Ubuntu :: System Hangs Whenever Module Is Inserted Or Removed?
Jun 26, 2010
After the updates about a week ago I noticed my system was hanging (screen and mouse frozen, unable to switch desktops, trl+Alt+SysRq+B still reboots) frequently. Though sometimes the system would not hang but become extremely sluggish and unresponsive. I've been able to determine that the problems occur whenever a module is added or removed. I can cause this problem with such commands as:
sudo modprobe aes
sudo rmmod raid0
I've tried multiple kernels but the problem persists. I've run memtest on the system but no errors have been found. I wonder if this could be some other sort of hardware problem but I'm suspicious that this began after a set of updates. I've seen message such as this in the kern.log:
Code:
Jun 25 22:35:48 localhost kernel: [ 240.480059] INFO: task modprobe:2672 blocked for more than 120 seconds.
Jun 25 22:35:48 localhost kernel: [ 240.492925] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 25 22:35:48 localhost kernel: [ 240.506918] modprobe D 00000000ffffffff 0 2672 2650 0x00000004
[code]....
I've tried using strace but that was not helpful. This is becoming a serious problem as I cannot load any encrypted volumes due to the inability to load the aes module. dpkg is currently in an interrupted state as the system hung when upgrading virtualbox-3.2 when it attempted to remove the modules. So my system is barely functional and I cannot see any way to fix things.
The module e1000e is loaded into system. At addition VLAN the system hangs at a stop VLAN or configure other devices (sound, video). In OpenSuSe 11.3 it worked correctly. MB: ASUS P5Q-ME DO / NetCard: Intel 82567LM-3
I installed a new, clean hard drive into my old iMac G5, and decided to finally set up a linux machine, I installed Ubuntu 9.10 with the 64bit mac software, and the instal went very smooth, however now there are a few hardware issues.First, the cd/dvd drive loads disks, but the system does not recognize anything inserted, and wont play any media. Second, the built in airport card doesnt want to work either, I can see the icon for wireless at the top right of the screen and it lets me plug in my network name and security, but wont connect or see any wireless networks at all, however, ethernet works fine, and it is how I am able to get online now. Lastly, the screen is slightly shifted to the right and the far right of the screen wraps around to the left side of the screen, its not major, probably a 1/4 of an inch, but it is annoying.
I am sure these are likely driver issues, but when I go to Administration, and Hardware Drivers it does not say I need any drivers. and when I run through "system testing" it says that this version of ubuntu is not genuine, or something like that, but I just burned the install disk last night from ubuntu's website.
I have a Dell desk top PC, running WinXP and Ubuntu 10.04 LTS with a Ge-Force FX 5200 video card. In trying to get both monitors to work properly I thought it would help to reinstall Nvidia binary X.Org driver V173. After I removed the driver I tried to restart the computer with Umbuntu, it hangs up at the Ubuntu logo. I can boot with the live disk, I also tried to reinstall the Nvidia driver But the machine still will not boot from the hard drive, it will boot into Win XP normally.hould I just reinstall Ubuntu or fix the problem I created? My skills working in Terminal are minimal
I've got a new Ubuntu 10.04 server install with a new 3 disk RAID 5. The boot disk is separate, not part of the RAID. I was trying to practice what I would do if a disk died to recover the RAID, so I unplugged one of the three disks. The machine now just hangs on startup. It shows fsck at the top of the screen but doesn't got anywhere from there. If you press a key it shows the Ubuntu splash screen. If I plug the disk back in, everything boots up normally. So, my question is, how do I get the machine to boot with one of the RAID members missing? I know I can recover it using the Live CD, but it would be nice to be able to get back into the machine without the CD.
I was experimenting WINE in my Ubuntu machine. After a while I've decided to remove it. I uninstalled the application that I installed using WINE (Steam - Day of Defeat). And then I ran the following command: sudo apt-get remove wine* I checked (using tab) and only wine, wine1.2 and wine-gecko where there to remove. After doing this I shutdown my computer. When I turned it on again everything was fine until I had to pass trough the login page. I've inserted my credentials and then when I clicked in "Login" it appears a dark screen and then again the Login screen.
I'm running Kubuntu natty on grub-efi-amd64. I've just received notification of a bunch of new packages to install, I believe part of it is a kernel update. When I click on "apply" a window comes up which says "Additional changes are required to complete the task". "2 packages to remove" lists "grub-efi" and "grub-efi-amd64". It lists 5 packages to install 3 of which are linux kernel and 2 of which are the bios version of grub.
