Ubuntu :: Login Authentication Failed And Cannot Enter Recovery Mode?
Aug 31, 2010
Earlier today I was setting up ssh on a new computer. I modified permissions on the Passwd folder to complete the setup. I few hours later when I went to sudo something in the terminal I received the notice of an incorrect password (after using sudo prior to this), even though it was typed correctly.
I tried to restart the computer to solve the issue, but was met with an Authentication Failed message, regardless of the user I tried to log in with. I was hoping I could log in with recovery mode but was unable to do that as well. I have searched a substantial amount and have not found a solution. Could this be an issue with permissions on either the Passwd or Shadow folder? If so, could these be changed if I ran a Live CD?
I messed up my video drivers and now can't get into recovery mode. Pressing the shift key isn't working. All that happens is the splash screen appears in faded looking colors and then fades to white.
I've got an ASUS N61 laptop with an ATI Radeon 5730 graphics card. I just upgraded to 10.10 from 10.4 and was trying to install the open source video drivers. I must have messed something up and can't get to the terminal now.
Ubuntu cannot boot. says Starting system V runlevel compatibility [fail]it is after replacing xorg.I want to enter in recovery mode. But when i try escape it just enters bios. if i try holding shift it just does nothing.So how to enter recovery mode in ubuntu 11.04 i just cannot get to grub menu.
in Ubuntu 10.04 I would like to enter in recovery mode, so I restarted computer and pressed <Esc> key just like in any previous version, but nothing happens Ubuntu still starts to boot.
How to enter into recovery mode in the latest version of Ubuntu?
I broke sudo when I wrongly edited a file in /etc/sudoers.d in vi(did not use visudo :-().I read that I could fix the same by rebooting into the 'Recovery Mode' by selecting the same from the grub menu.
However I'd earlier disabled the showing of the grub menu by editing /etc/default/grub. As a result I can't seem to go into recovery mode to fix my broken sudo.
I installed lucid last week, and this morning installed some updates that appeared in update manager and then started having issues with permissions so I rebooted. Now when I try and log in I get the message Authentication Error Normally this wouldn't be a problem I would reboot again hit ESC just before loading Grub appeared and go into recovery mode and change the password for my master user. But I never get the chance to press ESC, and even I hold the key down from the time my BIOS flash screen is up, I never get the GRUB menu.
how I might try using Recovery Mode to fix whatever is wrong? When i'm booting, I no longer get the gui login prompt. Instead I get a Terminal-like login prompt. I can login and everything but I'm a noob and don't know what to do. I booted to recovery mode and selected fix broken packages but this didn't fix the problem. is there anything else I can try?
the laptop of my friend runs ubuntu through wubi. The system suddenly freezed and she restarted it manually. After doing a check disk and automatically repaired some packages(unfortunately she doesn't remember what exactly, only just inode information appeared), she can't log in as when she types her username and password the answer is authentication failed. We tried to change the password through recovery mode but nothing happened.
1. Do you have something to propose to solve the login problem? 2. If not how can i access and back up her ubuntu documents through windows?
Now i will try to explain my problem.I just installed fresh 11.04 openSuSe 64bit.After doing all the configuration I rebooted and tried to login.Nothing happened.Googled some things, tried ctrl alt f1 and login as root, also tried to login as root, even changed my root password to be sure.Still, nothing happens, except for the thing that everytime I try to login as root it says authentication failed, but if i type my password bad it says bad password.
I've got a, as it seems to me, strange problem.I've inadvertently deleted my user from the group admin so I'm in the same situation of a lot of other users (read a lot of messages about it).My problem is that when restarted in recovery mode there is no way I can choose the 'drop to the root shell' or similar in the menu.The menu appears for a second and then I've got an empty screen. If I press a key I've been requested for a username and password that of course is not what I need.
I attempted to install Catalyst 10.11 for my ATI HD 2600XT and the system now only displays lines and a large block of pixels where the mouse would go. CTRL-ALT-F1 kills the system and does not provide a command prompt. This is a single installation, not dual-boot, but there is no Press Esc to access the Grub menu during startup so I cannot choose safe mode. I attempted to get into Recovery mode using the flash drive that I used to install the system and it tells me there is no Recovery kernel (I used the 64-bit Desktop installer, not alternative). Does anyone know an alternative to get into the Grub menu other than ESC during bootup? Alternatively, do I need to download the 64-bit Alternative ISO and create a new boot disk with it so I can access Recovery mode? Is there something else I'm not thinking of?
I accidentally chose the "recovery mode" and now i dont know what to do. What commands i have to enter to go back to normal ubuntu mode with graphic etc?
I have never in a year had a problem with this d-boot system. Two days ago I tried to boot into ubuntu like every day. It started to load normal, went to the ubuntu logo and paused for about 15 seconds and posted this under the logo:
One or more of the mounts listed in /etc/fstab cannot yet be mounted /: waiting for /dev/loop0 /tmp: waiting for (null) /boot: waiting for /host/ubuntu/disks/boot Press ESC to enter a recovery shell
I have looked everywhere and tried so many things, I can't look any further. All I have been doing for two days is trying to boot this system.
If I am running a script, let's say a install script. Is there a way to make Su repeat authentication rather then just returning "Authentication failed" and continuing the script?
