General :: Lenny Freezes - CTRL+Alt+Backspace Does Not Work - Diagnose ?
Apr 2, 2010
I recently switched from Windows XP to stable Debian w/KDE on my work dell B120 laptop. I have been trying to diagnose freezes. In the evenings I have been leaving an SSH connection to my home computer. I leave a command running that writes the current time to a file every ten minutes. The past two nights it has stopped writing the time after a couple hours (not at the exact same time), and I am no longer able to ssh from my home computer to my work computer.
When I get back to work, the work laptop is frozen. CTRL+Alt+Backspace does not help, neither does CTRL+ALT+F1. Ctrl+Alt+SysRq works sometimes. It has not yet frozen while I have been present.
I tried disabling the screen saver and monitor power controls in KDE, thinking that those only come on when I am away, so they might be the cause. But it did not help.
I took the last time recorded by my ssh connection and looked through the logs trying to find something that happened at that time, but the only event occuring around the time the SSH connection dropped was a chron job that runs every hour. As far as I can tell, the chron job does not actually do anything but write to the log each hour.
So obviously I need to post more information. What would be helpful? Which log or configuration files might contain clues?
I see these lines in my logs:
kernel: Kernel logging (proc) stopped.
imklog 3.18.6, log source = /proc/kmsg started.
It appears at 6:25 AM each day between when the SSH connection drops and when I arrive in the morning. Do I need to restart logging?
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Jan 18, 2010
I've tried without luck to get ctrl-backspace working to delete the previous word in bash. I edited my .inputrc and tried the following:
"C-": unix-word-rubout
Control-Rubout: unix-word-rubout
I can make it work if I change it to some other sequence (Control-j: unix-word-rubout makes ^j erase the word), but I can't make it work with backspace.
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May 26, 2010
I'm having intermittent problems where the screen will freeze in Ubuntu. I've tried using Ctrl + Alt + Backspace to restart the X-server, though this does nothing. When the freeze occurs, there's a small square of black dashes around the mouse pointer - maybe 1 inch in size. These dashes look a lot like a 2d barcode. The rest of the screen looks normal, but I can't move the mouse and none of the keyboard shortcuts work to do anything. However, music that I begin playing before the freeze continues to play, which seems to indicate it hasn't stalled up completely.
I've noticed a similar freezing problem when I'm using Windows 7. That is, I see the same barcode like dashes around the mouse pointer when it freezes up. So I'm guessing it's either a driver or hardware problem. I thought if it was a hardware problem though, the whole computer might stop working (i.e. music would stop playing)? The video card I am using is an Nvidia, and I believe it's in the 7600 range. In Ubuntu I have the drivers for the card set to the latest available (proprietary). Ideally I'd like to be able to continue using the proprietary drivers. Is there any known issues with the drivers for this model graphics card
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Mar 5, 2009
The default is forbidden in F10.
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Aug 1, 2009
On fedora 10 and backwards you could use Ctrl+ALT+Backspace to restart X, this was massively useful in resolving any issues with hanging x processes and so forth... without losing session data.... it seems to not work in fedora 11...
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Feb 8, 2010
I am an Ubuntu/Linux noob, I installed Ubuntu a few weeks ago, and it sometimes gets extremely slow and crashes. I can't get out of the crash with ctrl-alt-backspace and I have even tried the key combinations suggested here to no avail.
Ubuntu 9.10
Computer:
IBM T42
mem 500 MiB
Intel Pentium 1.70GHz
The crashes usually involve Firefox being open + another program ( could be pdf reader, calibre, or something similar). I try to keep the amount of open Firefox tabs below 5 as it gets very, very slow (that was one of the reasons why I decided to install Ubuntu, in the old windows XP installation Firefox was also excruciatingly slow).
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Nov 28, 2010
" Mark the start of the text with "v", "V" or CTRL-V. The character under the cursor will be used as the start.""With CTRL-V (blockwise Visual mode) the highlighted text will be a rectanglebetween start position and the cursor."I can mark the start with "v" or "V".But it doesn't work when I push ctrl+V.
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Aug 19, 2009
used to use this feature alot in F10 ... not sure... but i can't find it in the keyboard shortcuts prefs
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Jan 27, 2011
Since I wasn't able to figure out how to enable ctrl alt backspace in kde I thought I would explain how to do it from the command line. Open /etc/X11/xorg.conf as root. Then add this to the file.