How can I update my system without having efi-grub removed?
I have 6 hard drives that have 9.10 and 10.04 on them. Not as a dual boot, but some hard drives have different versions on them. When I have plugged the drives in a couple of weeks later, the grub is gone and system will not boot. I get like a grub 1.5 error and that is all the options I have. Does anyone one know why this happens? Nothing on the drives but the O/S to get rid of windows. All drives worked perfect until they were removed and installed later.
I've removed Tomboy notes from the startup applications by accident :-( I've tried to re add it again by typing in tomboy in the command area, but when the system starts up, the main window for tomboy notes opens up & when i close the main window tomboy shuts down.How can I get it the way it was before, just a icon in the notification area on system start up?take a look at the system start up command for Tomboy Notes and post it I know the command tomboy notes use in the applications menu * it's Tomboy* but I can't remember the code in the start up applications or system start up command to get it just a icon in the notification area without the main window opening up every time I start gnome,
I've been having trouble with CUPS.I uninstalled it and I wanted to re-install it. When I removed CUPS some other files were removed too. I don't have an option of installing the software or updating a system, in the Control Center.
I have Mythbuntu 10.04 installed on an exclusive HTPC and working great... until tonight. After letting the system update some packages (161 packages if I remember right), I suddenly have an issue where the graphical system won't start. After researching I found three error messages that might be causing that.
1. At the start of splash screen I see "UUID=xxxxxxxCD7 not ready yet or not present" I checked in /etc/fstab and found that this is the swap partition. I don't remember seeing this before so this could be the culprit.
2. I'm not at the computer in question right now but I saw a Plymouth error about "mountall" and then the message "plymouth command failed". Not sure if this could be the main error.
3. after a while (usually ca. 1-2 min) I receive thousands of errors of the kind "out of memory"... "kill process XXXX" (process vary wildly e.g. dbus-daemon, mysql, etc)... "process killed"..."respawning"
After error 3, I'm not able to switch to graphical console (ctrl-alt-F7). If I was in the graphical console at this moment, I simply can't switch to the CLI console. I'm always afraid of updating my system since I've seen lots of things breaking afterwards (usually the proprietary graphic drivers) but this is really strange.
I couldn't see any users in the "Users and Groups" menu, not even my own account. Then I tried to create a new (unprivileged) user, but it didn't show up niether. Then I quit the "Users and Groups" menu, and tried to open it again. This time, I could see a user, but only the root user. Then I quit again. Later I tried to gain root-access doing some other stuff, but all of a sudden, system told me, that I wasn't in the sudoers file anymore! Then I rebooted the whole system, and got stuck with this messeage:
Code: mountall: mount /dev/pts [397] terminated with status 32 mountall: Filesystem could not be mounted: /dev/pts fsck from util-linux-ng 2.16
[Code].....
All happened using the graphical interface in Ubuntu. I haven't been messing around with the terminal or the rootaccount or anything like that - just tried to add a new user to the system using the graphical inteface, and now I can't even access my system.
i have 11.04 in my pc.when im using the vlc media player, after playing 5-10 min, its going to be stopped automatically and system will become very slow . so again i am going to restart the system .after restarting the system my theme going be changed . i couldn't figure out whats the problem . help me to get out of this.
How can I remove options from the menu that automatically appears when a CD is inserted? I thought that these settings would be in the Preferred Applications but no luck.
I'm an experienced Ubuntu user and have a problem with a certain USB pen drive. It doesn't seem to be recognised in Ubuntu and I can't browse it. Other USB sticks do work and this drive works in Windows.
I would like to do something which I guess is pretty common: convert my collection of CDs to good quality mp3, named according to artist-song and properly tagged. Having to rip hundreds of CDs (i am not rich, i just live in China! ) I would like this to be as automatic as possible, like: insert cd wait 4 minutes (sw gets tracks' name and tags from the internet, and rips) CD is ejected automaticallyinsert new cd ...and so on If I was on windows, i would probably be doing this with itunes. Juicer does not support MP3. I read great things about rubyripper, but i dont understand how to make it start automatically.