I just finished installing 10.10 on my pc. the problem is that i cant login to the desktop i enter the password, the login sound plays and im stuck looking at the wallpaper. nothing else. i tried logging in safe mode and it worked. how can i get it to work normally?
pc specs: Pentium 4 2.6 ghz 512mb ram ati radeon 9600 graphics card
I just bought this desktop from my friend and it runs win 7 and ubuntu 10.04. it worked very well the first two days until I changed the hostname of the system.
I did like: hostname myNewName
And everything worked fine. The problem now is when I start ubuntu and and reach username and password screen , I enter my password to login the screen becomes black and return me again to the screen where I put my password again. If I entered wrong password , the system message stating wrong password. On the other hand, when I try to run ubuntu from live-cd I can login easily and access my account.
My friend told me he removed Naultius package and reinstall it for some reason before he gave it to me. Note windows 7 is working properly.
I have installed Ubuntu 8.04 inside windows and every time I go to the terminal and type "su" it asks me for a password. Well the password I set before the install doesn't work, it gives me an authentication failure. I thought that since it was inside windows it didn't set me as a root user. I go to user groups and I see my name there and then "root" above it, but its grayed out. Is there a default root password I can enter?
I need to enter credentials for a system wide proxy, on a fresh install of Kubuntu 10.04. Everything hunky dory, but: Network Settings->Proxy->Authorization has 'username:' and 'password' grayed out all the time; even at 'Manually specify ...'. The only 'alternative' (not to chose from) is 'Prompt as needed'. But I don't get any prompt, and so I'm out of luck. To me, this looks like a bug. Because one should be able to enter a username and a password there, for good.
I just installed Fedora 12 on HP Pavilion (dual boot with Windows vista). I made it all the way through the installation and created my user account. A few seconds later I got the login screen asking for my password. I enter the password and get "Authentication Failure."
The name that shows up on the login screen is my full name, not the user name that I created. Is that wrong?
I have no idea what happened to my OS(ubuntu10.04).it doesn't give me any option to enter my login name & passwd.i just get a blank(default) login screen.last time when it worked,i was trying to install GTK+2.8,but due to my mistake i deleted glib using cmd (sudo apt-get purge glib)and after that i even tried to launch terminal but it failed to launch.also tried to play media files using vlc but it didn't work.so i tried to restart my os and finally got stuck in the problem.i have no idea what to do,please help.Is there any cmd to see what problem occurred or which package is missing.
My problem is that I am trying to install an Nvidia driver on ubuntu 10.04, and I can not access my console mode by pressing ctrl alt f2. When I press that keystroke my cursor will disappear till I press alt f7.
I've RHEL and windows installed in a single system. First I've installed RHEL then windows xp. Now to install grub how do I enter into rescue mode without any CD/DVD? Do we have any option?
ok so i have been haviung the same problem for a while now and it is starting to **** me off, with every distribution of ubuntu i am getting thuis stupid message when i log in it is ionoly every once i a while that i get it but saince i have upgraded to 220.04 cannot fix it. i could fix it befor pretty easily, the probklem is when i get t o the login screen i get this generic login menu whne i attept to login i get this message somethiung like power management is not installed correctly. like i said b4 it was easy to fix, all i would do is to go to the ubuntu recovery thing, which is apparently not available ion 10.04 it does not evn give me a choice which to boot how do i get to recover mode in ubuntu 10.04?
Upgrading over the weekend, but it failed, and suggested running dpkg-reconfigure -a
I couldn't launch any terminal/xterm windows, and couldn't login via ssh (kicked me out with xmalloc failure) or through a virtual console (showed garbled characters)
So I had to reboot.
Now the boot process -- I've tried recovery mode for all othe kernels I've got installed, but all fail in the same way:
I run 9.10 from a live usb with persistece, and got /etc/sudoers awfully messed up. now i'm told to fix in through 'recovery mode', but i don't think live usb has one. is that true? what about my sudoers? is there another way to fix it?
Afraid I'm an utter newbie. I'm using 10.04 64 bit. I only noticed this after I tried to install the NVIDIA driver and all my ubuntu os'es blackscreened after restart. Because I couldn't even access recovery mode, I ended up reinstalling ubuntu, overwriting the old root.I thought the problem was due to the driver, but it's even now persisting. I can run the terminal (within X?) but if I try ctl alt <F1-6>, the screen just freezes until I do ctl alt F7. Furthermore, recovery mode still leaves a black screen after the initial loading text. I need it to work before I attempt reinstalling the NVIDIA drivers again, as I don't want to reinstall the OS and all the programs.
Sometimes it feels like I can do stuff in recovery mode, like Ctl Alt Delete or sudo shutdown, but sometimes not. Not sure if this is related, but grub also lists windows vista and windows recovery as the opposite they should be (I thought my windows was completely screwed until I tried windows recovery).
I have a HP mini 2133 with Ubuntu 10.04 NBR installed, but because the CMOS battery went flat and the date on the BIOS got reset to 1980, I now get a failure starting the machine (Superblock failure: Last mount time is in the future). I've already googled on this error, and the general advise seems to be "run fschk and let it complete", but my question is...I don't get a grub screen come up when Ubuntu boots, and Contrl/Alt/F* doesn't bring me to any login windows. So how do I interrupt the startup, and get to a login window before I get the mount error.
