when the computer or an application is not responding

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16
votes
4answers
943 views

How to force Linux kernel to “freeze” (or nearly freeze) for a few hundred milliseconds

We are running a real-time process on a non real-time kernel (CentOS 6), and this is probably not going to change. We have a streaming video application that requires about 500 MB/s of PCIe traffic ...
2
votes
0answers
35 views

GNU/Linux OOM (out of memory) freezes - solution ideas

Explanation While working with older machine with swap on and 2 GB ram, I frequently encounter behaviour well described as freeze: here, what is the best way to prevent out of memory oom freezes on ...
0
votes
0answers
5 views

My Dell Latitude freezes upon suspending if libvirtd/virtlogd is running

I've got a strange problem with my dell Latitude E6530: everytime I put it to suspend mode (closing the lid, as per Power Manager configuration) and the virtualization daemons (libvirtd and virtlogd) ...
13
votes
2answers
4k views

System hanging when it runs out of memory

I've got an eeePC 900a: it has a 8GB flash as disk and only 1GB of RAM. The Linux distribution installed on it is ArchLinux. When the system runs out of memory it becomes extremely unresponsive: it ...
5
votes
2answers
1k views

How to open tty or execute some script when the shortcut Ctrl+Alt+F[1-6] doesn't work and X11 is partially frozen but system is still working?

I'm using Ubuntu 10.10 with Gnome on Acer Aspire One netbook. The X11 or just some parts of Gnome like panels and partially windows (details described below) are frozen which doesn't allow to do ...
0
votes
2answers
20 views

Keep system accessible in case of freeze

We run a small server (Ubuntu 14.04) solely for computing purposes. From time to time, a user will manage to consume enough memory to freeze the system. Last time, the culprit was a process that ...
3
votes
1answer
1k views

My Debian freezes

I installed a fresh Debian 7 install, but it freezes from time to time, and when it happens (quite often indeed) only the mouse can move around but everything is blocked. All I can do is restart. I ...
1
vote
1answer
9 views

Enigmail 1.9.2 freeze when doing setup wizard [closed]

On my Linux Mint 17.3 Cinnamon in Enigmail Thunderbird's add-on, I've tried to add my pgp keys file with the setup wizard, after that the software crashes. From that time the setup wizard freeze when ...
1
vote
1answer
875 views

Freeze after /dev/sdaX: clean

I did a major update yesterday and after shutting down the computer and turning it on today, I constantly get jammed at: /dev/sdaX: clean 99999/999999 files, 999999/999999 blocks If I do CTRL+ALT+...
1
vote
1answer
86 views

Why does querying xrandr briefly freeze the screen?

Every time I run xrandr --query my screen freezes very briefly. It's enough to be jarring if I'm watching an animation or a video -- which sucks, because I have a script querying xrandr every 3 ...
1
vote
1answer
285 views

keyboard lockup after hold ctrl key

With Fedora 17 I have a PS/2-connected keyboard. If I hold just the left CTRL key down for a period (say 5 seconds) then the whole keyboard locks up. The USB-connected mouse still works and I can ...
1
vote
0answers
44 views

Antergos linux keeps freezing

By freeze I mean that only full reboot makes the system workable again. During the freeze the cursor is motionless, no keys are working (neither AltCtrlF1-6 neither capslock/numlock) and the music ...
0
votes
1answer
2k views

Kali 2.0 screen freezing

Every time when I try to power off or reboot my laptop the screen freezes and I have to force power off, because the is the only option left. From my experience I know that installing Nvidia card ...
3
votes
1answer
53 views

Fedora 23 hangs on reboot/poweroff [nvidia.ko NULL pointer derereference]

This seems to be pretty random, it's been happening for ages and I update everything pretty regularly. Sometimes reboot and poweroff works just fine, and pretty quickly. Sometimes it takes a while, ...
1
vote
0answers
183 views

UI freezes when I open many tabs in browser

When I open many tabs on browser, UI completely freezes. In some cases I press Ctrl+Alt+F1 twenty or thirty times, after 15 minutes UI unfreeze, I switch to text terminal, kill browser and after that ...
0
votes
0answers
53 views

Having a bad time installing Ubuntu

So, I recently upgraded my motherboard and processor. Windows was a real pain to me so I decided to go with Ubuntu. However, I ran into more than a few problems with my installation: When I tried ...
24
votes
3answers
19k views

Why is my PC freezing while I'm copying a file to a pendrive?

