Ubuntu installation stuck at random crng init done

I have installed Ubuntu 16.04 ony Lenovo 3g hhd, 4 g ram. It all went smoothly until it gets stuck on the boot process with "random crng init done". Help with this issue is greatly appreciated.

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

Do you have a SD card plugged in? Try removing it if there is one inserted

– Paul Tanzini
Mar 24 '18 at 22:12

I'm getting this issue on my raspberry pi (arm64) with kernel 4.9.59

– Brady Dean
Mar 25 '18 at 21:43

add a comment |

I have installed Ubuntu 16.04 ony Lenovo 3g hhd, 4 g ram. It all went smoothly until it gets stuck on the boot process with "random crng init done". Help with this issue is greatly appreciated.

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

Do you have a SD card plugged in? Try removing it if there is one inserted

– Paul Tanzini
Mar 24 '18 at 22:12

I'm getting this issue on my raspberry pi (arm64) with kernel 4.9.59

– Brady Dean
Mar 25 '18 at 21:43

add a comment |

I have installed Ubuntu 16.04 ony Lenovo 3g hhd, 4 g ram. It all went smoothly until it gets stuck on the boot process with "random crng init done". Help with this issue is greatly appreciated.

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

I have installed Ubuntu 16.04 ony Lenovo 3g hhd, 4 g ram. It all went smoothly until it gets stuck on the boot process with "random crng init done". Help with this issue is greatly appreciated.

16.04

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

asked Mar 24 '18 at 18:37

Victor Sanchez

2612

Do you have a SD card plugged in? Try removing it if there is one inserted

– Paul Tanzini
Mar 24 '18 at 22:12

I'm getting this issue on my raspberry pi (arm64) with kernel 4.9.59

– Brady Dean
Mar 25 '18 at 21:43

add a comment |

Do you have a SD card plugged in? Try removing it if there is one inserted

– Paul Tanzini
Mar 24 '18 at 22:12

I'm getting this issue on my raspberry pi (arm64) with kernel 4.9.59

– Brady Dean
Mar 25 '18 at 21:43

Do you have a SD card plugged in? Try removing it if there is one inserted

– Paul Tanzini
Mar 24 '18 at 22:12

I'm getting this issue on my raspberry pi (arm64) with kernel 4.9.59

– Brady Dean
Mar 25 '18 at 21:43

add a comment |

4 Answers
4

active

oldest

votes

It's a kernel bug that can happen with different kernel.

"apt-get install rng-tools" run as root in a terminal should work.

answered May 12 '18 at 13:47

Giulio G

412

This also helped me on Ubuntu 18.04 when the kernel was getting stuck at "random: crng init done" for 90 sec before boot would continue. I have no idea if the following is really necessary, but after installing rng-tools, I also updated initramfs and grub: sudo update-initramfs -u and sudo update-grub. More info on rng-tools is here: wiki.archlinux.org/index.php/Rng-tools

– MDMower
Jul 8 '18 at 20:42

add a comment |

At boot, the kernel waits for mouse movements to initialize the random number generator.

Kernel messages on boot:

sudo dmesg | less

The problem message:

kernel: random: crng init done

The solution:

sudo apt install haveged

sudo systemctl enable haveged

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

answered Aug 10 '18 at 0:44

virusmxa

211

What is your basis that the kernel waits for mouse movements to init the random number generator? There are cases where this may not be the cause (non-graphical environments for example where there is no GUI or Mouse interaction) (and I've had this happen twice in the past few months on low-spec servers)

– Thomas Ward♦
Aug 10 '18 at 20:22

add a comment |

I faced the same issue, and the fixes suggested here did not work. It was a broken link to a swap partition on my USB. It can be fixed using update-initramfs -uk all
More details can be found at https://askubuntu.com/a/1084738/881810

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

add a comment |

This issue can also be caused by combining non-related btrfs partitions on 1 system and booting with a kernel and init-system that doesn't know about this.

I had a system with a disk for my data and another one for my OS. Both used btrfs and although the system worked fine, I couldn't boot from a USB-stick. After (physically) detaching the data-disk it booted fine from USB.

Depending on what you want to achieve and how much time you want to spend on it there are multiple solutions available if your are in a similar situation. From easy to hard:

Don't boot from any other medium (ignoring the problem)

Backup your data of the extra btrfs-partition, overwrite the partition with another type of filesystem (e.g. ext4) and place your data back on this new filesystem.

