Fedora :: Switch Between Users Cause System Freeze Up

Mar 17, 2010

I just get upgraded from F10 to F12. I am having problem with switching between users. The system would freeze up and the mouse would move unresponsively, could not restart system with Ctrl-Alt Del. When it freeze up, it doesn't give error anyway on next start.I suspect the problem is doing with Web browser, If one user using browser and switch to other user without logoff, it will freeze up when other using login.It seem working on following contion.

1. It seems ok when all users quit using browser,and it doesn't matter how many times you switch between users.

2. delete all other users and operate as only one user

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Fedora :: 11 System Freeze With Dd Dump

Jul 17, 2009

i've got a non-typical problem here. i've got kvm-ed freebsd (its not so important here) stored on a block device - /dev/sdb8. i wanted to install fedora rawhide there but first i thought it's a good idea to do some backup. so here we go dd if=/dev/sdb8 of=freebsd.img bs=4k

theoretically, dd should do the thing without saying a word, but it doesn't. every time it stops after reaching 16GB filesize (partition is about 35GB) and completely locks the system (only reset helps).the dump worked only once, but when i tried to compress this big image 7z got stucked too and the system froze . the problem occurs when copying to the same drive or to different drive. i've got a partial kerneloops logs, but so far i haven't found the answer.

Kernel failure message 1:
BUG: Bad page state in process bash pfn:14a224
page:ffffe200048377e0 flags:0040000000000000 count:0 mapcount:0 mapping:0000000000000002 index:2a4b (Tainted: P )
Pid: 9711, comm: bash Tainted: P #1
Call Trace:
[<ffffffff810a2be0>] bad_page+0x11d/0x130

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Fedora :: System Freeze On Usb Detach?

May 30, 2011

I've problem with fedora 15. If you detach usb disk without umount it before, system freeze.

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Networking :: Gigabit Switch Causing Network To Freeze?

Dec 30, 2010

We have an old Zonet 10/100 switch in our home network that locks up whenever there's a power glitch longer than about a microsecond. (OK. It's not that bad but if the lights flicker, I usually end up going down to the basement to see if the switch is hung.) None of the computers or peripherals are affected by the glitches, BTW. Power-cycle the switch and everything starts working again. After putting up with this for months I finally picked up a Netgear 8-port 10/100/1000 switch to replace the Zonet. Unfortunately, when the Netgear switch is in the network, everything slows to a crawl before completely freezing up. Pinging other systems barely worksname would not work.Pinging another system by its IP address worked a little but packet losses of 70%-80% were the best I saw. At first. Then it gets to where the loss is 100%.

All systems were rebooted after the Netgear switch was inserted into the network. The systems that were capable of gigabit connections autosensed the new switch and set their port speed accordingly. And that's about all that works when the Netgear switch is present. (The Zonet is back in the network now.)One thing I have not tried is forcing the port speed on the gigabit-capable systems to 100Mb and re-inserting the Netgear switch into the network to see if the problem if due to running some of the ports at 1000Mb.The systems on the network are running various versions of Linux (with different kernel versions, of course). Most are due for upgrades to get them current but I was planning on hitting the systems that had gigabit-capable ethernet interfaces thinking that a.) 100Mb speeds have been around forever and no problems have been seen when everything was running at 100Mb in the past and b.) the gigabit support for the older kernels should be better (one system only supports an MTA of 1500 max at 1000Mb).

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Fedora :: How To Switch System Language?

Jun 17, 2010

how to do i switch my system language?

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Fedora :: Switch From The I686 Kernel To I386 Without Reinstalling The System?

Aug 2, 2011

One of our F14 machines was originally set-up with the i386 Kernel. I found out it had a kernel crash and the person tried to fix it by reinstalling the kernel, unfortunately they installed i686. Now some of our software that was setup to work with i386 is not cooperating. Is there a way to switch from the i686 kernel to i386 without reinstalling the system?

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Debian Multimedia :: XFCE Cannot Switch Between Users

Jul 4, 2015

System: Debian 8.1
DE: XFCE 4.10
DM: LightDM

The problem is that I cannot switch between users.I have copied a script from another site, but it will only open a new lightdm in a new display (tty8) while the other user's session is still active (tty7).

