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Questions tagged [lockup]

57 questions
21
votes
7 answers

watchdog: BUG: soft lockup - CPU#6 stuck for 23s

I tried every solutions I found on google ... I can't find out why my server is crashing ... Aug 5 17:11:08 kernel: [ 2300.084576] watchdog: BUG: soft lockup - CPU#6 stuck for 23s! [VM Thread:4054] Aug 5 17:11:08 kernel: [ 2300.084578] Modules…
Dr.Blamo
  • 313
11
votes
1 answer

rcu_sched self-detected stall on CPU + watchdog: BUG: soft lockup - CPU#3 stuck for 22s

Being unable to ssh into a machine I connected it to a monitor and found the following: The machine is running Ubuntu Server 18.04 LTS and is a first generation 8 core Ryzen 1700. I've restarted the machine since and it works fine but am not sure…
Greg
  • 298
5
votes
1 answer

After upgrading to 16.04 keyboard and mouse lock up at random times

After upgrading to 16.04 (from 14.04) keyboard and mouse lock up at random times, and then the only thing that I can do is to manually power cycle the machine. My machine is an older ACER with dual core i5 and NIVIDIA graphics. Linux is the only OS…
user169954
  • 201
4
votes
1 answer

14.04 Desktop Unresponsive When Applications Minimized

Ive read quite a few very similar issues on here as what follows, though none match the exact symptoms Im experiencing. After a recent update, Ive noticed that when I minimize all my application windows, the unity desktop freezes for anything from…
Todd
  • 401
4
votes
1 answer

Ubuntu locks up when swap full

I have a Ubuntu system running xfce and 2 GB RAM. I have a 1GB swap file which, when multitasking begins to fill up. When I have even a small amount of free swap, I have no issues, but the second the swap fills, the system locks up. Not even the…
nanofarad
  • 20,906
3
votes
0 answers

Lubuntu 12.04 random lock ups - next steps?

Setup Lubuntu 12.04, XP dual boot ATI RS480 graphics Problem I get random lockups about once every 3 hours or so. Symptoms PC hangs with (typically) a small bar-code style square in top left quadrant of the screen or else a totally white…
user67009
  • 31
2
votes
0 answers

CPU hard lockup with Ubuntu Server 14.04 on AMD machine

I have the following workstation configuration with 64 cores: CPU: 4x AMD Athlon 6378 2.4GHz RAM: 128GB mobo: Supermicro H8QGI-F-O SSD: 2 x 512GB Samsung with software RAID-0 setup I am running Ubuntu Server 14.04. I was getting the…
petr
  • 21
2
votes
0 answers

Lockups in X session, sth to do with stuck pageflips?

I'm having trouble with my X session locking up apparently at random. Everything stops responding except the mouse pointer. I can exit to a tty, but the screen goes blank for around 60s before anything appears. When it finally does I get the see the…
James
  • 121
2
votes
1 answer

Why does my Ubuntu 14.04 desktop lock up when I do large data transfers between hard drives?

I am running Ubuntu 14.04 on a system that I built from parts. All software is up to date according to update manager. System details: Kernel is 3.13.0-39-generic GCC version 4.8 (i686-linux-gnu) Xorg version 1.15.1 (30 July 2014 …
Superstash
  • 31
2
votes
0 answers

12.10 - GPU lockup

I just downloaded the Ubuntu 12.10 and i am trying to install on my laptop with Nvidia chipset, on previous version i was able to install on through nomodeset command and the i use to install later on .. the last i used was on ubuntu 11. and now i…
sunil
  • 21
2
votes
0 answers

Ubuntu 12.04 black-screen and totally freezes switch user

How to troubleshoot this issue is my question. I don't know how to go about this. I set up an account for my wife to use the computer for her homework. I log in automatically. She logs in and does her homework. I switch users. The kernel locks…
AdamOutler
  • 881
2
votes
2 answers

Why can't any Linux version boot Ryzen 7?

I am trying to boot Ubuntu on a Dell with a Ryzen 7. I can't get it to boot because of messages about kernel soft lockups and such. After a while the CPU heats up a lot (probably from a loop.) I can't get any other Linux distro to boot either. Does…
Arush Agarampur
  • 31
1
vote
1 answer

Installed Ubuntu in an external drive connecting with USB 3.0. Ubuntu 16.04.1 wouldn't boot after installation

I have 1 M.2 SSD, and 1 2.5in SSD on my laptop. Attaching the 1TB 2.5in HDD in Syba SY-ENC25054 USB 3.0 to SATA 2.5" Hard Drive External Enclosure Case Windows 10 is installed on the first drive. The second drive does more of data storing function…
mitea
  • 11
1
vote
1 answer

Ubuntu 16.04 (Xenial) multiple CPU hard lockup

I've been chasing this issue for about 6 weeks, ever since I upgraded to Xenial. Initially thought it was random, but found using USB serial adapters provoked the issue. Didn't matter if it was on board USB2 or a PCI-E USB3 add-on card. Would result…
Terry Hardie
  • 51
  • 1
  • 6
1
vote
0 answers

Ubuntu 16.04 locks up when screen turns off

I have just set up a desktop box with Ubuntu 16.04. It is working fine, except it locks up when the display shuts off per system settings under brightness & lock. I researched this a little and found this thread that suggests editing…
Steve
  • 323
1
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