Merge the 2 btrfs partitions into 1 filesystem. This can take a lot of work, and it's easy to make a mistake here. Double-check the newest version of the btrfs docs before you do this.

answered Feb 21 at 0:35

Garo

add a comment |

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4 Answers
4

active

oldest

votes

4 Answers
4

active

oldest

votes

It's a kernel bug that can happen with different kernel.

"apt-get install rng-tools" run as root in a terminal should work.

answered May 12 '18 at 13:47

Giulio G

412

This also helped me on Ubuntu 18.04 when the kernel was getting stuck at "random: crng init done" for 90 sec before boot would continue. I have no idea if the following is really necessary, but after installing rng-tools, I also updated initramfs and grub: sudo update-initramfs -u and sudo update-grub. More info on rng-tools is here: wiki.archlinux.org/index.php/Rng-tools

– MDMower
Jul 8 '18 at 20:42

add a comment |

It's a kernel bug that can happen with different kernel.

"apt-get install rng-tools" run as root in a terminal should work.

answered May 12 '18 at 13:47

Giulio G

412

This also helped me on Ubuntu 18.04 when the kernel was getting stuck at "random: crng init done" for 90 sec before boot would continue. I have no idea if the following is really necessary, but after installing rng-tools, I also updated initramfs and grub: sudo update-initramfs -u and sudo update-grub. More info on rng-tools is here: wiki.archlinux.org/index.php/Rng-tools

– MDMower
Jul 8 '18 at 20:42

add a comment |

It's a kernel bug that can happen with different kernel.

"apt-get install rng-tools" run as root in a terminal should work.

answered May 12 '18 at 13:47

Giulio G

412

It's a kernel bug that can happen with different kernel.

"apt-get install rng-tools" run as root in a terminal should work.

answered May 12 '18 at 13:47

Giulio G

412

answered May 12 '18 at 13:47

Giulio G

412

answered May 12 '18 at 13:47

Giulio G

412

answered May 12 '18 at 13:47

Giulio G

412

This also helped me on Ubuntu 18.04 when the kernel was getting stuck at "random: crng init done" for 90 sec before boot would continue. I have no idea if the following is really necessary, but after installing rng-tools, I also updated initramfs and grub: sudo update-initramfs -u and sudo update-grub. More info on rng-tools is here: wiki.archlinux.org/index.php/Rng-tools

– MDMower
Jul 8 '18 at 20:42

add a comment |

This also helped me on Ubuntu 18.04 when the kernel was getting stuck at "random: crng init done" for 90 sec before boot would continue. I have no idea if the following is really necessary, but after installing rng-tools, I also updated initramfs and grub: sudo update-initramfs -u and sudo update-grub. More info on rng-tools is here: wiki.archlinux.org/index.php/Rng-tools

– MDMower
Jul 8 '18 at 20:42

This also helped me on Ubuntu 18.04 when the kernel was getting stuck at "random: crng init done" for 90 sec before boot would continue. I have no idea if the following is really necessary, but after installing rng-tools, I also updated initramfs and grub: sudo update-initramfs -u and sudo update-grub. More info on rng-tools is here: wiki.archlinux.org/index.php/Rng-tools

– MDMower
Jul 8 '18 at 20:42

add a comment |

At boot, the kernel waits for mouse movements to initialize the random number generator.

Kernel messages on boot:

sudo dmesg | less

The problem message:

kernel: random: crng init done

The solution:

sudo apt install haveged

sudo systemctl enable haveged

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

answered Aug 10 '18 at 0:44

virusmxa

211

What is your basis that the kernel waits for mouse movements to init the random number generator? There are cases where this may not be the cause (non-graphical environments for example where there is no GUI or Mouse interaction) (and I've had this happen twice in the past few months on low-spec servers)

– Thomas Ward♦
Aug 10 '18 at 20:22

add a comment |

At boot, the kernel waits for mouse movements to initialize the random number generator.

Kernel messages on boot:

sudo dmesg | less

The problem message:

kernel: random: crng init done

The solution:

sudo apt install haveged

sudo systemctl enable haveged

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

answered Aug 10 '18 at 0:44

virusmxa

211

What is your basis that the kernel waits for mouse movements to init the random number generator? There are cases where this may not be the cause (non-graphical environments for example where there is no GUI or Mouse interaction) (and I've had this happen twice in the past few months on low-spec servers)

– Thomas Ward♦
Aug 10 '18 at 20:22

add a comment |

At boot, the kernel waits for mouse movements to initialize the random number generator.

