Networking :: SSH Crashes On Login While Any RSA/DSA Keys Exist
Apr 9, 2010
My company uses (as do many others) a common set of keys between the development machines. This has always seemed to work until recently... now the presence of any keys (server-side) causes the SSH server to crash, and the client immediately gets kicked. The interesting part is that the ONLY clients who crash the server are the ones with the common keys. If you are an unknown host, then you are prompted with a login, and you can get in. From the client you see this:
Code:
[root@localhost ~]# ssh localhost
Last login: Fri Apr 9 14:36:44 2010 from jjinno.foobar.local
Connection to localhost closed.
And from the server (the same box in this case) you see this:
Code:
Apr 9 14:37:59 cld10-2 kernel: sshd[19967]: segfault at 00000000000000f0 rip 00002b0bafc8d65b rsp 00007ffffd836c90 error 4
[Code]....
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Nov 8, 2010
I just recently bought a second hand netbook (HP Mini Mi 110) from ebay which use linux ubuntu as OS. I changed the previous username to mine but when i tried to login again...this warning pop out "your home directory is listed as: '/home/mazlin' but it does not appear to exist. Do you want to log in with the /(root) directory as you home directory? It is unlikely anything will work unless you use a failsafe session" so i click yes. then...
user's $HOME/.drmc file is being ignored. This prevents the default session and language from being saved. File should be owned by user and have 644 permissions. user's $HOME directory must be owned by user and not writable by other users. next i click OK, then... your session only lasted less than 10 seconds. if you have not logged out yourself, this could mean that there is some installation problem or that you may be out of diskspace. try logging in with one of the failsafe sessions to see if you can fix this problem. when i click ok, the login screen reappear again... how to use failsafe sessions.
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Dec 23, 2010
When we try to login using KDE we get the following error
"kstartupconfig4 does not exist or fails. The error code is 3. Check"
If we use IceWM GUI login works fine.
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Feb 6, 2010
I'm having trouble logging in with SSH using RSA keys.
client: Karmic
server: FreeNAS (FreeBSD) ip: 192.168.0.100
I generated RSA keys on Karmic, added the id_rsa.pub to the authorized_keys file on FreeNAS, then removed the id_rsa.pub from Karmic (this is a poorly documented but necessary step I learned).My Karmic username is shawn, FreeNAS username is shawnboy.from Karmic it prompts me for my RSA key passphrase which it should do, but after I enter it, it fails and moves on to prompt me for my password. I know this isn't a FreeNAS forum, but this works perfectly using Putty SSH with RSA keys on Windows XP, so I figure it's more appropriate to ask here than in FreeNAS forums.
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Apr 23, 2010
KDM starts up fine, graphics drivers (fglrx) are loaded correctly, but as soon as I login over KDM and KDE desktop starts loading, X crashes, restarts KDM, and I get sent back to the login screen.I am running a stock debian/lenny install (with 2.6.26-686 kernel) and no error messages in my Xorg.0.log.
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Jul 12, 2011
I cannot use several keys (1,`, q, a, z & Esc) on my keyboard.I have just installed Kubuntu 11.04, AMD64 version via Wubi. Everything went well w/o any errors. At 1st boot, I also logged in w/o errors, and then tried some apps for Office & Network and shut down. The keyboard was still alright at that time. However, The problem started on the 2nd boot after the installation. Those keys do not response in Kubuntu & Windows 7 login screen and even in my PC's BIOS setup.
My laptop model is Dell Lattitude E6410, core i5, Intel HD Graphics, WD HDD 160GB. And I installed on the other partition, not my Windows one.
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Jun 22, 2015
I was using Debian (jessie) testing for quit a while now, and since jessie is now the new Stable I wanted to update to testing again.
And I have an issue now, and I can't tell if it is a really a bug, or some new packages are interfering with my configuration files. Well to be honest I have more than one issue, but I am guessing that at least a few of them are related to the same issue.
Whenever I startup my Debian(testing) system, I get the gdm3 login prompt, I type in my password and hit Enter. Than there is a: “Oh no, something went wrong”-window for an blink of an eye (1-2 seconds).
