Questions tagged [boot]

Use this tag if you have trouble booting Ubuntu or you have questions about the bootup process.

9,394 questions with no upvoted or accepted answers
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Failed to start Snappy Daemon

Tried restarting my computer and while it's booting Ubuntu 18.04, it gets hung up after: [FAILED] Failed to start Snappy daemon, See 'systemct1 status snapd.service' for details,
9
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0answers
6k views

Ubuntu not booting: timed out waiting for device

My laptop has Ubuntu OS. While trying to boot it is giving me the following error: 97.255199 systemd[1]: timed out waiting for device #...
9
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1answer
6k views

Loop in “failed to start Snappy Daemon”

I'm not really experienced with Ubuntu and do not have a clue what to do in the current situation. My system currently has two boot states: Does not boot at all. Going to different console by ctrl+...
7
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0answers
1k views

RAID Drive on Dell Perc H310 RAID controller not recognized

So, I recently bought a Dell Perc H310 RAID controller to put in a Fujitsu Esprimo P700 E85+ Computer running Ubuntu Server 18.04.1 LTS. The Motherboard seems to have no UEFI, just a BIOS. From a ...
7
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1answer
3k views

A start job for dev-mapper-cryptswap.device is never ending

I again have problems with my swap. I using an encrypted swapfile. It worked until i rebooted my PC. When im trying to boot it is just showing this: I disabled my swap in the recovery mode for now. ...
6
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1answer
139 views

Mostly unable to boot when [ ***] A start job is running for… FOREVER!

A mostly clean install of Ubuntu 20.04 occasionally boots quickly and flawlessly, but almost always hangs during boot. Sometimes it will boot 1 out of 3 times, other times I reboot 10+ times, spending ...
6
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0answers
4k views

Warning: Failed to connect to lvmetad. Falling back to device scanning

I have been running Ubuntu 17 for a few months now, yesterday my network manager seems to have failed so I figured I would reboot and see if that solved it. When I boot I get the error in the title. ...
6
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0answers
2k views

end Kernel panic - not syncing error when trying to install Ubuntu 18.04

I'm trying to install Ubuntu 18.04 on my system, but whenever I select Install Ubuntu it gives me the photo below. The computer currently has Ubuntu 16.04 on it, but that was to make sure the computer ...
6
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1answer
2k views

How to enable early KMS on Ubuntu?

I have set /etc/default/grub to: GRUB_HIDDEN_TIMEOUT=0 GRUB_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_CMDLINE_LINUX_DEFAULT="" GRUB_CMDLINE_LINUX="" so that I get the full console text output ...
6
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1answer
2k views

Swap problems after upgrading from 14.04 to 16.06

After upgrading Ubuntu from 14.04 to 16.04 booting started to be very slow. It seems to be a problem with swap partitions. Bellow I attach some details. cat /var/log/boot.log [FAILED] Failed to ...
6
votes
1answer
1k views

Dell E6520 wont boot ubuntu unless plugged in on AC power

I've got a problem booting. Ubuntu 16.04 on my Dell E6520 laptop boots normally when plugged in. However, when booting on battery power it shuts down entirely. Sometimes it makes it as far as the ...
6
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0answers
3k views

16.04 Nvidia proprietary driver problems

On 16.04 xubuntu fresh install, I have an Nvidia Gtx 980 and an apple 30" 2560x1600 display, after installing proprietary nvidia drivers, I get two problems, the first, I can't log in during the ...
6
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0answers
4k views

Has the bootoption “acpi=noirq” any disadvantages in permanent use? Help me with debugging acpi pls

I am using Ubuntu for a while now and I have an average knowledge of it, I thought so ;), but have a problem I cant solve alone. I did a lot of research, but now I cant find an other solution and I ...
6
votes
1answer
493 views

Cairo-Dock crashed my Unity desktop, is this possible?

I'm still new to using Ubuntu and learning more and more each day. The other day I formatted my hard drive and wiped the Windows 8 partition (never use it) and re-installed my Ubuntu install to start ...
6
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1answer
11k views

Insmod error in grub: symbol not found:grub_realidt

I have a dual boot PC with Windows 7 and Ubuntu. I upgraded from 12.04 to 12.10 and then to 13.04 and since then I have not been able to boot because the PC goes into grub rescue with the error "File ...
6
votes
1answer
289 views

How can I refresh/reinstall/clear/set-to-default my bootup process?