I'm using a Toshiba satellite U400 and just upgraded from 10.04 LTS to 10.10 and now, every time I try to suspend the PC, it hangs. Before, 10.04 LTS worked perfectly.
I searched ad could only find some talks about 'vt switch' [URL] but couldn't understand if there is a solution to the problem and if yes what is it
VLC media player hangs OS when starting, presumably as it loads a new video file (.mp4 in my case). It doesn't happen every time, but after a few days it eventually freezes the system requiring a reset. Google shows many complaints on this, but no fix. Is there a solution?
I`m trying to compile sources of kernel module which has been written for kernel 2.6.9. There were many changes in kernel headers since then in current kernel sources. I`ve found that old /asm/system.h was moved under architecture dedicated directory /arch/*/include/asm/system.h. Anyway during sources compilation I`m having errors related to kernel sources. It looks like there is something wrong with this /asm/system.h
Code:
../asm/system.h: In function �__cmpxchg�: ../asm/system.h:248: error: expected string literal before �LOCK_PREFIX� ../asm/system.h:254: error: expected string literal before �LOCK_PREFIX�
I am using Ubuntu 9.10. Every time I try to reboot my system it hangs. Shutdowns work properly. I've done multiple re-installations. Nothing I've tried fixes the problem. Does anyone have any suggestions?
Just installed Lucid Lynx on my Desktop and after logging in I would get a 15-20 second pause before Gnome appeared. I found many many potential solutions for this problem on the Internet but none solved it. Finally figured out that it was due to the system seeing a floppy controller when I have no floppy drive. I was led to this conclusion by the following two lines in my syslog (System > Administration > Log FIle Viewer > Syslog).
May 1 18:27:04 Desk-Ubuntu kernel: [ 34.636665] end_request: I/O error, dev fd0, sector 0 May 1 18:27:16 Desk-Ubuntu kernel: [ 46.813441] end_request: I/O error, dev fd0, sector 0
Note the 12 second delay when it tries to read again.
So if you are getting the pause and seeing the same thing your system log then ...
Enter your BIOS and disable the floppy drive Use sudo and edit /etc/fstab commenting out the line with fd0 in it
Hope I can save someone else the headache of hunting through the Interwebs and finding 5 different solutions none of which worked. Learning as I go with Ubuntu so I didn't even know how to carry out most of the "solutions" which required more googling. I am migrating from FreeBSD due to application requirements
I have been trying to switch to CLI mode for 2 hours now, I have searched possible solutions and I couldn't find any so I decided to make a new topic.
I'm running Kubuntu 10.04 x86_64. I need to log into CLI to stop KDE from running, but I just can't get there.
When I try ctrl+alt+F1 the only thing happens is that mouse pointer disappears and everything else (background, panels, etc.) stays the same, and frozen, no keyboard input helps.
Then when I perform ctrl+alt+F7 it gets me back into GUI. I have also tried sudo chvt 1, same effect. Then I tried to change inits. sudo init 1 and sudo init 2 give me just a blank black screen and where only reboot helps. init 3 doesn't do anything (guess I'm already running init 3 and thats why).
I did a fresh install of Ubuntu 10.04 on a desktop. I then did the system updates and on the reboot the system now hangs at the splash screen before the login screen. I only get a blinking cursor on the text-based terminals. I don't see the grub menu, I assume because Ubuntu is the only OS on this machine. So I can't boot to single user or text-only mode.
I'm running Ubuntu 10.10, 64-bit on an HP 8740w. Sometimes (I don't have the frequency yet, but it has happened a half-dozen times in the past couple of weeks) when I insert a USB storage device the system hangs, requiring a power-cycle. I have been careful to either eject or "safely remove" every USB device, but it still happens. I believe it only happens when I remove a device and later re-insert it, but I don't have enough data points to be sure.
Most of the time, I'm running VirtualBox, but I haven't captured the USB device in a VM.
First question - how can I go about figuring out what might be going wrong? Once it happens, my options are extremely limited (power switch). When this happened one time I left the system for 30+ minutes, and it did not recover.
Of course, when I wanted to see it, I did 10 insertions/removals without a hang.
I'm new to ubuntu I last used it 2 years ago and did not like it one bit but a friend told me about 11.04 so thought id give it a go and I absolutely love it. its far superior to windows 7 imo. now my only problem so far is when installing updates it seems to hang on applying . but im sure there should be some indication of progress.