Code: Select all#!/bin/bash
dm-tool switch-to-greeter

In xscreensaver, the same thing happens. If I click New Login, it will open a new lightdm session in a new display.I have searched in Google and these forums for some time already and I could not find any solution.I have just installed Debian 8.1 and XFCE in this computer, migrating from Debian 7.8 and Gnome. What I want is the same effect (or similar) to what gdm/gnome does.I have also found a solution that's about installing xfswitch-plugin, but it will also install gdm3 and lots of gnome dependencies.

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General :: Switch Users Without Entering Password?

Mar 12, 2010

I'm a newbie running Ubuntu 9.10. I have two users (wife and me), and each user's screensaver is set to lock so that on wakeup, we get to choose which user's desktop to go to. However, Ubuntu requires a password, so this is pretty tedious.I'd like to switch users without entering any password. I know about this trick that works for the boot login, but it doesn't deal with multiple users.Is it possible to set empty passwords for users in Ubuntu, or skip the password in other ways?(I'm expecting real Linux users to suggest that passwordless users must not get any rights and there be an admin user with a strong password.

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Debian :: Switch Users Without Entering Password?

Mar 12, 2011

Is it possible to switch users in Debian without entering a password, as in Ubuntu Maverick? I already tried adding a nopasswdlogin group but it did not work, even though the "don't ask for password on login" entry in the login manager is no longer greyed out. Replacing gdm3 with gdm also did not work.

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Server :: Script To Add A Secondary Group To All Users Except System Default Users?

Jun 28, 2009

script which can add a secondary group to all existing users except system users in linux.

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Fedora Servers :: Postfix With System Users

Oct 28, 2009

Alright I have read through and tried many different tutorials but a VAST majority of them are with virtual users. This is my own personal email server so virtual users is unneccessary when I can just use the users personal mailbox.

My postfix main.cf there are 2 things I am unsure of. 1) For system users which local_recipiant_maps do i use? 2) What should mynetworks be?As I have been testing it out through telnet I can send mail but it doesnt get to my test email (a gmail account) and when i try to send an email locally it seems that everything works fine but the mail doesnt get there, and the error i am getting is that it cant find the user.

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Ubuntu Installation :: Log In Twice - Locked Screen Not On Reboot Or Switch Users

Oct 16, 2010

I've been running Ubuntu Maverick as a fresh install since release, and for the last 2 days, I'm having to log in twice! This is only on a locked screen, not on reboot or switch users. After the first login, I see the desktop for a second, then the screen goes blank. I wiggle the mouse and the login screen is there again. The 2nd login goes as normal.

I have gradually been installing things as I need them over the week since install, but I can't pin it down to any of those. It's getting pretty annoying when the screen saver kicks in!

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Ubuntu Networking :: No Network Icon In Panel - Switch Users

Nov 8, 2010

Have a strange problem with the network icon on my laptop.

I have two users (me & my wife). We often log in and use switch users so we're both logged in at the same time.

Whoever logs in first will get the network manager icon in the top panel, and whoever logs in second won't get the icon.

The second user does get a message (growl notification?) saying the wireless network <whatever> is now connected & it is indeed connected.

It's a bit annoying, as if I log in second, I can't chnage my wireless network to the other one we have, I'm stuck using whichever one my wife selected.

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Fedora :: Upgrading - System Not Allowing Users Login

Jan 30, 2011

I upgraded my Fedora Core distribution from 12 to 14. Everything worked fine, except for SQUID which refused to upgrade. I then went to rescue and installed SQUID using yum and then restarted the upgrade. It did finally upgrade the system and then asked for a reboot. Well, when I selected the new kernel option in the GRUB options, since I also have Winduhs, it gave a kernel panic. I tried booting into the older kernel and it worked. Now I see the users that are there in the system in the Graphical GUI login greeter screen. But none of the users get authenticated. I used the rescue option and removed graphical login and changed boot level to 3. I also enabled the root user. In the rescue mode, if I do a startx, everything works fine.