I'm currently having a problem with my bootup process that is growing progressively worse as time goes on: While booting, it does a few minutes of hard-drive reading. During that, instead of showing ...
6
votes
4answers
687 views

Poor boot-screen after interrupted install

My install was interrupted because of a power cut. I recovered from it, using the command sudo apt-get dist-upgrade Now, I get a violet boot screen like normal, but the progress bar is shown as 4 ...
6
votes
3answers
5k views

After upgrading from13.10 to 14.04 screen on a laptop doesn't work but

First my laptop CPU/GPU is Intel Celeron N2815 (Bay Trail) and I am in dual boot with windows 8. I have upgraded from ubuntu 13.10 to 14.04 today through update manager. And after upgrading and after ...
5
votes
1answer
2k views

What is wrong with new upgrade

Recently i upgraded to Ubuntu20.04 Kernel: 5.4.0-26-generic This is the error msgs i get at every startup: [ 0.852002 ] Initramfs unpacking failed: Decoding failed [ 1.034932 ] integrity: Problem ...
5
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0answers
2k views

how to fix this ACPI BIOS errors and ACPI errors?

[ 1.536862] ACPI BIOS Error (bug): Could not resolve symbol [\_TZ.TZ00._TMP.ECPU], AE_NOT_FOUND (20190703/psargs-330) [ 1.536928] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error ...
5
votes
0answers
898 views

unrecoverable failure in required component org.gnome.Shell.desktop

A laptop with a fresh installation of 18.10 would not boot to the desktop. Subsequently, I started with options and viewed my logs (journalctl -p err | grep gnome) and saw this message produced for ...
5
votes
0answers
729 views

A stop job is running for Raise network interfaces (/1min 31s)

When I am trying to shutdown my pc running ubuntu 16.04.5 it will hang on this line: A stop job is running for Raise network interfaces (1s/1min 31s) This is my /etc/network/interfaces file: # This ...
5
votes
0answers
6k views

Ubuntu 18.04 Boot hangs at PKCS#7 signature not signed with a trusted key

I had a working 16.04 working perfectly (but no bumblebee) and then upgraded to 18.04. Gnome was very laggy so I installed Unity and lightdm but it was still laggy. So I thought something was wrong ...
5
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0answers
865 views

Can suddenly only boot with “nomodeset” (radeon, 16.04)

As of yesterday, I can only boot with the kernel option nomodeset. The only thing that happened before normal shutdown was an upgrade: Start-Date: 2016-11-26 00:09:51 Commandline: apt-get -y dist-...
5
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0answers
9k views

How to Resolve this grub-efi-ia32 error in Asus T100 of 16.04?

I receive this message when installing Ubuntu 14.04 or 16.04 on Asus T100: The 'grub-efi-ia32' package failed to install into /target/. Without the GRUB boot loader, the installed system will not ...
5
votes
0answers
142 views

Ubuntu can't boot with ACPI on - Samsung NP700Z4AH Notebook - Radeon HD 6750M

I've installed Ubuntu 16.04 in a Samsung Notebook but can't boot without disabling acpi. I appended acpi=off to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub and updated grub options with update-...
5
votes
1answer
215 views

Recover Ubuntu 14.04 Encrypted Install

I have an encrypted install (Full drive, not only home directory) of Ubuntu 14.04 on a 1TB SSD. I do know the passkey to unencrypt everything. It's just a matter of finding the files now. Here's what ...
5
votes
1answer
1k views

16.04 - Slow Kernel Boot (LVM issue)

After upgrading to Ubuntu 16.04 my system boot slow down consistently To analyze the cause I used this command. systemd-analyze plot > boot.xml google-chrome ./boot.xml I have found out ...
5
votes
0answers
185 views

Where in the server install does it mount /cdrom?

If I try to boot the server installer iso as a CD - whether burnt directly to a CD, mounted in a virtual machine like an optical drive, or expanded onto a USB/SD - it works great. If I try to grub ...
5
votes
1answer
697 views

Ubuntu wifi usually not working on boot, needs kernel module restart

After installing Ubuntu on my netbook, an F205TA, wifi seems to be not working correctly. Usually wifi is not working after boot, but starts working after one or more tries of: sudo modprobe -r ...
5
votes
2answers
13k views

target filesystem doesn't have requested /sbin/init. /bin/sh: 0 : Can't open splash - Ubuntu 15.04

I have an Ubuntu 15.04 machine. I installed docker in this machine. After installation I was trying to run the test image of docker which comes by default. But it did not ran. Then I tried to shutdown ...
5
votes
1answer
5k views

accessing data on encrypted drive

Please be patient with me as I am still learning how to do anything Linux, starting with Ubuntu. I have installed Ubuntu 14.04 and had some issues playing around with it and petty much now it won't ...
5
votes
0answers
10k views

Error: environment block too small. Press any key to continue

I am running Ubuntu 15.04 and getting this error in grub menu Error: environment block too small. Press any key to continue... I went through this AskUbuntu Post about this problem but unable to ...
5
votes
1answer
4k views

