Public bug reported:
>From this morning the boot process on my laptop is no longer working.
The only relevant change from yesterday (when all was working fine) has
been a kernel update (from 3.2.0-39-generic to 3.2.0-40-generic).
When grub tries to boot the 3.2.0-40-generic kernel, I get only a black
screen (the screen seems really powered off).
After many tries and googling around, I found the following: if I change
the CMDLINE_LINUX_DEFAULT grub parameter (inside /etc/default/grub) from
the default value "quiet splash" to "nomodeset" the boot process works
but the screen has a lower resolution than before (from 1600x900 to
800x600).
This is not happening with the previous kernel version
(3.2.0-39-generic). Even with "quiet splash" enabled, all is working
fine with the correct resolution.
An important note: my disk is fully encrypted (actually the setup is LVM
+ encryption). So when the boot works fine, after the grub selection
screen I am asked to insert the passphrase for decrypting the whole file
system.
Further info:
daniele@ThinkPad:~$ lsb_release -rd
Description: Ubuntu 12.04.2 LTS
Release: 12.04
daniele@ThinkPad:~$ cat /etc/crypttab
# <target name> <source device> <key file> <options>
lvm_crypt UUID=46e9297f-56f8-4118-8542-600cbd6e0961 none luks
daniele@ThinkPad:~$ sudo cryptsetup status lvm_crypt
/dev/mapper/lvm_crypt is active and is in use.
type: LUKS1
cipher: aes-xts-plain
keysize: 512 bits
device: /dev/sda4
offset: 4096 sectors
size: 234090496 sectors
mode: read/write
daniele@ThinkPad:~$ sudo pvdisplay -m
--- Physical volume ---
PV Name /dev/dm-0
VG Name ubuntu
PV Size 111.62 GiB / not usable 2.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 28575
Free PE 0
Allocated PE 28575
PV UUID yXdajA-Qgok-O3FC-5ZEl-WKgI-Akhw-StRkuX
--- Physical Segments ---
Physical extent 0 to 2599:
Logical volume /dev/ubuntu/swap
Logical extents 0 to 2599
Physical extent 2600 to 8849:
Logical volume /dev/ubuntu/root
Logical extents 0 to 6249
Physical extent 8850 to 28574:
Logical volume /dev/ubuntu/home
Logical extents 0 to 19724
daniele@ThinkPad:~$ sudo lvdisplay -m
--- Logical volume ---
LV Name /dev/ubuntu/swap
VG Name ubuntu
LV UUID 1ejZXC-IJ32-Bx4L-UgAM-pxtc-gjxv-2LdIGE
LV Write Access read/write
LV Status available
# open 2
LV Size 10.16 GiB
Current LE 2600
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
--- Segments ---
Logical extent 0 to 2599:
Type linear
Physical volume /dev/dm-0
Physical extents 0 to 2599
--- Logical volume ---
LV Name /dev/ubuntu/root
VG Name ubuntu
LV UUID 2NGOW0-1B4x-BPI2-B0kc-RJ45-J523-ySGhla
LV Write Access read/write
LV Status available
# open 1
LV Size 24.41 GiB
Current LE 6250
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:2
--- Segments ---
Logical extent 0 to 6249:
Type linear
Physical volume /dev/dm-0
Physical extents 2600 to 8849
--- Logical volume ---
LV Name /dev/ubuntu/home
VG Name ubuntu
LV UUID IystsZ-R5nq-9yXD-naIk-1zqD-nqSL-ys2OyC
LV Write Access read/write
LV Status available
# open 1
LV Size 77.05 GiB
Current LE 19725
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:3
--- Segments ---
Logical extent 0 to 19724:
Type linear
Physical volume /dev/dm-0
Physical extents 8850 to 28574
daniele@ThinkPad:~$ mount | column -t
/dev/mapper/ubuntu-root on / type ext4
(rw,errors=remount-ro)
proc on /proc type proc
(rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs
(rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl
(rw)
none on /sys/kernel/debug type debugfs
(rw)
none on /sys/kernel/security type securityfs
(rw)
udev on /dev type devtmpfs
(rw,mode=0755)
devpts on /dev/pts type devpts
(rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs
(rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs
(rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs
(rw,nosuid,nodev)
/dev/sda3 on /boot type ext3
(rw)
/dev/mapper/ubuntu-home on /home type ext4
(rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc
(rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/daniele/.gvfs type
fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=daniele)
daniele@ThinkPad:~$
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: plymouth 0.8.2-2ubuntu31
ProcVersionSignature: Ubuntu 3.2.0-40.64-generic 3.2.40
Uname: Linux 3.2.0-40-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
Date: Wed Apr 10 09:37:48 2013
DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
MachineType: LENOVO 4236VMT
MarkForUpload: True
ProcCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-40-generic root=/dev/mapper/ubuntu-root
ro nomodeset
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-40-generic
root=/dev/mapper/ubuntu-root ro nomodeset
SourcePackage: plymouth
TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/28/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 83ET67WW (1.37 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4236VMT
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr83ET67WW(1.37):bd11/28/2011:svnLENOVO:pn4236VMT:pvrThinkPadT420:rvnLENOVO:rn4236VMT:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4236VMT
dmi.product.version: ThinkPad T420
dmi.sys.vendor: LENOVO
** Affects: plymouth (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise running-unity
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https://bugs.launchpad.net/bugs/1167189
Title:
boot failure with grub “quiet splash” + linux-image-3.2.0-40-generic +
full disk encryption
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