Kernel messages on boot:

sudo dmesg | less

The problem message:

kernel: random: crng init done

The solution:

sudo apt install haveged

sudo systemctl enable haveged

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

answered Aug 10 '18 at 0:44

virusmxa

211

At boot, the kernel waits for mouse movements to initialize the random number generator.

Kernel messages on boot:

sudo dmesg | less

The problem message:

kernel: random: crng init done

The solution:

sudo apt install haveged

sudo systemctl enable haveged

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

answered Aug 10 '18 at 0:44

virusmxa

211

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

edited Aug 10 '18 at 3:27

Stephen Rauch

1,1546716

answered Aug 10 '18 at 0:44

virusmxa

211

answered Aug 10 '18 at 0:44

virusmxa

211

answered Aug 10 '18 at 0:44

virusmxa

211

What is your basis that the kernel waits for mouse movements to init the random number generator? There are cases where this may not be the cause (non-graphical environments for example where there is no GUI or Mouse interaction) (and I've had this happen twice in the past few months on low-spec servers)

– Thomas Ward♦
Aug 10 '18 at 20:22

add a comment |

What is your basis that the kernel waits for mouse movements to init the random number generator? There are cases where this may not be the cause (non-graphical environments for example where there is no GUI or Mouse interaction) (and I've had this happen twice in the past few months on low-spec servers)

– Thomas Ward♦
Aug 10 '18 at 20:22

What is your basis that the kernel waits for mouse movements to init the random number generator? There are cases where this may not be the cause (non-graphical environments for example where there is no GUI or Mouse interaction) (and I've had this happen twice in the past few months on low-spec servers)

– Thomas Ward♦
Aug 10 '18 at 20:22

add a comment |

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

add a comment |

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

add a comment |

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

answered Oct 18 '18 at 3:08

Dushyant MAHADIK

114

add a comment |

This issue can also be caused by combining non-related btrfs partitions on 1 system and booting with a kernel and init-system that doesn't know about this.

Depending on what you want to achieve and how much time you want to spend on it there are multiple solutions available if your are in a similar situation. From easy to hard:

Don't boot from any other medium (ignoring the problem)

Backup your data of the extra btrfs-partition, overwrite the partition with another type of filesystem (e.g. ext4) and place your data back on this new filesystem.

Merge the 2 btrfs partitions into 1 filesystem. This can take a lot of work, and it's easy to make a mistake here. Double-check the newest version of the btrfs docs before you do this.

answered Feb 21 at 0:35

Garo

add a comment |

This issue can also be caused by combining non-related btrfs partitions on 1 system and booting with a kernel and init-system that doesn't know about this.

Depending on what you want to achieve and how much time you want to spend on it there are multiple solutions available if your are in a similar situation. From easy to hard:

Don't boot from any other medium (ignoring the problem)

Backup your data of the extra btrfs-partition, overwrite the partition with another type of filesystem (e.g. ext4) and place your data back on this new filesystem.

Merge the 2 btrfs partitions into 1 filesystem. This can take a lot of work, and it's easy to make a mistake here. Double-check the newest version of the btrfs docs before you do this.

answered Feb 21 at 0:35

Garo

add a comment |

This issue can also be caused by combining non-related btrfs partitions on 1 system and booting with a kernel and init-system that doesn't know about this.

Depending on what you want to achieve and how much time you want to spend on it there are multiple solutions available if your are in a similar situation. From easy to hard:

Don't boot from any other medium (ignoring the problem)

Backup your data of the extra btrfs-partition, overwrite the partition with another type of filesystem (e.g. ext4) and place your data back on this new filesystem.

Merge the 2 btrfs partitions into 1 filesystem. This can take a lot of work, and it's easy to make a mistake here. Double-check the newest version of the btrfs docs before you do this.

answered Feb 21 at 0:35

Garo

This issue can also be caused by combining non-related btrfs partitions on 1 system and booting with a kernel and init-system that doesn't know about this.

Depending on what you want to achieve and how much time you want to spend on it there are multiple solutions available if your are in a similar situation. From easy to hard:

Don't boot from any other medium (ignoring the problem)

Backup your data of the extra btrfs-partition, overwrite the partition with another type of filesystem (e.g. ext4) and place your data back on this new filesystem.

Merge the 2 btrfs partitions into 1 filesystem. This can take a lot of work, and it's easy to make a mistake here. Double-check the newest version of the btrfs docs before you do this.

answered Feb 21 at 0:35

Garo

answered Feb 21 at 0:35

Garo

answered Feb 21 at 0:35

Garo

answered Feb 21 at 0:35

Garo

add a comment |

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