General :: Cat Made The Screen Permanently Unreadable
May 2, 2011
Kernel 2.6.21.5, Slackware 12.0. I have a file named juan34. I was sure it was a plain text file so, instead of running first 'file juan34' I directly did 'cat juan34'. The result was everything echoed to the console are the ascii caracters greater than 127 decimal. In other words, the screen is unreadable.
I typed 'exit' but this did not remedy the situation. The login prompt was written with these strange chars. In another console I'm running a program which I estimate will terminate execution in 20 hours or more, so I do not want to reboot the machine.
When I worked in MS-DOS, I had (made) a program that reinitialized the 6845 CRT controller, fixing this problem (for this could also happen under that O.S.). But, if there is a solution for MS-DOS, all the more so there must be one under unix/linux.
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Oct 27, 2010
Is there a way to permanently mess up a pre-made dvd?
i would like to be able to mess up a dvd through software, that way there would be no proof of tampering. (i want a few new movies on blueray )
i would like it to run in ubuntu, but a windows program is fine.
these are factory dvds btw, not dvdrw.
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May 2, 2011
Just upgraded from Maverick 10.10 to Natty 11.04 and went smoothly even with the new Unity desktop. But when restarted from shutdown, the screen was jumbled and was only just able to restart (the screen jumbled but could just make out the dialog boxes. Then logged in in safe mode. Ever since, have only been able to run in the 'old' Ubuntu without features mode. I have an oldish HP/Compaq nc6000 with 20Gig disk and 675Meg memory. How or what went wrong since it seemed to run fine just after the install.
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Sep 7, 2011
Sometimes when I use aptitude to install or update packages I get an SSH screen such as the below that is mostly unreadable:
Package configuration:
When it happens it looks like there is a selection of options I cannot read, one of which is highlighted, for which I am expected to choose one of. In the above example "+ee-_c¦--e++" was the highlighted option in the list.
How is this fixed to be made readable every time?
When I invoke aptitude without any arguments the screen is readable and looks just like it should.
The SSH window is displayed by my local Windows XP. The remote OS is Debian 5.
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Sep 16, 2015
I'm trying to install Debian 8.2 on my laptop. The "GNU/Linux UEFI Install" screen is fine, but whatever option I choose the screen got stripe like this [URL] .....
I can still use my keyboard, but the screen is unreadable. I was trying install with DVD/Netinst ISO with USBWriter, but it still same. My laptop use ATI 8750M Graphic Card.
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Jun 18, 2010
I Installed Ubuntu x64 10.04 on an Hp HDX 16 with Nvidia 9600m video card. I am having an issue that the screen is very dim and it gives one a headache to read it for long periods of time, especially in a bright room. I can adjust the contrast and brightness from the nvidia control panel but I can never get it just right it will either look washed out or just muddy. Everything was fine in Windows 7 a day or so ago. Is this a backlight issue?
Any suggestions on how to proceed?
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Jul 6, 2011
I've got a new installation of 11.04 server. Everything was apparently working just fine, and then the system hung. I rebooted, and everything looked good up to the login screen. After I typed my password, the screen started looking good, and then got all fuzzy and messed up (nothing was readable). The only way I could get anything back was to reboot. (I am able to work via ssh at the command line, though). As the graphics were fine before (using GDM), and since the GUI looks fine at the login screen, I know the system can do it.
I tried to find information on what might be going wrong, and haven't been able to find anything that fixes the issues. I thought there might besomething in my config, so I tried logging into another account on the system that doesn't have any user-level configuration, and got the same result (the machine's main purpose is to be a mail and file server). So it appears to me that something is happening to the graphics configuration after login when GDM loads. What I need to change?
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Jan 17, 2011
I'm using Slackware 13.1.
Whenever I logout of KDE and go back into console mode, the characters at the console screen become unreadable gibberish. Is anyone else having this problem?
I can ctl+alt+F? to work at another console screen, but the ctl+alt+F1 screen remains unreadable until I reboot.
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May 10, 2015
It started many months ago on wheezy. Occationally I got horizontal stripes on my screen when I used my system for many hours switching from one application to an other. Now, after I installed Jessie this problem hasn't gone away, but got worse. Now I don't need to use my system for hours before I encounter this effect. Different parts of my screen get unreadable without any predictable pattern.
Friens of mine argued this might happen because of a broken RAM chip. I bought my Acer Extensa 5220 in 2008. I'm not sure if it's worth to search for new RAM fitting into this old notebook.
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Apr 18, 2009
I just downloaded Fedora 10, burned the CD, installed the program, etc. Everything went just fine, but after rebooting the screen turns gibberish, totally unreadable. I now it's the video card, NVIDIA but how do I fix it? I installed Fedora 8 which worked just great, no issues. My machine is Intel Core 2 7300, Geforce 9600GT my other machine, is AMD-64 5000, Geforce 9500 GT, same problem happens when trying to install Centos 5.