Ubuntu server (VM) hangs after “Begin: Running /scripts/init-bottom … done”

My bootup hangs, as seen in the image below. (there has been an update. check the edit below) When I press escape, it tabs to this screen : The whole story : This VM ubuntu server is used for a ...
5
votes
0answers
2k views

boot XEN under UEFI-only BIOS

Is there a way to get XEN 4.4 booting from UEFI mode BIOS? My AMD64bit laptop does not support direct CSM/legacy boots. A nasty workaround has been to boot from a specially made USB pendrive with ...
5
votes
4answers
8k views

tpm_tis Operation Timed out when booting 14.04 LTS

Since upgrading from 13.10 to 14.04 (with do-release-upgrade) my computer (Sony vgn-sz1vp) hangs for 4 minutes when booting. [ 1.015598] tpm_tis 00:06: 1.2 TPM (device-id 0xB, rev-id 16) [ 1....
5
votes
2answers
2k views

Distorted graphics on start up

So I am using dual monitors and every time I boot up my machine after entering my password to login, both screens show distorted graphics which eventually go away. I am on Ubuntu 12.10 the OS type is ...
5
votes
2answers
992 views

How to boot muted?

How can we boot muted as sometimes booting and start up sounds will disturb people around in a silent environment (libraries etc.)? I know I can remove the start up sound effects but that's not I ...
4
votes
0answers
90 views
+50

cryptsetup: waiting for encrypted source device /swapfile, fstab empty

On the bootscreen I get the message: cryptsetup: waiting for encrypted source device /swapfile... which then leaves me hanging for about 2 minutes followed by Initramfs unpacking failed: Decoding ...
4
votes
0answers
79 views

Ubuntu 18.04 fails to boot after upgrade to grub-efi-amd64

I'm a company senior admin, we run a lot of Ubuntu 18.04 server on AMD. In the last 3-4 months we've had an issue with a few systems becoming unbootable during the application of OS upgrades from ...
4
votes
0answers
305 views

Unable to passthrough primary gpu in triple gpu setup. Ubuntu hangs on boot

I have recently built a system with 3 GPU's. Im trying to passthrough two gpu's to use them in vm's and use the third as host GPU. I have succsessfully been able to passthrough the second slot GPU ...
4
votes
0answers
797 views

Unable to install ubuntu: “Couldn't get size”

I want to completely get rid of Microsoft (thus Windows), and I really love the Ubuntu operating system and applications. I had Ubuntu installed before on my computer, and it worked perfectly. For ...
4
votes
2answers
298 views

Ubuntu 19.04 server doesn't boot, but 19.04 desktop does

I'm trying to install Ubuntu 19.04 on my ThinkPad T420. I would like to install the server edition, so I can configure a custom GUI. I don't want GNOME, and I don't want the trouble of manually ...
4
votes
1answer
628 views

Ubuntu 18.04 -> 18.10 doesn't boot

After an upgrade from 18.04 to 18.10, my ubuntu does not boot and just losing the signal after the grub. I cat login with "nomodeset" but then the resolution is lower and can't be changed. Here are ...
4
votes
1answer
2k views

Ubuntu 18.04 boot time is very slow (userspace taking a lot of time)

I have dual booted Ubuntu along with Windows 10. I have a SSD+HDD combo where Windows is installed on SSD and Ubuntu on HDD. I've tried reinstalling Ubuntu but the problem of large boot time still ...
4
votes
5answers
9k views

Black screen after rebooting following upgrade to 18.10

To upgrade from 18.04 to 18.10 I executed the following commands: "sudo apt-get dist-upgrade" and "sudo do-release-upgrade" Upgrade proceeded normally until the system reached the reboot phase. ...
4
votes
0answers
49 views

New to ubuntu, not sure what to call this but please help

I recently switched to Ubuntu and this is the second time I have faced this problem. The first time I reinstalled ubuntu and it was fine, because at the time I hardly had anything of value downloaded. ...
4
votes
2answers
230 views

XPS 15 9550 fails to suspend throughout a single boot on 17.10

I have a Dell XPS 15 9550 (using the latest BIOS 1.7.0) and am running Ubuntu 17.10 using Wayland (I also have Windows 10 dual booted). The issue is that sometimes (about half the time) when I boot ...
4
votes
1answer
776 views

Ubuntu 18.04 Emergency mode problem

When I tried to start my computer, it boots in emergency mode and shows some problem. I don't know about these problem. if I run 'exit' command that again brings back the emergency mode. This is shown ...
4
votes
0answers
3k views

Slow boot on 18.04 LTS

I am new to Ubuntu just installed it today, Ubuntu is taking to much time to boot like 2 minutes I found some command named systemd-analyze blame so I got output like this 15.267s dev-mapper-ubuntu\...

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