I have a really strange situation here. My PC works fine, at least in most cases, but there's one thing that I can't deal with. When I try to copy a file from my pendrive, everything is ok -- I got 16-...
0
votes
1answer
63 views

Ubuntu 14.04, computer freezing

I have a problem with my netbook, it freezes frequently at random. Then it makes crunching noises and nothing helps except pressing the power button. It happens every 1-2 hours or so, during me ...
0
votes
1answer
63 views

debian / screen freeze but system working

I've recently installed a dual-boot Debian Jessie / Win10 on a 64bit tower PC, and I'm having serious issues with Debian's install. Out of the blue the screen/mouse/keyboard freeze, while the system ...
0
votes
1answer
41 views

Linux Mint OS always freezes when laptop is not charging

I'm using Linux Mint 17.3 OS on my HP Compaq nc6400 laptop. The OS always freezes after a while if I'm using my laptop without charging it but never does so if I'm charging my laptop while using it. ...
1
vote
0answers
31 views

Ubuntu 14.04 crashing when 2 monitors are plugged in

The title is pretty self-explanatory. Ubuntu 14.04 is crashing, but only if 2 monitors are plugged in. If I start my computer with just the main monitor everything works fine. What is weird is that ...
0
votes
0answers
171 views

Ubuntu 14.04 stuck on boot: blank purple screen. Can only kill power

I did some digging but couldn't find an answer to my problem. I'm a first time Linux user, when I turn on my laptop running ONLY Ubuntu 14.04 on it, 50% of the time it freezes on a blank purple ...
1
vote
1answer
56 views

Machine freezes once it hits swap space under heavy load

I encountered several crashes of my machine. Meanwhile, I can reproduce it when I start a program that fills up all memory. Once the system starts writing to the swap file, the system freezes and I ...
1
vote
2answers
902 views

Linux Kernel - Wacom Tablet (CTL-490DW-S) - Lockout

I'm a bit of a beginner with Linux and after trying to fix this over the last few days I've finally given up and need your help. I'm trying to use my new Wacom (CTL-490DW-S (Intuos DRAW)) drawing ...
0
votes
0answers
35 views

Dell XPS8700 running Linux Mint freeze

I left the PC running over night and I woke up to find the system unresponsive. I verified the system log and this is what I found Syslog Details There are no logs after 05:35:11 The only ...
0
votes
1answer
41 views

Randomly Linux freezing on Acer Extensa

On my Debian and Arch keeps freezing randomly won't respond at all with keyboard, mouse or power button. I have to over ride by holding power button for 10 seconds to hard reset. I boot linux using ...
1
vote
2answers
357 views

How to enable Plasma/KDE automatic restart upon freeze?

I used OpenSuse for several years now. One of the things I utmost liked with this distribution was the way Plasma/KDE issues where handled: from time to time it may happens that the panel briefly ...
3
votes
0answers
3k views

System freezes upon executing any boot option in a live USB installation of Mint

Problem I'm trying to install Linux Mint 16, 64-bit, MATE using a live USB. The boot option menu itself is responsive and work as expected. However, when I execute any of said boot options, the ...
0
votes
0answers
79 views

How to restart script or reboot if FFMPEG / AVCONV get stuck?

I am using AVCONV to stream my webcam on Dailymotion, here is the command : avconv -f video4linux2 -s 853x480 -i /dev/video0 -f flv -b 800k -r 14 rtmp://publish.dailymotion.com/publish-dm/xxx I run ...
0
votes
1answer
108 views

Why linux system freezes and not recover from running out of RAM

I am running Ubuntu Desktop 15.10 on my machine with 4 GB of RAM and 4GB of swap. My understanding of Linux was, when it starts to run out of RAM, it will start killing processes to get some RAM back, ...
4
votes
2answers
402 views

Got a brand new laptop with hardware still unsupported. Should I wait or return it?

So my parents offered my a Laptop, a quite good one judging by my other computers (for example my Desktop is still stuck on CDQ), and it is always sort of rude to return a gift in any situation, but ...
1
vote
1answer
63 views

What is the most probable cause of terminal freeze / unresponsive keys?

What is the most probable cause of terminal freeze / unresponsive keys? I'm a relatively new Linux user (2 yrs) and am still learning to use the command line. I have used xkill and similar commands to ...
1
vote
0answers
46 views

I think my hibernation image in the encrypted swap partition is corrupted?

I have a hard drive with the below partition layout. I can suspend-to-ram and resume as well as pass all the pm_test (without actually writing the image to disk). However, when I do the actual suspend-...
1
vote
2answers
62 views

How to prevent a process from hanging the computer?