After that gnome starts (almost*) normal .[gnome version 3.16.2]
*But: the gnome-sound applet doesn't start correctly. Alsamixer is running but Pulseaudio seems not to. When I start Pulseaudio manually after that everything with the sound is fine.
The most annoying thing is, that none of my Shortcuts work anymore ( Ctrl+Alt+T for terminal, Ctrl+<anything; Fn+<anything> screen brightness for example; hardware Volume Up/Down keys [Thinkpad x230t])
I checked my costume Shortcuts, Ctrl+Alt+T is set in the keyboard settings.
I have two monitors connected (its a laptop so it the build in and an external). I tried to disconnect the 2nd monitor and restartet the problem persists . Everything else seems to work fine (at least I haven't found any other issue yet). I would be glad to add some Log files, but I don't know exactly which one I should attach.
I attached the Xorg-log since it seems to me that something went wrong there:
115.284] (WW) Falling back to old probe method for vesa
[ 115.284] (EE) intel(0): [drm] failed to set drm interface version.
[ 115.284] (EE) intel(0): Failed to become DRM master.
[ 115.284] (II) UnloadModule: "intel"
[ 115.284] (EE) Screen(s) found, but none have a usable configuration.
[Code] .....
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Dec 16, 2010
I had openSuse 11.3 KDE4.4.4 installed and used the 1-Click install to get the nVidia drivers. However, this gave me the problems with Amarok and other applications crashing. I switched the system repos to use packman but that didn't help.
The solution on the forums seemed to be either recompile with an old nVidia driver or upgrade to KDE4.5 as most people were reporting to not see it under 4.5.
Upgrading seemed to be the easiest method, especially as there appeared to be a stable repo now.
I upgraded and now plasma-desktop crashes on login! Is getting the old nVidia driver my only option now?
zypper lr -d
Code:
# | Alias | Name | Enabled | Refresh | Priority | Type | URI | Service
--+--------------------------+-----------------------+---------+---------+----------+--------+---------------------------------------------------------------------------+--------
1 | KR45 | KR45 | Yes | Yes | 99 |
[Code].....
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Nov 22, 2010
I upgraded 10.04 to 10.10 (32bit), the upgrade process didn't go that well because first it didn't boot beyond GRUB. Solved this by unplugging my keyboard (my ubuntu is a server machine without keyboard or mouse, I like to use the desktop version through vnc). After that is booted to shell, which was not so nice either. This time it was the legendary nouveau driver which sorry for my language I will never install again (caused major problem twice already). Installed nvidia drivers and got a display for X this time and it booted nicely to login screen.
My problems have arised since the upgrade, the system will randomly "crash" and go straight to login screen, ending my current session. Sometimes my mouse cursor even changes to the X-mark. I can't see anything in gdm, x11, syslog etc. that would explain the crash. So far I've found best log from .xsession-errors which is here:
[Code]...
I got a lot IPv6 errors on the same log too, but those were caused by utorrent+too old wine. Didn't remember that upgrade deletes/disables extra-repos and I was running the stable wine (1.2.1) instead of the latest one (1.3.7). Upgrading wine solved the error from utorrent IPv6 connections.
So any ideas what I could do to fix these crashes? I'm not so much into clean re-install because of all the configuration I'll need to do then. I do have home on a separate partition but there's lots of software to install and configure.
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May 1, 2011
I saw some pictures of Kubuntu online and thought it looked awesome. I installed it from Gnome using the command "sudo apt-get install kubuntu-desktop". It installed fine, no errors. I logged off and picked Plasma Workspace or whatever its called from the menu and it showed a black screen for about 7 seconds, then showed a clear bar with a hard drive icon fading in. Then it crashed back to the login screen. I rebooted and tried again: same thing. I installed xfce and it works perfectly. Gnome still works. Ditto for Unity. But kde keeps crashing. PS: Graphics card is an ATI Radeon.
