core(TM) i3 CPU         540  @ 3.07GHz
              vendor: Intel Corp.
              physical id: 4
              bus info: cpu@0
              version: 6.5.2
              serial: 0002-0652-0000-0000-0000-0000
              slot: LGA1156
              size: 3066MHz
              capacity: 3800MHz
              width: 64 bits
              clock: 133MHz
              capabilities: x86-64 boot fpu fpu_exception wp 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 nx rdtscp constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm arat dtherm tpr_shadow vnmi flexpriority ept vpid
              configuration: cores=2 enabledcores=2 id=1 threads=4
            *-cache:0
                 description: L1 cache
                 physical id: 5
                 slot: L1-Cache
                 size: 128KiB
                 capacity: 128KiB
                 capabilities: internal write-through instruction
            *-cache:1
                 description: L2 cache
                 physical id: 6
                 slot: L2-Cache
                 size: 512KiB
                 capacity: 512KiB
                 capabilities: internal write-through unified
            *-cache:2
                 description: L3 cache
                 physical id: 7
                 slot: L3-Cache
                 size: 4MiB
                 capacity: 4MiB
                 capabilities: internal write-back unified
            *-logicalcpu:0
                 description: Logical CPU
                 physical id: 1.1
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:1
                 description: Logical CPU
                 physical id: 1.2
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:2
                 description: Logical CPU
                 physical id: 1.3
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:3
                 description: Logical CPU
                 physical id: 1.4
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:4
                 description: Logical CPU
                 physical id: 1.5
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:5
                 description: Logical CPU
                 physical id: 1.6
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:6
                 description: Logical CPU
                 physical id: 1.7
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:7
                 description: Logical CPU
                 physical id: 1.8
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:8
                 description: Logical CPU
                 physical id: 1.9
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:9
                 description: Logical CPU
                 physical id: 1.a
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:10
                 description: Logical CPU
                 physical id: 1.b
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:11
                 description: Logical CPU
                 physical id: 1.c
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:12
                 description: Logical CPU
                 physical id: 1.d
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:13
                 description: Logical CPU
                 physical id: 1.e
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:14
                 description: Logical CPU
                 physical id: 1.f
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:15
                 description: Logical CPU
                 physical id: 1.10
                 width: 64 bits
                 capabilities: logical
         *-memory
              description: System Memory
              physical id: 36
              slot: System board or motherboard
              size: 4GiB
            *-bank:0
                 description: DIMM DDR Synchronous 1333 MHz (0.8 ns)
                 product: PartNum0
                 vendor: Manufacturer0
                 physical id: 0
                 serial: SerNum0
                 slot: DIMM0
                 size: 2GiB
                 width: 64 bits
                 clock: 1333MHz (0.8ns)
            *-bank:1
                 description: DIMM DDR Synchronous 1333 MHz (0.8 ns)
                 product: PartNum1
                 vendor: Manufacturer1
                 physical id: 1
                 serial: SerNum1
                 slot: DIMM1
                 size: 2GiB
                 width: 64 bits
                 clock: 1333MHz (0.8ns)
            *-bank:2
                 description: DIMM [empty]
                 product: PartNum2
                 vendor: Manufacturer2
                 physical id: 2
                 serial: SerNum2
                 slot: DIMM2
            *-bank:3
                 description: DIMM [empty]
                 product: PartNum3
                 vendor: Manufacturer3
                 physical id: 3
                 serial: SerNum3
                 slot: DIMM3
         *-cpu:1
              physical id: 1
              bus info: cpu@1
              version: 6.5.2
              serial: 0002-0652-0000-0000-0000-0000
              size: 3100MHz
              capabilities: vmx ht
              configuration: id=1
            *-logicalcpu:0
                 description: Logical CPU
                 physical id: 1.1
                 capabilities: logical
            *-logicalcpu:1
                 description: Logical CPU
                 physical id: 1.2
                 capabilities: logical
            *-logicalcpu:2
                 description: Logical CPU
                 physical id: 1.3
                 capabilities: logical
            *-logicalcpu:3
                 description: Logical CPU
                 physical id: 1.4
                 capabilities: logical
            *-logicalcpu:4
                 description: Logical CPU
                 physical id: 1.5
                 capabilities: logical
            *-logicalcpu:5
                 description: Logical CPU
                 physical id: 1.6
                 capabilities: logical