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Oct 19, 2010
Can't set screen resolution 1024x768 permanently. There is no tools like sax2 which is in openSUSE 11.2. I am to set screen resolution to 1024x768 every time after loggin in.
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Dec 28, 2010
how do i make the screen zoom out abit as when i open some programs or some windows pop up they are bigger than my screen and i cant read them all or click on the buttons at the bottom, ive tried resizing the boxes but they usually only expand and i can never get them to shrink,all ive come across is things about zooming in and out but thats not really what i need,im running ubuntu 10.10 and im on a netbook.
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May 11, 2011
I originally installed Maverick on my Macbook 5.1 using rEFIt to dual boot. For some reason, after installing Compiz my screen brightness functionality stopped working. It was permanently 100%. I thought that upgrading to Natty might work, but no luck. So far I've tried changing the brightness manually in terminal and in power-management, editing the grub file and also reinstalling compiz, all to no avail. Trying to alter brightness using the fn keys displays the brightness panel in the top right, and it decreases in value as it should, but the screen stays bright. The brightness settings work fine when I boot to Mac.
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Jul 21, 2010
I upgraded my opensuse from 11.2 to 11.3, but after it, I have several problem with it.
Firstly: My graphic card is intel hd4500 and motherboard chip's is intel G41. After upgrading, I understood suse 11.3 didn't have sax2. at a result. I have problem with graphic card driver and consequently can't change screen resolution, therefore after each restart, my resolution automatically fix to 1600x1200 but I would like to set it in 1280x1024? What can I do to change it permanently?
Secondly: I installed vmware workstation 6.5 and after it, I see a message that say vmware need to Kernel Header 2.6.34-12- desktop. I install kernel-syms, kernel-source, gcc and make but doesn't run yet. What happen for it?
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Feb 4, 2010
every now and then there appear ugly artefacts on my screen. Until yesterday it happened every five to ten minutes; now it happens every few seconds. It is no fun to work with such a system, it is extremely annoying... The artefacts remember me on the artefacts you had 20 years ago when you overwrote an analog VHS-cassette a hundred times, except that the screen looks perfect between the moments the ugly artefacts are present. My notebook is a cheap Acer Extensa 5230E, exact specifications is being made public by my vendor: [URL]
user@host:~$ uname -r
2.6.32-trunk-686
(the same problem with the old kernel 2.6.30)
Here is some /var/log/messages output that might be useful:
Feb 4 04:27:17 host_system kernel: [ 233.292624] tg3 0000:02:00.0: PME# enabled
Feb 4 04:27:17 host_system kernel: [ 233.292633] tg3 0000:02:00.0: wake-up capability enabled by ACPI
Feb 4 04:27:32 host_system kernel: [ 248.387813] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[code].....
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Apr 29, 2011
i just tried to install Ubuntu 11.04 (x86) on my Dell Inspiron 1520 Laptop (with a Nvidia 8600M GT graphics card) with Wubi. A normal installation try resulted in an unreadable screen after boot (see attachment). I then managed to get the installation going by modifiing the boot options like shown in this HowTo: [URL] After the installation Wubi automatically rebooted the system without any prompt, so that i couldn't install the proper Nvidia drivers (is there a way to prevent wubi from doing that?) like described in the HowTo. After the reboot the graphics were messed up again.
Boot parameters like "text" "single" or vga=xxx didn't work, adding nomodest and nouveau.modset again didn't help either (I think "text" acutally brings up the console, but i just see an unreadable "blacker" screen than normal). Is there an boot option for grub to disable all nvidia related drivers and the graphical login manager and just show a text based console? Or force the gfx driver to be the same as in the installation process (which was perfect...native resolution, no graphical errors until the reboot) (i tried xforcevesa without any luck; nosplash and removing quiet/splash does work - the bootup process is readable, but as soon as the login manager starts its messed up again)
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Aug 19, 2010
how to delete unreadable file? As you can see at attached picture, there is two unreadble files at root directory.
Code:
[code]....
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Jul 19, 2010
I have a Seagate 1TB external USB 2.0 hard disk which contains 740 GB of data. Everytime I connect, it shows the memory occupied and the remaining memory(190GB)..but when i try to access the folders inside they read empty... nothing is seen in the folders.. I am unable to read any data from it or write to it... Same is the case with Windows When I run self-test in Linux ubuntu I get
Reallocated sector count
threshold: 36
Normalized: 61
Worst: 61
value: 6488
Current pending sector count:
Normalized:1
threshold: 0
worst: 1
value:2036
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Apr 15, 2010
I want to share my /home/myname/Public/ directory with other users on my system. The problem I am having is that it seems impossible to do so. I can't use a hard link because it's a directory and I can't use a soft link because the target directory can't be found by anyone unable to read my home directory.
So far, the only solutions I can see are:
1) To move everything from my Public directory to one lower on the directory tree (something like /home/Public) and then symlink to that as /home/myname/Public and allow everyone else to do the same.