I logged off rebooted the system. When I login, I see the version is shown as Fedora Core 14, but the kernel was still the older one with Core 12. I again went to rescue and checked out GRUB and saw that it had no initrd for the new kernel. I created a initrd image with the mkinitrd command and then added it to grub. I again rebooted. This time it shows the correct kernel, but still the system does not allow any of the users to login. All the Logins fail. I have tried going to rescue and going to the system using 'chroot /mnt/sysimage' and doing a startx for Graphical. Everything works, but only with the Rescue mode in the DVD. The normal boot/login sequence does not work.

Incidentally when I do a 'yum distro-sync', I get something like this :

---> Package dialog.i686 0:1.1-9.20080819.fc12 set to be downgraded
---> Package dialog.i686 0:1.1-11.20100428.fc14 set to be erased
---> Package diffstat.i686 0:1.51-1.fc12 set to be downgraded
---> Package diffstat.i686 0:1.51-2.fc14 set to be erased
---> Package diffutils.i686 0:2.8.1-25.fc12 set to be downgraded
---> Package diffutils.i686 0:2.8.1-29.fc14 set to be erased

It still seems to believe its a Fedora Core 12 system. Another information is that when I leave rescue mode and do a normal boot without installation media, it starts doing some SELinux relabelling and reboots. Any pointers on how I can get the system working. I am able to work with the rescue mode way, with any user, as it does not ask for any password. I can even do startx and work on the GUI. All my data is also there. I just am unable to get the user authenticated using normal boot/login. I have tried using passwd -d username, but it gives an error :
passwd: libuser initialization error: could not open configuration file `/tmp/libuser.ElY0r9': No such file or directory
In fact, I am now in rescue mode only when I am writing and sending this.

My GRUB file is :
title Fedora ( with Initrd
root (hd0,9)
kernel /boot/vmlinuz- ro root=UUID=c91b69c3-0d89-4242-99db-6e0cc04ce3de LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
initrd /boot/initramfs-
title Fedora (
root (hd0,9)
kernel /boot/vmlinuz- ro root=UUID=c91b69c3-0d89-4242-99db-6e0cc04ce3de LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
title Fedora (
root (hd0,9)
kernel /boot/vmlinuz- ro root=UUID=c91b69c3-0d89-4242-99db-6e0cc04ce3de LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
initrd /boot/initramfs-
--- snip

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Fedora :: System-config-users Wont Stay Open?

Nov 5, 2009

when I open this it opens up greyed out for a split second then closes.I started it in a console ,it did the same but the following was left in the terminal

[tytower@localhost ~]$ system-config-users
Traceback (most recent call last):


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Red Hat / Fedora :: Creating Web Page For Users With Restricted Shell To Change System Pw?

Feb 3, 2011

I have a box that's used as an SFTP server. All users have restricted shell so they can only use SFTP to send and receive files. But it makes it hard to have them change their passwords. I thought that if we had a web page set up where the user could enter their username, old password, new password and confirmed new password, that this would be the easiest solution.

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Software :: Users And Groups And Authentication System Utilities Not Loading In Fedora 14?

Jan 19, 2011

have recently encountered an issue in fedora 14 whereby upon entering the root password the users and groups and authentication utilities do not run. (system/administration/users and groups) They used to run fine.

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Ubuntu Security :: Found Potential Login - Switch Users Method Allows To Bypass The Password Protection

Jan 7, 2011

I don't know if this is Just my Machine, or not. But here is it:

Ubuntu 10.01
Acer Aspire 7740

When the computer is locked. I can smiply go to switch users. when the list of users logins are shown all i have to do is click on my user name and it allows me into my account without typing in a password. I can lock the computer manually or wait for it to time out it doesn't matter. the switch users method allows me to bypass the password protection.

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Ubuntu :: System Freeze - What To Fix It?

Oct 3, 2010

I'm running ubuntu 10.04 as a mythtv box and it works mostly fine. But occasionally the system will hang during booting and the last messages I can see are code...

So, I don't know. What is the problem? This system is supposed to run mostly unattended, I can't check all the time whether it booted alright.

So what can I do?

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Ubuntu Servers :: System Users - Proftp Works With Only 1 System User?