            *-logicalcpu:6
                 description: Logical CPU
                 physical id: 1.7
                 capabilities: logical
            *-logicalcpu:7
                 description: Logical CPU
                 physical id: 1.8
                 capabilities: logical
            *-logicalcpu:8
                 description: Logical CPU
                 physical id: 1.9
                 capabilities: logical
            *-logicalcpu:9
                 description: Logical CPU
                 physical id: 1.a
                 capabilities: logical
            *-logicalcpu:10
                 description: Logical CPU
                 physical id: 1.b
                 capabilities: logical
            *-logicalcpu:11
                 description: Logical CPU
                 physical id: 1.c
                 capabilities: logical
            *-logicalcpu:12
                 description: Logical CPU
                 physical id: 1.d
                 capabilities: logical
            *-logicalcpu:13
                 description: Logical CPU
                 physical id: 1.e
                 capabilities: logical
            *-logicalcpu:14
                 description: Logical CPU
                 physical id: 1.f
                 capabilities: logical
            *-logicalcpu:15
                 description: Logical CPU
                 physical id: 1.10
                 capabilities: logical
         *-pci
              description: Host bridge
              product: Core Processor DRAM Controller
              vendor: Intel Corporation
              physical id: 100
              bus info: pci@0000:00:00.0
              version: 12
              width: 32 bits
              clock: 33MHz
            *-pci:0
                 description: PCI bridge
                 product: Core Processor PCI Express x16 Root Port
                 vendor: Intel Corporation
                 physical id: 1
                 bus info: pci@0000:00:01.0
                 version: 12
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
                 configuration: driver=pcieport
                 resources: irq:40 ioport:c000(size=4096) memory:f6000000-f7afffff ioport:e0000000(size=335544320)
               *-display
                    description: VGA compatible controller
                    product: GT218 [GeForce 210]
                    vendor: NVIDIA Corporation
                    physical id: 0
                    bus info: pci@0000:01:00.0
                    version: a2
                    width: 64 bits
                    clock: 33MHz
                    capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
                    configuration: driver=nouveau latency=0
                    resources: irq:16 memory:f6000000-f6ffffff memory:e0000000-efffffff memory:f2000000-f3ffffff ioport:cc00(size=128) memory:f7a00000-f7a7ffff
               *-multimedia
                    description: Audio device
                    product: High Definition Audio Controller
                    vendor: NVIDIA Corporation
                    physical id: 0.1
                    bus info: pci@0000:01:00.1
                    version: a1
                    width: 32 bits
                    clock: 33MHz
                    capabilities: pm msi pciexpress bus_master cap_list
                    configuration: driver=snd_hda_intel latency=0
                    resources: irq:17 memory:f7afc000-f7afffff
            *-communication
                 description: Communication controller
                 product: 5 Series/3400 Series Chipset HECI Controller
                 vendor: Intel Corporation
                 physical id: 16
                 bus info: pci@0000:00:16.0
                 version: 06
                 width: 64 bits
                 clock: 33MHz
                 capabilities: pm msi bus_master cap_list
                 configuration: driver=mei latency=0
                 resources: irq:42 memory:f5fff000-f5fff00f
            *-usb:0
                 description: USB controller
                 product: 5 Series/3400 Series Chipset USB2 Enhanced Host Controller
                 vendor: Intel Corporation
                 physical id: 1a
                 bus info: pci@0000:00:1a.0
                 version: 06
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pm debug ehci bus_master cap_list
                 configuration: driver=ehci-pci latency=0
                 resources: irq:16 memory:f5ffe000-f5ffe3ff
            *-multimedia
                 description: Audio device
                 product: 5 Series/3400 Series Chipset High Definition Audio
                 vendor: Intel Corporation
                 physical id: 1b
                 bus info: pci@0000:00:1b.0
                 version: 06
                 width: 64 bits
                 clock: 33MHz
                 capabilities: pm msi pciexpress bus_master cap_list
                 configuration: driver=snd_hda_intel latency=0
                 resources: irq:43 memory:f5ff8000-f5ffbfff
            *-pci:1
                 description: PCI bridge
                 product: 5 Series/3400 Series Chipset PCI Express Root Port 1
                 vendor: Intel Corporation
                 physical id: 1c
                 bus info: pci@0000:00:1c.0
                 version: 06
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                 configuration: driver=pcieport
                 resources: irq:17 ioport:1000(size=4096) memory:f4000000-f41fffff ioport:f4200000(size=2097152)
            *-pci:2
                 description: PCI bridge
                 product: 5 Series/3400 Series Chipset PCI Express Root Port 2
                 vendor: Intel Corporation
                 physical id: 1c.1
                 bus info: pci@0000:00:1c.1
                 version: 06
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                 configuration: driver=pcieport
                 resources: irq:16 ioport:e000(size=4096) memory:f7e00000-f7efffff ioport:f4400000(size=2097152)
