How to get date/time of these events:
- last system hibernate / suspend
- last system resume
I have Ubuntu 16.04 LTS with mate desktop and occasionally when I try to resume after suspend it fails so that the screen is black and it does not respond to keyboard / mouse.
From another machine (A) I can still take a ssh connection to this black screen machine (B). Using this ssh connection from machine A I have tried to pm-suspend the machine B. Suspend seems to work, but again resume after pm-suspend fails: Machine B screen remains black or white and it does not respond to keyboard / mouse. Ssh connection seems to work always after resume.
After failed resume I have tried following suspend commands with quirks (see man pm-suspend):
pm-suspend
pm-suspend --quirk-dpms-on
pm-suspend --quirk-dpms-suspend
pm-suspend --quirk-s3-bios
pm-suspend --quirk-s3-mode
pm-suspend --quirk-vbe-post
pm-suspend --quirk-vga-mode-3
But nothing helps.
Finally I have run shutdown from machine A ssh connection to get machine B down and restarted. After restart screen works normally.
1) Are there any other possibilities to get the desktop visible with the help of this ssh connection e.g. to restart services etc in order to avoid machine B shutdown?
2) Graphics card is: GeForce GTX 750 1GB. Are there any specific quirks or quirk combinations for this card?
I have a HP Pavilion G7 laptop with UEFI support and a 250GB GPT SSD disk. Laptop initially had Windows 8 installed, but later I made a Windows 10 clean install and reserved some empty space for linux.
Now I want to have Win10 & Ubuntu16 Mate 16.04 LTS dualboot, LUKS encrypted disks with LVM.
This kind of dualboot confuguration with LUKS and LVM is not possible with Ubuntu Mate GUI installer, but I found following instructions to follow (tested for Ubuntu 13.04):
How can I install Ubuntu encrypted with LUKS with dual-boot?
I tried to follow these instructions but always when booting I cannot open the encrypted disk because cryptsetup fails.
Here is my procedure, numbering is same as in instructions:
- Boot from an Ubuntu live DVD or USB stick, and select "Try Ubuntu".
Create partitions using GParted included in the live disk. GParted. Created 2 partitions: boot and data for LUKS. Windows esp will be used for Ubuntu also.
(parted) print list Model: ATA Samsung SSD 850 (scsi) Disk /dev/sda: 250GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 473MB 472MB ntfs Basic data partition hidden, diag 2 473MB 578MB 105MB fat32 EFI system partition boot, esp 3 578MB 595MB 16.8MB Microsoft reserved partition msftres 4 595MB 123GB 123GB ntfs Basic data partition msftdata 5 123GB 124GB 835MB ntfs hidden, diag 6 124GB 125GB 524MB ext4 NotUsed 7 125GB 126GB 1049MB ext4 linux-boot 8 126GB 250GB 124GB linux-data ubuntu-mate@ubuntu-mate:~$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 232.9G 0 disk ├─sda1 8:1 0 450M 0 part ├─sda2 8:2 0 100M 0 part (This is Windows esp) ├─sda3 8:3 0 16M 0 part ├─sda4 8:4 0 114.4G 0 part ├─sda5 8:5 0 796M 0 part ├─sda6 8:6 0 500M 0 part ├─sda7 8:7 0 1000M 0 part (boot) └─sda8 8:8 0 115.7G 0 part (LUKS)format partitions sda7, sda8
Create a LUKS container using these commands
sudo cryptsetup luksFormat /dev/sda8 sudo cryptsetup luksOpen /dev/sda8 pv_dataIt is critical to properly initialize the new LUKS container
ubuntu-mate@ubuntu-mate:~$ sudo dd if=/dev/zero of=/dev/mapper/pv_data bs=16M dd: error writing '/dev/mapper/pv_data': No space left on device 7469+0 records in 7468+0 records out 125303783424 bytes (125 GB, 117 GiB) copied, 381.69 s, 328 MB/sInside the mounted LUKS container, create an LVM physical volume, a volume group and two logical volumes. The first logical volume will be mounted at /, and the second one will be used as swap.