Apr 14, 2011

I'm niomi and I'm the first account with sudo. I add an account, bob. niomi can get in reliably on active mode. (maybe relevant?: passive doesn't work) bob is jailed to his home directory, niomi is in ftp-special which gives her access to /. bob can't log in and his shell is set to bin/false. What could have gone wrong?

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OpenSUSE Install :: Transfer Users From Old System To New Installed System?

Jul 19, 2010

we have a server running with Suse linux many years. Meanwhile we changed server hardware about 4 times, mostly also updating to newest Suse version. We used to copy group, passwd and shadow to a backup medium, installed the new system and restored those files onto the new system and all was running fine. Now, some weeks ago we installed 11. on new hardware and after restoring those 3 files after rebooting the system hangs when starting GUI. I can boot into runlevel 3 and login with no problem, but when I boot into runlevel 5 mouse and keyboard are frozen. Also when starting GUI from runlevel 3 with startx mouse and keyboard immediately freeze. If I restore the files group, passwd and shadow as they came from fresh new installation I can reboot and login in runlevel 5 without problems.

OK, if I compare the userlist, as it is generated bei installation,there are some usernames I formerly not had in older Suse versions. I don�t know if this can make problems? I tried to edit the files, to combine the system users from 11.2 with the list of local user names from the old system but without success, again the mouse and keyboard freeze.So some questions arise:1) Why now mouse and keyboard freeze in xsystem, when there are changes in the user list (but only in runlevel 5)2) What is the correct way to save and restore users and groups from old to new system. I googled several hours but did not find a smart way. Maybee someon can point me to a link or a howto where I find the solution

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Debian :: System Will Freeze For Some Seconds

Jun 20, 2011

I'm experiencing some weird short freezing issues in Squeeze and / or unstable. Everything works as usual, then the system will freeze for some seconds if I don't do anything, or resume faster if I move the mouse or hit a key on the keyboard. I thought it was a wifi related problem, as I have an intel iwl4965 , here is what I often see in dmesg:
[ 2608.910307] iwl4965 0000:06:00.0: Queue 4 stuck for 2000 ms.
[ 2608.910317] iwl4965 0000:06:00.0: On demand firmware reload
[ 2608.912832] ieee80211 phy0: Hardware restart was requested

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Debian Hardware :: System Freeze - What To Fix This?

Apr 4, 2010

i'm running debian on a custom-built (no brand) box, which has been up and running for, maybe, 3-4 years with no issues whatsoever. all good parts... asus mbo, athlon, wd hd, etc. lately, every once in a while - like, say, every couple of days - i hear a "beep" from the box and the system freezes... lose the keyboard and mouse, and the display stays up but also freezes (for example, if a videos vid was playing, it would just freeze). have to physically reboot to get the system back. i assume this has nothing to do with the os or any app (although i'm usually browsing with chrome or ff when it happens). not being a hardware guy... can anybody clue me in as to how to figure out what's causing the problem?

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Ubuntu :: System Always Freeze / Stop It To Do So?

Apr 22, 2010

Well i just installed ubuntu and its amazing but after playing around a little i installed compiz and when i restarted my laptop it just wont let me log on it keep freezing. i dono what to do
how do i over write it or replace it or fix this problem?

iv looked on the wiki and tried what it says it doesn't work

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Ubuntu :: 10.04 LTS System Freeze On Logout.

May 28, 2010

My partner and I share the computer, so we are normally both logged in.

When we come to turn the computer off, one of us will log out then the other shuts down (to have a clean shutdown), but when either one of us uses 'Logout' the system just freezes, no response, nothing, have to turn the machine off via power button.

We can 'switch user' fine, and everything else appears ok but log out fails, I did try reporting a bug on this, but seems to have got taken over with people with dual screens / SLI cards, taking it over and its not the same thing.

I get the 'impression' its a graphics driver issue, I'm using the 'recommended' Nvidia driver (am at work and can't remember which version sorry).

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Ubuntu :: System Freeze During Upgrade?

Jul 14, 2010

I'm putting this in general, because I'm not sure if many of the specifics are relevant.I have an everex cloudbook which I purchased from eBay with hardy herron on it.I finally got around, today (I've had it for a year), to installing netbook remix 9.10 with a usb key I had also purchased from eBay.Now, during the upgrade (using update manager) from 9.10 to 10.04, the system appears to have frozen.(desktop frozen, no response to keyboard or mouse).Now, I'm not sure if something could still be happening inside there, and if it would be a good idea to let the machine site overnight before rebooting it. Frankly, it happened once already, and I rebooted, and update manager just took up where it left off once I logged in.