               *-ide
                    description: IDE interface
                    product: VT6415 PATA IDE Host Controller
                    vendor: VIA Technologies, Inc.
                    physical id: 0
                    bus info: pci@0000:04:00.0
                    version: 00
                    width: 32 bits
                    clock: 33MHz
                    capabilities: ide pm msi pciexpress bus_master cap_list rom
                    configuration: driver=pata_via latency=0
                    resources: irq:17 ioport:ec00(size=8) ioport:e880(size=4) ioport:e800(size=8) ioport:e480(size=4) ioport:e400(size=16) memory:f7ef0000-f7efffff
            *-pci:3
                 description: PCI bridge
                 product: 5 Series/3400 Series Chipset PCI Express Root Port 4
                 vendor: Intel Corporation
                 physical id: 1c.3
                 bus info: pci@0000:00:1c.3
                 version: 06
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                 configuration: driver=pcieport
                 resources: irq:19 ioport:2000(size=4096) memory:f7c00000-f7dfffff ioport:f4600000(size=2097152)
               *-multimedia
                    description: Multimedia video controller
                    product: CX23885 PCI Video and Audio Decoder
                    vendor: Conexant Systems, Inc.
                    physical id: 0
                    bus info: pci@0000:03:00.0
                    version: 04
                    width: 64 bits
                    clock: 33MHz
                    capabilities: pciexpress pm vpd msi bus_master cap_list
                    configuration: driver=cx23885 latency=0
                    resources: irq:19 memory:f7c00000-f7dfffff
            *-pci:4
                 description: PCI bridge
                 product: 5 Series/3400 Series Chipset PCI Express Root Port 5
                 vendor: Intel Corporation
                 physical id: 1c.4
                 bus info: pci@0000:00:1c.4
                 version: 06
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                 configuration: driver=pcieport
                 resources: irq:17 ioport:d000(size=4096) memory:f7b00000-f7bfffff ioport:f4f00000(size=1048576)
               *-network
                    description: Ethernet interface
                    product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
                    vendor: Realtek Semiconductor Co., Ltd.
                    physical id: 0
                    bus info: pci@0000:02:00.0
                    logical name: eth0
                    version: 06
                    serial: 20:cf:30:01:26:6c
                    size: 10Mbit/s
                    capacity: 1Gbit/s
                    width: 64 bits
                    clock: 33MHz
                    capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
                    configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-1.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
                    resources: irq:41 ioport:d800(size=256) memory:f4fff000-f4ffffff memory:f4ff8000-f4ffbfff memory:f7be0000-f7bfffff
            *-usb:1
                 description: USB controller
                 product: 5 Series/3400 Series Chipset USB2 Enhanced Host Controller
                 vendor: Intel Corporation
                 physical id: 1d
                 bus info: pci@0000:00:1d.0
                 version: 06
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pm debug ehci bus_master cap_list
                 configuration: driver=ehci-pci latency=0
                 resources: irq:23 memory:f5ffd000-f5ffd3ff
            *-pci:5
                 description: PCI bridge
                 product: 82801 PCI Bridge
                 vendor: Intel Corporation
                 physical id: 1e
                 bus info: pci@0000:00:1e.0
                 version: a6
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci subtractive_decode bus_master cap_list
                 resources: memory:f7f00000-f7ffffff
               *-network
                    description: Wireless interface
                    product: RT2800 802.11n PCI
                    vendor: Ralink corp.
                    physical id: 1
                    bus info: pci@0000:06:01.0
                    logical name: wlan0
                    version: 00
                    serial: 00:25:9c:f5:2d:0a
                    width: 32 bits
                    clock: 33MHz
                    capabilities: pm bus_master cap_list ethernet physical wireless
                    configuration: broadcast=yes driver=rt2800pci driverversion=3.8.0-34-generic firmware=0.34 ip=192.168.0.108 latency=64 link=yes maxlatency=4 mingnt=2 multicast=yes wireless=IEEE 802.11abgn
                    resources: irq:16 memory:f7ff0000-f7ffffff
            *-isa
                 description: ISA bridge
                 product: 5 Series Chipset LPC Interface Controller
                 vendor: Intel Corporation
                 physical id: 1f
                 bus info: pci@0000:00:1f.0
                 version: 06
                 width: 32 bits
                 clock: 33MHz
                 capabilities: isa bus_master cap_list
                 configuration: driver=lpc_ich latency=0
                 resources: irq:0
            *-ide:0
                 description: IDE interface
                 product: 5 Series/3400 Series Chipset 4 port SATA IDE Controller
                 vendor: Intel Corporation
                 physical id: 1f.2
                 bus info: pci@0000:00:1f.2
                 version: 06
                 width: 32 bits
                 clock: 66MHz
                 capabilities: ide pm bus_master cap_list
                 configuration: driver=ata_piix latency=0
                 resources: irq:21 ioport:ac00(size=8) ioport:a880(size=4) ioport:a800(size=8) ioport:a480(size=4) ioport:a400(size=16) ioport:a080(size=16)