Code:
Section "ServerFlags"
Option "DontZap" "false"
EndSection
http://fedoraproject.org/wiki/Fedora..._release_notes
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Mar 2, 2011
I have problem with some applications in X. When I want to unlock Xscreensaver it just meses my X and I must Ctrl+Alt+Backspace. I installed slock and thought I solved the problem that way, but same happened with Xpdf.
lspci:
Code:
01:05.0 VGA compatible controller: ATI Technologies Inc RS690 [Radeon X1200 Series]
uname -r:
Code:
2.6.35.11-smp
[Code]...
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Nov 11, 2010
I just installed Ubuntu 10.10 x64 and already am really annoyed by Firefox, which freezes my mouse after changing a tab (with ctrl+tab, alt+#) or closing it (ctrl+w). After about one second, i can continue working as usual. Changing Tabs by just clicking on one does not freeze anything...Maybe some of you would think now if I am crazy because of complaining about such a little thing, but it is really annoying if you are used to work fluently with ff.Edit:I today noticed, that not only shortcuts in firefox, but all Hotkeys freeze my mouse for a second. For examle ctrl+c, ctrl+v, super+e or anything else.Do you have any Idea what causes this behaviour? Reinstalling ubuntu didn't change anything
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Nov 6, 2010
After loading all the apps I use last night with a working FC14 x86_64, I powered up this morning and nothing happened after starting atd.1 try an alternat kernel same effectstart in init 1, OK go to init 3 OKran startx .. failedlook for xorg.conf.. no fileNow if Iwas still running mandriva , I would have typed mcc and bought up the control panel so I could have sorted out the Xorg problem, or tried. There really needs to be something like this.I found that gdm was not installed so installed it.It will now boot up to the login screnn, but wont accept my passwd.restart in init 3, login as root and add another user and set the password for that user.I also rest my passwd as welll.boot up again and get authentication failure on both users, and I cant login as root as someone removed that feature.
Also I can't use Ctrl-Alt -backspace to killl X so I have access to CLI so I can login there and run startx.I suspect several gnome packages have been removed/lost as I use lefthand mouse settings and the mostsetting are back to default.All I have is a live CD to gain access to the forum, and I only have one computer.There really needs to be a fallback to one of the smalll DMs on fedora so in situations like this you are nt forced to use CLI, thats if a new user would know how to access it. As there is no bootsplash, you have to already know to hit return and wait for the bootsplash.
IMO this a is a seriouss flaw, in what otherwise is a good OS.In the meantime I'll try and install XFCE to get X running, but I will need some help getting gnome back.I'll load gnome-panel and see if yum will pick up the rest as depemdencies.I hope this isn't a bug, as to lost the DM after the first machine power cycle is fairly drastic---------- Post added at 08:52 AM GMT ---------- Previous post was at 08:18 AM GMT ----------I resorted to yum install gnome-*which loaded 255 packages, including gnome-desktop, gnome-common, all the gnome applettsThis wasn't just one or two packages corupted, it was removal of the DM altogetherSimilar effect to running "rm -rf gnome-* "
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Oct 3, 2010
anyone has a clue why 'ctrl+a, k' nor 'ctrl+a, :kill' doesn't work for killing one of screen windows? Other screen's commands invoked with 'ctrl+a'seem to work.
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Feb 3, 2010
I just spent a few days ripping out all the broken/buggy apps that are in the opensuse 11.2 official repos so I can finally get working software(openoffice, thunderbird, wine, eclipse, rubygems, rails, and a few others required getting the "official" versions from their respective websites to avoid strange behavior and outright broken functionality).
All of which makes updating more annoying and time-consuming. Why are opensuse packages so different anyway? Anyway, the last thing that I have noticed to fix is Konsole. For some really bizarre reason ctrl+z and ctrl+c do not work without a third keystroke: enter.Maybe this is something new with the KDE team, since they seem bent on making simple things that already work more complex, but given my experience with crappy packages in the suse repos, I am thinking this is the problem. I have looked over all the config settings that I can find and nothing fixes this affront to productivity.
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Dec 27, 2010
I am doing a project on rdesktop. My aim is to setup a write/copy protected session. I have made rdesktop connection between two Linux machines using Xrdp.Next I want to disable the ctrl+x,ctrl+v keys and the cut and copy option in mouse right click at client side
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Jan 27, 2010
I am using opensuse 11.2 on my dell studio 14 laptop and to my surprise the key combination for bringing up text based console does not function as expected.when I press ctrl+alt+ fn keys I am greeted with a blank screen and ctrl+alt+F7 brings me back to the GUI plasma desktop.Does this have to do something with the acpi=off thing I did for booting successfully into linux ( without this option, the screen would go off and not respond to anything ... physical restart was the only option). although my system starts off without any fuss, OS does not detect the battery of my laptop.