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Dec 22, 2009
After updating some of my packages to the newer versions, I restarted my computer so that I could experience the full effect of the update. When I attempted to login, Plasma Workspace crashes and nothing loads. I am forced to use another window manager to login into the system, and when I investigated into this problem by typing plasma-desktop in the command terminal, I receive this error:
Code:
plasma-desktop(18223) getComponent: Failed to connect to the kglobalaccel daemon QDBusError("org.freedesktop.DBus.Error.NameHasNoOwner", "Could not get owner of name 'org.kde.kglobalaccel': no such name")
explain to me how I can fix this error so that I can finally go back to using KDE4?
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May 8, 2010
I upgraded Kubuntu to 10.04 LTS. At login screen I enter my password to login once that harddrive icon comes up it immediatly gives me a black screen then goes back to the login screen.
ive tried deleting everything in /tmp/. i did a sudo dpkg --reconfigure -a, Gnome works perfectly well.
**Just noticed that on grub screen it displays Ubuntu**
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Apr 17, 2010
I don't know if this is a configuration issue or a hardware issue, but I have a Kinesis Advantage USB keyboard and for some reason the F3-F5 keys aren't responding as they used to. They don't respond to anything and, when I tried using F5 on Emacs, it said <XF86AudioNext> is undefined, so I guess it's a weird mapping problem.
Any idea how I could remap them to the original meaning?
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Oct 10, 2010
After upgrading my netbook (Eee 1005HA) from Ubuntu Lucid to Maverick, I can log in okay, but it crashes back to the login screen a couple of minutes after logging in, after the desktop has loaded. I haven't been able to find anything in syslog/dmesg/etc. about why this is happening, but it isn't happening on my other laptop which I just upgraded to Maverick as well.
Edit: memtest86+ showed no errors and the live USB desktop works fine.
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Dec 9, 2010
have been trying to figure out the .basrhc files and decided to change some of the permission of those files. The outcome is that, when i restarted the computer, i try to log in as a user but once i typed the name and login only a black screen can be seen, and can not do anything. I restart the computer and try to log in as a root, the same thing.
Next time I restarted the computer and press ctrl+spack+backspace, and for less than 2 seconds i am shown the console windows and then automaticaly comes back to the X windows.It seems that console is crashing too. I am using fedora core 8 and i ve got information that i would not like to loose.
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Jun 27, 2011
Just wondering if Ubuntu has an Accessibility equivalent for sticky keys and mouse keys.
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Apr 7, 2011
I'm running Debian (Squeeze) and I have a toshiba portege m700. It has five buttons on the front just under the screen, which are the only ones accessible when you flip the screen over into tablet mode. One of them is for rotating the screen, and another is for switching to external display. I want to remap the remaining three to control, alt and super so that I can use shortcuts with the stylusThe problem is, when I used showkey to find out the key codes, I found out that each button generates more than one key code:Button 1:
key 126 press >> super_r, although this is distinct from the actual super key (125)
key 7 press >> 6
key 7 release
key 126 release
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Mar 1, 2010
Not sure this is correct place, but I think it's related to network. I'm using CentOS 5. I installed nscd successfully using yum. But I can't start nscd. It shows [ OK ], but stop right away, and I can't found any nscd process.
/var/log/nscd.log is empty, /var/run/nscd/nscd.pid has a PID that doesn't exist, and here's /etc/nscd.conf
Code:
#
# /etc/nscd.conf
#
# An example Name Service Cache config file. This file is needed by nscd.
#
# Legal entries are:
#
#logfile<file>
#debug-level<level>
#threads<initial #threads to use>
#max-threads<maximum #threads to use>
#server-user <user to run server as instead of root>
#server-user is ignored if nscd is started with -S parameters
#stat-user <user who is allowed to request statistics> .....
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Oct 13, 2009
using a terminal
logged into userMan remotely
[code]
scp /file.txt xxx.xxx.xx:/home/userMan/
[code]
Is the syntax above correct?
I'm trying to copy /file.txt from local machine, to server with userMan
error: /file.txt doesn't exist
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Jan 20, 2010
When i try to share a folder from linux ubuntu desktop i am facing a problem a error reported are as follow:
loaded services file OK.