            *-serial UNCLAIMED
                 description: SMBus
                 product: 5 Series/3400 Series Chipset SMBus Controller
                 vendor: Intel Corporation
                 physical id: 1f.3
                 bus info: pci@0000:00:1f.3
                 version: 06
                 width: 64 bits
                 clock: 33MHz
                 configuration: latency=0
                 resources: memory:f5ffc000-f5ffc0ff ioport:400(size=32)
            *-ide:1
                 description: IDE interface
                 product: 5 Series/3400 Series Chipset 2 port SATA IDE Controller
                 vendor: Intel Corporation
                 physical id: 1f.5
                 bus info: pci@0000:00:1f.5
                 version: 06
                 width: 32 bits
                 clock: 66MHz
                 capabilities: ide pm bus_master cap_list
                 configuration: driver=ata_piix latency=0
                 resources: irq:21 ioport:bc00(size=8) ioport:b880(size=4) ioport:b800(size=8) ioport:b480(size=4) ioport:b400(size=16) ioport:b080(size=16)
         *-scsi:0
              physical id: 2
              logical name: scsi0
              capabilities: emulated
            *-cdrom
                 description: DVD reader
                 product: iHOS104
                 vendor: ATAPI
                 physical id: 0.0.0
                 bus info: scsi@0:0.0.0
                 logical name: /dev/cdrom
                 logical name: /dev/sr0
                 version: WL0B
                 capabilities: removable audio dvd
                 configuration: ansiversion=5 status=nodisc
         *-scsi:1
              physical id: 3
              logical name: scsi1
              capabilities: emulated
            *-disk:0
                 description: ATA Disk
                 product: Corsair Force 3
                 physical id: 0.0.0
                 bus info: scsi@1:0.0.0
                 logical name: /dev/sda
                 version: 5.02
                 serial: 12196504000017400369
                 size: 55GiB (60GB)
                 capabilities: partitioned partitioned:dos
                 configuration: ansiversion=5 sectorsize=512 signature=0001735d
               *-volume:0
                    description: Linux swap volume
                    physical id: 1
                    bus info: scsi@1:0.0.0,1
                    logical name: /dev/sda1
                    version: 1
                    serial: ea8ff091-b744-48dd-8192-5f8ce231cab8
                    size: 7628MiB
                    capacity: 7628MiB
                    capabilities: primary bootable nofs swap initialized
                    configuration: filesystem=swap pagesize=4096
               *-volume:1
                    description: Extended partition
                    physical id: 2
                    bus info: scsi@1:0.0.0,2
                    logical name: /dev/sda2
                    size: 48GiB
                    capacity: 48GiB
                    capabilities: primary extended partitioned partitioned:extended
                  *-logicalvolume
                       description: Linux filesystem partition
                       physical id: 5
                       logical name: /dev/sda5
                       logical name: /
                       capacity: 48GiB
                       configuration: mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered state=mounted
            *-disk:1
                 description: ATA Disk
                 product: WDC WD20EARS-00M
                 vendor: Western Digital
                 physical id: 0.1.0
                 bus info: scsi@1:0.1.0
                 logical name: /dev/sdb
                 version: 51.0
                 serial: WD-WCAZA3254443
                 size: 1863GiB (2TB)
                 capabilities: gpt-1.00 partitioned partitioned:gpt
                 configuration: ansiversion=5 guid=7ed70e78-2e9c-4d1f-ba03-e38dc9f18aef sectorsize=512
               *-volume:0
                    description: EXT4 volume
                    vendor: Linux
                    physical id: 2
                    bus info: scsi@1:0.1.0,2
                    logical name: /dev/sdb2
                    version: 1.0
                    serial: de4e1357-549f-46dc-9b72-2d991e5c7464
                    size: 21GiB
                    capacity: 21GiB
                    capabilities: journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
                    configuration: created=2011-04-30 21:00:18 filesystem=ext4 label=home lastmountpoint=/media/mediacenter/home modified=2013-12-28 17:30:09 mounted=2013-12-28 17:30:09 state=clean
               *-volume:1
                    description: Linux swap volume
                    vendor: Linux
                    physical id: 3
                    bus info: scsi@1:0.1.0,3
                    logical name: /dev/sdb3
                    version: 1
                    serial: 636b5169-a53b-428c-ad0d-65aae178e7c9
                    size: 7627MiB
                    capacity: 7628MiB
                    capabilities: nofs swap initialized
                    configuration: filesystem=swap pagesize=4095
               *-volume:2
                    description: EXT4 volume
                    vendor: Linux
                    physical id: 4
                    bus info: scsi@1:0.1.0,4
                    logical name: /dev/sdb4
                    logical name: /data
                    version: 1.0
                    serial: 3029d8d6-9430-4624-ad32-49be8cbc01b5
                    size: 1815GiB
                    capabilities: journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
                    configuration: created=2011-04-30 21:00:20 filesystem=ext4 label=media lastmountpoint=/data modified=2014-01-05 13:16:10 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2014-01-05 13:16:10 state=mounted
    Thanks for your hints,
    Fabian