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Jan 13, 2011
ctrl+alt+[f1 -f3] switch doesn't work, but back to ctrl+alt+f7 works normal. When i switch from ctrl+alt+f7 to ctrl+alt+f1 I see that on the dash flashes on the screen.
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Oct 29, 2009
Ctrl+alt+(f1-f6) does not work..Am using VMware just for Practice purpose.
I have installed Redhat Enterprise Linux 5.But Whenever i start my System(VMWare)it shows the GUI mode.When i press Ctrl+alt+f1 etc...i could not get the text mode.
I changed the default setting in /etc/inittab but when changed it logs on to text mode and i could not get GUI mode when Ctrl+alt+f7 is pressed.
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Sep 2, 2010
Ever since I made the switch to Ubuntu I have had a problem getting back to the X Windows environment from Virtual Terminals. Control+Alt+F1~6 work fine but when I try Control+Alt+F7 my screen freezes.
I have been trying to find a solution to this problem but it doesn't seem to be affecting many other users. Not sure if it matters, but I'm running 64-bit Lucid Lynx.
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Jun 28, 2011
I use Ubuntu terminal/putty to 'ssh 1' my routers, but backspace does not work like normal. with telnet and ssh 2 its perfect. Can any one help me how to fix this issue?
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Dec 12, 2010
I am using windows XP as my host machine and vmware workstation 6 to install and run RHEL 5. I have set the inittab to runlevel 5. While i am in gnome, i tried pressing
Ctrl-Alt-F3 and nothing happens. I searched the net and found that i should do this
Ctrl-Alt-Shift-F3. It worked and kinda throwed me to shell mode. When i issued runlevel command it showed me
N 5
Now when i tried to go back to gnome by pressing
Ctrl-Alt-Shift-F5 it didnt work !! i tried all other combinations
Ctrl-Alt-Shift-(F1-F5) but no response.
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Feb 14, 2010
why does backspace not work to go back in firefox? is there some plugin im missing or something... or is it just not included.
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May 20, 2010
the " backspace " button on my toshiba A 200 laptop works when i use it to navigate the ubuntu system folders such as documents, movies, music, computer etc ..however, it doesn't work at all within firefox !is this normal ? how can i get it to work within firefox so as to be able to make liberal use of the keyboard ?
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Nov 28, 2015
Backspace doesn't work with nautilus file manager, what to do?
If i press backspace, it doesn't redirect to the previous location.
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Jan 25, 2010
lenny freezes 100%, ie only help is to turn off power, reboot and fsck.this happens often with firefox loading a pdf-link. Firefox 3.5.7 has newest nppdf.so, libjavaplugin and libflashplayer.Where do i look first? which log files? I have 2Gb main mem.
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Jan 31, 2010
#memtester 2000 ==> ... trying mlockAt this point lenny freezes, i have to turn power off and reboot with fsck. FF also freezes lenny with the adobe-pdf-reader plugin. Memory problem.
bozo-PC:/home/eric# cat /proc/meminfo
MemTotal: 1946228 kB
MemFree: 1544536 kB
[code].....
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Feb 21, 2011
I am trying to install Lenny and get to the point where it says to select programs at which it freezes.
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Jan 5, 2010
I have 3 layouts: USA, Russian and Hebrew. In Hebrew the W key is mapped to apostrophe, so Ctrl+W in Hebrew layout doesn't close tabs in Firefox. There is no workaround for it as I see by now, so I am trying to get it work this way:I want to map Ctrl+W in Hebrew layout(which is actually a Ctrl+') to be a Ctrl+w. Here is what I got from xmodmap:Code:$ xmodmap -pke | grep 25keycode 25 = w W Cyrillic_tse Cyrillic_TSE apostrophe WAs you can see, there are pairs for each layout, each pair tells what happens without and with the Shift key pressed.
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Aug 19, 2009
i am using gcc 4.3i need to recognize ctrl+c,ctrl+l,ctrl+d in my C program without terminating the program when i get a ctrl+c...
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Aug 3, 2010
I have tar files where I archive about 250 files, each about 80 Mb, without compression. In a few cases tar is only returning some of the files. For example, when doing an extract of the file using:
tar -xvf 356.tar
I got only 103 files, when it should return 255 files, but tar does not give me an error. Furthermore, the tar archive is 15.8 Gb while the extracted folder is just 6.4 Gb. The tar files were created using:
tar -cvf 356.tar 356
where 356 is the name of the folder. All the steps where done in the same machines, under Ubuntu 6 and newer. Any ideas if there is a way to recover the files that are not being extracted?
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