ubuntu-mate@ubuntu-mate:~$ sudo pvcreate /dev/mapper/pv_data Physical volume "/dev/mapper/pv_data" successfully created ubuntu-mate@ubuntu-mate:~$ sudo vgcreate vg_data /dev/mapper/pv_data Volume group "vg_data" successfully created ubuntu-mate@ubuntu-mate:~$ sudo lvcreate -n lv_swap -L 12g vg_data Logical volume "lv_swap" created. ubuntu-mate@ubuntu-mate:~$ sudo lvcreate -n lv_root -L 80g vg_data Logical volume "lv_root" created. ubuntu-mate@ubuntu-mate:~$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 232.9G 0 disk ... └─sda8 8:8 0 115.7G 0 part └─pv_data 252:0 0 115.7G 0 crypt ├─vg_data-lv_swap 252:1 0 12G 0 lvm └─vg_data-lv_root 252:2 0 80G 0 lvmCreate filesystems for the two logical volumes
ubuntu-mate@ubuntu-mate:~$ sudo mkfs.ext4 /dev/mapper/vg_data-lv_root mke2fs 1.42.13 (17-May-2015) Creating filesystem with 20971520 4k blocks and 5242880 inodes Filesystem UUID: 1cbd1ea6-fa20-41f6-a870-5c159301bee4 Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done ubuntu-mate@ubuntu-mate:~$ sudo mkswap /dev/mapper/vg_data-lv_swap Setting up swapspace version 1, size = 12 GiB (12884897792 bytes) no label, UUID=d665e5d7-b81f-4078-a5d5-bb1dd137fce2Install Ubuntu using the graphical installer, choosing manual partitioning.
Assign:
/to/dev/mapper/vg_data-lv_root,/bootto/dev/sda7, swap to/dev/mapper/vg_data-lv_swapmark other partitions "do not use" except sda7 boot, lv_root, lv_swap, sda2 efi windows boot manager
Select device for bootloader installation to
/dev/sdaOnce the graphical installer is finished, select "continue testing" and open a terminal.
Find the UUID of the LUKS partitions:
/dev/sda8ubuntu-mate@ubuntu-mate:~$ sudo blkid /dev/sda1: LABEL="Recovery" UUID="FABE4708BE46BCBF" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="69ee7fd0-ed56-41b2-b974-b76647cb98d5" /dev/sda2: UUID="9A47-7CB4" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="3cfbb43a-3bfd-48ac-b673-109f469c4d72" /dev/sda4: UUID="82324D05324D0021" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="342a1cfb-8587-4dbc-a180-4872aa23aff5" /dev/sda5: UUID="D606B52306B50611" TYPE="ntfs" PARTUUID="6bebe835-96b9-422e-b9c1-baf69ae085b3" /dev/sda6: UUID="341a01d8-dcb7-4c51-99aa-22a84d53054b" TYPE="ext4" PARTLABEL="NotUsed" PARTUUID="f2524ea7-8736-4998-8705-5e9d22c42b3c" /dev/sda7: UUID="d0033e81-c785-4efc-a0d3-1128b7a99792" TYPE="ext4" PARTLABEL="linux-boot" PARTUUID="08e453f9-84ca-48b0-a26f-915f2462c578" /dev/sdb1: LABEL="UBUNTU-MATE" UUID="8EDE-65EA" TYPE="vfat" PARTLABEL="Microsoft Basic Data" PARTUUID="2c0f92b3-5d67-45c7-bc1b-ce8a1a284015" /dev/loop0: TYPE="squashfs" /dev/sda8: UUID="ec4c6b1d-0bf1-41d4-81ec-754987a5532f" TYPE="crypto_LUKS" PARTLABEL="linux-data" PARTUUID="18bf1837-1dda-477a-9007-e3478e12f565" /dev/sdc1: LABEL="FAT32GB" UUID="FE56-878C" TYPE="vfat" PARTUUID="58ee1847-01" /dev/mapper/pv_data: UUID="11kz5r-WtT9-c2oU-sDrB-ObWm-OCiP-t0JG9c" TYPE="LVM2_member" /dev/mapper/vg_data-lv_swap: UUID="d665e5d7-b81f-4078-a5d5-bb1dd137fce2" TYPE="swap" /dev/mapper/vg_data-lv_root: UUID="57c480e3-59c7-4203-ac5c-2a08075fd71c" TYPE="ext4" /dev/dm-1: UUID="d665e5d7-b81f-4078-a5d5-bb1dd137fce2" TYPE="swap" /dev/sda3: PARTLABEL="Microsoft reserved partition" PARTUUID="dfbb8924-81a1-4646-9baa-3a4977641f5e"Mount the appropriate devices to the appropriate locations in /mnt, and chroot into it:
sudo mount /dev/mapper/vg_data-lv_root /mnt sudo mount /dev/sda7 /mnt/boot sudo mount --bind /dev /mnt/dev sudo chroot /mntCreate a file named /etc/crypttab in the chrooted environment:
root@ubuntu-mate:/# cat /etc/crypttab # <target name> <source device> <key file> <options> pv_data UUID=ec4c6b1d-0bf1-41d4-81ec-754987a5532f none luks,retry=1,lvm=vg_dataCreate a file named /etc/initramfs-tools/conf.d/cryptroot in the chrooted environment:
root@ubuntu-mate:/# cat /etc/initramfs-tools/conf.d/cryptroot CRYPTROOT=target=pv_data,source=/dev/disk/by-uuid/ec4c6b1d-0bf1-41d4-81ec-754987a5532fRun the following command in the chrooted environment:
root@ubuntu-mate:/# update-initramfs -k all -c update-initramfs: Generating /boot/initrd.img-4.4.0-38-generic cat: /proc/cmdline: No such file or directory update-initramfs: Generating /boot/initrd.img-4.4.0-31-generic cat: /proc/cmdline: No such file or directoryAre these errors critical?
Edit the file named /etc/default/grub in the chrooted envirnoment:
root@ubuntu-mate:/# cat /etc/default/grub # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration' GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" #GRUB_CMDLINE_LINUX="" GRUB_CMDLINE_LINUX="cryptopts=target=pv_data,source=/dev/disk/by-uuid/ec4c6b1d-0bf1-41d4-81ec-754987a5532f,lvm=vg_data" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" root@ubuntu-mate:/#Run the following command in the chrooted environment:
root@ubuntu-mate:/# update-grub Generating grub configuration file ... ... /proc/devices: fopen failed: No such file or directory Found linux image: /boot/vmlinuz-4.4.0-38-generic Found initrd image: /boot/initrd.img-4.4.0-38-generic /proc/devices: fopen failed: No such file or directory device node not found /proc/devices: fopen failed: No such file or directory device node not found Found linux image: /boot/vmlinuz-4.4.0-31-generic Found initrd image: /boot/initrd.img-4.4.0-31-generic /proc/devices: fopen failed: No such file or directory /proc/devices: fopen failed: No such file or directory /proc/devices: fopen failed: No such file or directory device node not found ... device node not found /proc/devices: fopen failed: No such file or directory device node not found Found memtest86+ image: /memtest86+.elf Found memtest86+ image: /memtest86+.bin grep: /proc/mounts: No such file or directory Cannot find list of partitions! (Try mounting /sys.) done root@ubuntu-mate:/#Dozens of
device node not founderrors removed here, is it normal that update-grub produces this many errors?Reboot and boot into the encrypted Ubuntu. You should be prompted for a password.
During the reboot, Windows 10 starts to boot by default. If I hit Esc and select Ubuntu from list, Ubuntu starts booting but
cryptsetupfails with following error messages:cryptsetup: cryptsetup failed, bad password or options? /scripts/local-top/cryptroot: line:1 /sbin/cryptsetup: not found.
What's the reason for this failure and how can I fix it?
/etc/modules file is empty. Should there be something?