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Questions tagged [hang]

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1
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1answer
372 views

dd hanging & uninterruptible sleep (kernel quirk?)

So, this has been annoying me for years. This happens with more programs than just dd, but I find it happens very often with programs that involve raw filesystem manipulation. When I'm copying with ...
3
votes
2answers
94 views

Systemd hangs when attempting shutdown

Distro: Gentoo systemd: 242 For a while, on both of the systems I have here, I've been unable to do a proper shutdown (halt, poweroff, reboot). It gets most of the way through shutting down services ...
1
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2answers
271 views

Cannot read regular file - IO operations block

I'm writing a program that scans through all files in an Android device, looking for a specific string. A few seconds through the process, I get stuck on the following file: /sys/power/wakelock_count ...
0
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2answers
78 views

Virtual server stops responding and uses 100% CPU, how to diagnose?

We are facing weird issue with a CentOS 7.4 virtual server (VMware ESXi), the server suddenly gets 100% usage in few seconds resulting in ssh won't work and a specific program running is not ...
3
votes
1answer
73 views

Debian Stretch VM becomes quasi-unresponsive every few days

The impacted computer is a VM running in vSphere, and it's a production server, so troubleshooting time is generally nonexistent once the issue rears its ugly head. The problem goes away after a ...
1
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0answers
20 views

How to track down reason of suddenly appearing non-termination of a programme, while with `strace` it terminates?

I have a programme that suddenly started to not terminate (I was not updating the programme, but my system & the kernel, I do not remember what was causing the effect. Recompiling the programme ...
4
votes
3answers
9k views

Ubuntu 18.04 is freezing randomly

I have installed Ubuntu 18.04 on my laptop Dell Inspiron 5000 (AMD Ryzen 5 2500U/8 GB RAM/1 TB HDD/Windows 10/39.62 cm (15.6 Inch) FHD/Vega 8 Graphics) Inspiron 5575 The os is freezing randomly even ...
1
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2answers
309 views

skill is not working to kill a session in Redhat 7 box

I had Redhat Linux 6.x which was recently upgraded to the Redhat 7 box. Previously I used to use the below command to kill the linux sessions. But now I am getting the the below error if I try to kill ...
0
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0answers
106 views

Cannot kill my lsof processes even as root

My lsof is hung so bad that I can't even kill -9 it. Initially, it was owned by another process, foo. I tried killing foo, hoping that lsof would also go way. But while I was able to kill -9 foo, now ...
1
vote
2answers
4k views

Ubuntu boot hangs at started update utmp about system boot/shutdown

I recently installed boost on my Ubuntu, did apt-get update and everything was fine. After a while, no apps were working. I tried to restart my PC but unfortunately, Ubuntu is not booting anymore. ...
1
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0answers
2k views

Reboot is not working

I have the VM running with ubuntu(14.04.4). Sometimes, I just want to restart the VM by reboot command. When I execute the command, it prompts "success" but nothing happened. I checked the syslog, no ...
0
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0answers
398 views

kernel: igb exceed max 2 second (system is unresponsive)

I have a system that is becoming unresponsive for anywhere from a few seconds to a couple minutes. The only messages I see in the logs are like this: Sep 16 18:07:33 server kernel: igb 0000:01:00.3: ...
1
vote
1answer
2k views

df hangs and I have no idea why

[backstory] I've got a CentOS 7.5.1804 mail server (postfix/dovecot) that seems to be working, however when I added a new email client, it didn't create the mail folder for the user [/backstory] I ...
0
votes
0answers
200 views

Samba Share Regularly Hangs for Win 10 Client

I'm running samba 4.77 on Fedora 27 with Kernel 4.16.12. I've got a fairly basic samba config, which I have posted below. I use Windows 10 clients. This problem only ever seems to happen on my samba ...
1
vote
1answer
620 views

“shutdown -r” works but “reboot” does not

Fresh install of Centos 7 KDE kernel: 3.10.0-693.21.1.el7.x86_64 After I do a yum update to update all of the packages, reboot no longer works. I tried to track the problem with no avail. For fun, I ...
1
vote
1answer
59 views

How to properly sandbox a program that may hang the computer

Recently I compiled a program in GNU MIX. The program is rather simple and only contains an unconditional jump to the only instruction, which is essentially a infinite loop. The problem is, when I ...
0
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0answers
41 views

Odd Stuttering on Dual CPU System

I have an HP Z800 with two Westmere EP based X5670 CPUs (basically gen 1 iX series) and an HD7950. I don't know when exactly this started, I've been switching between various distros probably a bit ...
0
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2answers
1k views

High IO on KVM/LXC host will hang server but not on guest (Proxmox/Debian)

I have problem for past several months which was progressively getting worse and now I'm in state that if I try to do almost any intensive IO operation on my visualization host (Proxmox ve 5.1-41) ...
1
vote
1answer
441 views

Gentoo's openrc hangs forever in “caching service dependencies…”

Whenever I boot my gentoo laptop, openrc hangs forever in the "Caching service dependencies..." stage. This causes my computer to be unbootable unless I use a sysrq key to kill it and manually boot ...
3
votes
1answer
377 views

CentOS 7 no terminal on boot

I have rebuilt my CentOS 7 server and on restart, the boot screen locks up, yet I can remote in to the server just fine as through it has fully booted. Restarting and looking at the boot messages, ...
1
vote
1answer
29 views

If I replace files that are in use by a hung process and start a new process, will it use the new files or the old ones?

I am on Red hat GNU/linux 2.6.32-431.29.2.el6.x86_64. Recently - One of my process hung. This process was using few files from a directory - say DIR-1 . While process was in hung state, I moved ( ...
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0answers
35 views

Ubuntu locked up and strange UI changes, serious problem? [closed]

My Ubuntu 16.04 system just locked up out of the blue, I had to hard-reset the machine. Now that's booted back up, the Unity menubar has turned transparent, and the light shading around each icon on ...
1
vote
1answer
152 views

Why is LESSOPEN causing my command to hang?

I'm trying to read a filtered version of some files in less by using the LESSOPEN environment variable, but no matter how simple my preprocessor, the command hangs until I send it a SIGINT via Ctrl+C: ...
0
votes
1answer
339 views

I have a kdump kernel core dump; how can I analyze it?

After installing kdump-related packages and yet another hang, I now have a: /var/crash/kexec_cmd file. But what can I do with it? Should I use the command-line crash utility? I tried to, but it ...
0
votes
1answer
44 views

Figuring out what caused a system hang

Over the past several hours I've had my Mint 18.2 system hang on me - twice during a Skype (64-bit) conversation, and a third time. Screen locks up, audio repeats a short pattern, no response to ...
0
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0answers
38 views

Wireless keyboard/mouse hangs when an external usb drive is plugged in

This happens on both (1) an Asus VivoPC VM62N-G050R with the supplied wireless Asus keyboard/mouse, running Slackware 14.1x64 (dual-booting with the native win8.1), and on (2) a generic whitebox with ...
0
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0answers
19 views

how to make a memory hungry application cause swap slowness only to itself? [duplicate]

I have 6GB RAM and 10GB swap. Some applications dare to consume/allocate/use about 5GB to 6GB of RAM. When the memory completely fills out, the whole system hangs for 1 to 2 minutes to swap all ...
0
votes
1answer
155 views

linux hang on transfer with rsync,can be a ram error?

My problem If I transfer file with rsync using tapes,or disk(usb,e-sata,firewire) linux hang,no way to resume if not using powerbutton(brutal shutdown!) sysrq-trigger don't work,ssh don't answer,...