I have not determined what's causing these freezes. It's not a new machine, of course (everex, afaik, doesn't even exist now), so maybe netbook-remix is too taxing on the hardware? I installed xfce to get away from the bloated netbook-remix graphical menu garbage, which did seem to allow the system to run faster. Anyway, the real question here is, while the interface appears frozen, could the upgrade still be developing under the surface? (I hear a fan running in there. There is no hdd to spin, but flash memory, so I don't know if the fan is any indication of internal activity). Would you wait to reboot it? (update mgr indicated 4 hrs remaining to upgrade, in the installing upgrades phase, not downloading, appears it froze during "Running post-installation trigger install-info"). Or just reboot it and see what happens (get update mgr to start again?)? The system never froze on me with hardy. It was pretty quick and snappy, in fact.

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Ubuntu :: 10.4 System Freeze After Update

Jan 28, 2011

Running Ubuntu 10.4 32bit (only) on my system with ati graphics card. I just ran a software update, and I believe a new kernel was installed. When I rebooted, I saw the "Ubuntu" loading screen, but then the system froze up and the screen went completely blank. Thinking it was a graphics issue, I tried to press escape to get into the grub bootloader. However, when I pressed escape at the proper time, the system just rebooted.

Thinking that grub was broken, I used a live cd to purge grub from my system and re-install it. When I rebooted, I got the same initial problem: I get the "Ubuntu" loading screen, but then the screen goes black and the system appears to be frozen. Again, if I press escape to try the grub bootloader, the system just reboots.

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Ubuntu :: System Freeze - What Checks To Do?

Mar 26, 2011

Nothing too major here but today I had a few programs open and was doing a bunch of things and suddenly the system froze.

I am on 10.04 LTS -

Are there checks that I can do to see if everything is ok?

I had to turn the power off and re-booted and everything is fine, or rather, seems to be 100% fine - but more out of curiosity Id like to see if there are some checks that I can do.

I think that ubuntu creates a log of activity if I am not mistaken?

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General :: Random System Freeze ?

Mar 2, 2010

I'm running Fedora 12 with GNOME on an old Toshiba Satellite A15. From time to time I get a system freeze, where everything stops working besides the touch pad (I can move the cursor, just can't click on anything). When I boot up, I see an error message that it skips past before I can read anything, although I have spotted the snippets 'pci' 'error' and what appears to be the 0x at the start of a memory address. When I try and shut down the system (going either by command line or the System->Shut Down part), I get to the part where it says "Unmounting filesystems..." and then it stops right there. When I boot it back up, I get an error that says "A crash in package kernel has been detected."

The same happens when I boot up after the hard freeze. It seems more frequent when I have a heavy load on system memory, but for the most part it seems random. I've seen it crash after 5 minutes with only Pidgin or gedit open, I've seen it run for weeks with over 100 Firefox tabs, Pidgin, 3 documents, and GIMP running, but it seems more likely in the second scenario. It also seems to have a chance of freezing again within 5 minutes of rebooting (even if I don't touch anything after login). I ran Fedora 8 and Fedora 10 on this computer just fine, with most of the same system settings (copied my /home folder for each upgrade). I have a dual-boot system (XP/Fedora), with a third partition for data and a 200MB partition for the boot loader. The partition with Fedora is encrypted, and the crashing while trying to unmount the filesystem implies to me that might be the problem, but whatever it is, it wasn't in Fedora 8 or 10 (at least as far as I could tell).

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Debian :: Total System Freeze / What Is Causing It?

Jun 16, 2011

I'm experiencing constant system freezes, and was wondering which log file to view in order to determine what is causing it. I switched over from linux mint as it was giving me the same issues now being experience on my debian setup.

When my system does freeze, the keyboard is unresponsive (caps lock won't even turn on) and I have to use the power button to get out of it. The only thing that does work is my wireless mouse which I can still move around.

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