A process can cause the computer to "freeze" for example when exhausting CPU or swap. Is there a way to prevent this from happening? For example by setting the max %CPU or IO MB/s that can be granted ...
0
votes
1answer
94 views

Need help with mcelog: random freeze on Ubuntu/Fedora/Win10

My newly built computer freezes randomly. When it freezes, it doesn't respond to keyboards or mouses, so REISUB or ctrl+alt+f1 (or f2,f3.. etc) are of no use. I had tried different graphic card ...
1
vote
0answers
40 views

Windows directories keeps getting unmounted on two identical Red Hat servers

We have a pretty severe problem at my research center. I have, together with IT, set up an infrastructure like this: Users use their laptops at their desks. They all have a home-folder at a storage ...
1
vote
0answers
114 views

using left mouse button to move window can cause freeze (XFCE4/Ubuntu 15.10)

I use xfce4 under Ubuntu 15.10. Fairly often some action with my mouse causes the cursor to change into the closed hand icon and my session freezes in a useless state. When this happens the cursor ...
0
votes
1answer
63 views

Where is Alt+SysRq+r+e+u+i+b in /var/log/syslog?

My computer hangs after an hour of continuous use. I have to press Alt+SysRq+r+e+u+i+b to restart the computer. Where in the syslog can I identify when I restarted the computer so I can try to ...
0
votes
1answer
105 views

Why do I experience screen freeze?

I recently installed Kali-linux on my machine. Sometimes it freezes randomly (which means I can't do anything on the graphical interface but can switch to TTYs), leaving the following message in my ...
1
vote
1answer
769 views

Random system Freezes on two different machines in the same room

I am at my wits end and looking for suggestions. I have been encountering a problem with 2 desktop workstations in my home office. This problem began on an old dell machine, and when I finally gave up ...
5
votes
1answer
251 views

linux mint hangs - how to find a reason?

My Linux Mint system (17 Cinnamon, lenovo g565) hangs up frequently during work (say, 2-4 times a day). It usually looks like a white or black screen (or off if the lid was closed). CPU seems to be a ...
0
votes
0answers
112 views

My computer freezes after selecting an option in the gnu grub. What do I do?

My mom had a computer. She downloaded some music illegally, and now it doesn't work. I decided to try to install ubuntu on it (I made a bootable usb stick on another computer). The usb stick works ...
0
votes
1answer
130 views

Debian 8.2 computer freezing+crashing randomly

I have a Debian media server which seems to be crashing several times daily for no apparent reason at all. It simply freezes up, without restarting, until you manually restart it. I have uploaded the ...
3
votes
1answer
3k views

Debian Jessie - Random freezes

I have a fresh installation of Debian Jessie, with Cinnamon and Gnome. I run it on a decent computer with the following specs: Athlon II x3, 6GB DDR2, 2GB SWAP (swapiness minimum), 600GB SATA HDD (...
2
votes
1answer
266 views

Linux desktop keep randomnly freezing after recent updates

I'm experiencing random desktop freezes (I have to hard shut down the system) after recent updates on my Archlinux box. Today it happened a few minutes after startup. The only programs running were: ...
0
votes
1answer
168 views

Too many tabs in Chrome causes whole computer to freeze

When I open too many (more than ~8/9) tabs in Chrome the whole GUI freezes and the mouse pointer doesn't move and the system responds incredibly slowly to keyboard input (~20s delay). I'm assuming it'...
2
votes
0answers
57 views

SSH freezes the whole computer when logging in

I am using a Debian wheezy mainly to play music and browse web as a shared computer. Problem is that all SSH connections freeze the computer for a moment when initiated. To be clear: all these SSH ...
1
vote
0answers
71 views

Live OS freezes while copying files

I was trying to backup many files (~10,000) from a hard drive on an OS-less notebook to an external 500 GB HDD, so I booted up the Fedora 22 Live XFCE spin using a USB, started the copy and after 5 ...
3
votes
1answer
166 views

How do you prevent system from freezing when memory is used up?

I've been running a process (gdb) that can easily use up all my ram and swap space. Every time that happens the whole system becomes very non-responsive and Xorg will barely update, I can't swith to ...
3
votes
1answer
203 views

Why is Nouveau working so badly for me? System keeps freezing

As an intermediate Linux user, I decided to try Arch Linux (having only experience with Ubuntu before, 3 years ago), and everything was going well until the part where I tried to get a graphical ...