ERROR: lock directory /var/run/samba does not exist
ERROR: pid directory /var/run/samba does not exist
or i have no permission to open samba
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Aug 3, 2010
ubuntu 10.04 disable network-manager. I am add : route add default gw 10.0.0.5 Terminal give me a Error: SIOCADDRT: process not exist
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Jul 31, 2009
Is it possible to set up an OpenVPN without having to issue keys or certificates.All tutorials I found seem to use them.
I want just a basic username/password approach - I don't care that much about security obviously but is it at all possible?
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Feb 12, 2010
I want to use a static ip address on my wireless network but when I click configure in network tools it keeps telling me The interface does not exist and to Check that it is correctly typed and that it is correctly supported by your system
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Dec 12, 2010
Using SSH all the time on my home network. I use ssh-keygen and ssh-copy-id to generate and then copy the key file. On one of my computers I've changed the default ssh port and see no way to copy the key without reverting the configuration to port 22 temporarily. This is not a big deal and would probably take less time than it has taken me to type this message.
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Feb 20, 2010
So I have sshopen-server installed on a few machines on my home network. I just rebuilt one of the machines and gave it the same hostname and the same ip address that it had before I rebuilt it. But when I go to connect to the machine now I get this error.
[Code].....
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Sep 30, 2010
I've been searching for a while in forums about the issue I'm facing but couldn't find anything clear, or at least my net search skills are pretty lame. I'm facing a problem with prompted user password in a SSH chain connection when using authorized_keys.
I have: (1) Client - (2) Server - (3) Testing machine (testing machine is connect to Server via usb network)I've created keys for Client and Server, and updated authorized_keys in host machines with the key values: Testing machine has Server public key, and Server has Client public key.Until now everything is fine, if I try to connect via ssh the user password prompt is not shown since public key is found in authorized_keys.
For example: from Client: Code: ssh server Works fine, no password prompt.from Server: Code: ssh testing_machine Works fine, no password prompt.But if try to do that from Client only: from Client: Code: client:$ ssh server Works fine, no password prompt.from Client: Code: server:$ ssh testing_machine Asks for password.Bellow the verbose output from previous ssh command:
Code: ssh -v root(at)192.168.100.2
OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 192.168.100.2 [192.168.100.2] port 22.
[Code].....
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Feb 17, 2010
I run a number of distros. I often ssh into the machine. However depending on which distro I am using, the RSA key is different.So what I will do is delete ~/.ssh/known_hosts on the machine I am using and ssh in. what i was wondering is whether using ssh-keygen and creating the same passphrase for the distros would remove this problem?
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Jul 5, 2010
Since I have installed Fedora 13 it seems that I can't connect to WLAN APs which aren't secured by WPA. I'm surprised about the inserts to the messages logfile:
[Code]...
Most surprising insert for me: Jul 5 20:43:21 nbtobiaslnx NetworkManager[1328]: <info> Config: added 'key_mgmt' value 'WPA-PSK' Is this the reason for my problem? I use KDE and Network Manager for managing my networkconnections.
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Jul 14, 2011
Bind on Fedora 14 is driving me crazy.I am getting messages when I restart BIND stating it cannot find the managed-keys.bind file but it's right where it's suppose to be, and the directory is writable.
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Apr 19, 2011
I am running Karmic on a Lenovo s10e. I have been trying to reconnect to some wep encrypted ap's. There have been recent changes to the routers. In some cases my mac is barred, also some have changed their mac as well. Typical behavior of network manager on failed connection is to ERASE THE WEP KEY.
I call this worse than a bug, I really get tired of typing in the same key over and over! I think there is a basic misunderstanding about what the software is supposed to do. Even if there an error in the key, having the old one there to edit would be a huge help. IN MY PROFESSIONAL OPINION, NETWORK MANAGER SHOULD NEVER, EVER ERASE THE WEP KEY. Typing in 26 hex digits (for a long key) is needless aggravation.
If I am doing something wrong, someone please tell me. My point still stands. Even if I am doing something wrong, THERE IS NO EXCUSE FOR ERASING THE WEP KEY.
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