  2. #2
    Join Date
    Dec 2013
    Beans
    10

    Re: Kernel fails to boot

    The update manager just notified me that there is a new kernel.
    Downloading it right now, hope it fixes my problem. I will keep you posted

  3. #3
    Join Date
    Dec 2013
    Beans
    10

    Re: Kernel fails to boot

    I tried with kernel 3.11.0.15, still the exact same issue.
    When booting the kernel, the last thing i see is "loading initial ramdisk"
    When booting in recovery mode, the last thing is about ispnp (see previous screenshot)

  4. #4
    Join Date
    Feb 2011
    Location
    Coquitlam, B.C. Canada
    Beans
    1,422
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Kernel fails to boot

    There is a reasonable probability that your issue is still video related and that your other thread is not actually "solved" yet, but as Bucky Ball mentioned on that other thread, there are no details as to how it was "solved".

    What I am saying is that I suspect your kernel is actually booting and running fine, but is not interacting with the terminal. This happens to me often on my test computers, but I don't care since I normally only run servers and I just ssh into the computer when the terminal display doesn't work.

    So how to verify if your kernel is actually running or not? Can you "ping" the computer from another computer? If you don't have it installed already, you could install ssh server ( sudo apt-get install openssh-server ) and use an ssh client from another computer to attempt to connect to determine if the kernel is actually running (that is what I do). There might be simpler methods and/or workarounds, which perhaps someone else will mention.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  5. #5
    Join Date
    Dec 2013
    Beans
    10

    Re: Kernel fails to boot

    Thanks for your reply. I will test this evening when i get home

  6. #6
    Join Date
    Dec 2013
    Beans
    10

    Re: Kernel fails to boot

    I started a ping from an ancient ubuntu 9.10 laptop (good old times). I do not have a wired network connection so i did the test to the wireless card (hope this is not a problem, guess not)

    I did following tests (multiple times to be sure)
    Test 1
    - machine is running with old kernel - ping ok
    - reboot - ping stops
    - machine comes back up - ping ok

    Test 2
    - machine is running with old kernel - ping ok
    - reboot to new kernel- ping stops
    - machine boots up to a certain point - ping not ok
    - wait for a few minutes to be sure - ping still not ok

    Clearly, networking is not started in the background. Any other suggestions?

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