2) To use something like samba to share the folder, even if only locally.
is doable because /home and /home/myname are on the same volume but there are times on my system when that is not true (I have users with their home directories on thumbdrives and external HDDs for instance and keeping their public files on a separate volume really isn't an option).
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Jan 17, 2011
Kubuntu10.10After installing a 6000+ font collection from KDE-Look.org, my computer had assumed a new font, though I restarted and it is now fine, generally speaking. My Firefox still has this crazy font, and it is so weird that it is almost unreadable.
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Apr 1, 2011
Title says it all.The font is unreadably garbled and missing pieces of text.I will try to post a picture but I do not know if I can since I am posting from links2.
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Mar 12, 2010
After logging onto a linux machine via SSH, I would like to be able to retrieve the name of the computer from which the connection was made. Ideally I am looking for some command like hostname or uname but that would retrieve the name of the client instead of the host.
This information must be accessible somewhere, since when I log on I get a message that contains the clinent name from the last login:
Last login: Thu Mar 11 18:42:01 2010 from my.address.com
The reason for wanting to do this is to be able to take different action in my .login file depending on which computer I am currently connecting from.
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Aug 5, 2010
I need to know which files were added/modified/moved/deleted after compiling and installing an application from source code, ie. the command-line, Linux equivalent to the venerale InCtrl5.
Is there a utility that does this, or a set of commands that I could run and would show me the changes?
The following is sort of OK, although it includes the lines where changes occured
(eg. "@@ -2,6 +2,7 @@"), and "." and ".." that I don't need: Code: # ls -aR /tmp > b4.txt
# touch /tmp/test.txt
# ls -aR /tmp > after.txt
# diff -u b4.txt after.txt
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Aug 5, 2010
I need to know which files were added/modified/moved/deleted after compiling and installing an application from source code, ie. the command-line, Linux equivalent to the venerale InCtrl5.Is there a utility that does this, or a set of commands that I could run and would show me the changes?
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Apr 8, 2010
I'm setting up (have set up) Ubuntu after installing W7, everything working great - then realized that I have made the W7 partition too small. Nothing new installed yet, is it possible now to resize/enlarge that partition, without re-installing?
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May 23, 2010
Recent example: mountlo (using UML):
vi@vi-notebook:~/b$ mountlo -m 16 -d /dev/uba1 /home/vi/mnt/usb -t vfat -o iocharset=utf8,allow_other&
[1] 32561
vi@vi-notebook:~/b$ Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...OK
Checking advanced syscall emulation patch for ptrace...OK
Checking PROT_EXEC mmap in /tmp...OK
[Code]...
Also happens with Gimp (when it does run it's plug-ins). Parts of Gimp started by `gimp q.jpg&' freeze and cannot continue unless "killall -CONT" or made foreground. Is it a bug? How to reliably start things in a background?
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Feb 23, 2010
I made a disk image of a vfat fat16 using:
Code:
dd if=/dev/sda of=image_drive.img
I would like to mount it to /mnt/vfat using mount and loop. Is it possible to be mounted?
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Feb 8, 2010
I have an HP laptop with both Ubuntu 8.04 and Windows Vista installed on it.
The other day I noticed I was running out of space in the main linux partition (the / partition, not the /home partition), so I decided to move some space from the Windows partition and move it to the linux one. I used a GParted Live CD to do that.
My partitions are ordered as follows:
Windows Vista partition (NTFS)
Main linux partition / (ext3)
Linux home partition /hom (ext3)
HP RECOVERY (NTFS - I don't know what it is, it just comes with HP laptops that have Vista on them)
So I shrank partition 1, and then "moved" partition 2 to enlarge it (GParted said everything was alright).
After doing that, I went to my linux and everything seemed to be fine, I'm also quite sure I had access to my Windows partition as always. But today I tried to start my Windows and it just got stuck on the "loading" stage (that screen that says "Microsoft Corporation" and has a green loading bar). So I shut the computer down manually (by holding the power button for a few seconds). After doing that a couple of time, I went to my linux, which worked just fine, but I was not able to go to the Windows partition. You can see how GParted looks now for my computer:[url]
As you can see, the first partition (/dev/sda1), which is supposed to be the Windows partition, is not mounted and the system doesn't seem to be able to read it properly. Here is my attempt to mount it manually:
Code:
Mount is denied because NTFS is marked to be in use. Choose one action:
Choice 1: If you have Windows then disconnect the external devices by clicking on the 'Safely Remove Hardware' icon in the Windows taskbar then shutdown Windows cleanly.
Choice 2: If you don't have Windows then you can use the 'force' option for your own responsibility. For example type on the command line: mount -t ntfs-3g /dev/sda1 /windows/ -o force
Or add the option to the relevant row in the /etc/fstab file: /dev/sda1 /windows/ ntfs-3g force 0 0
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Feb 26, 2010
this is my structure:
[root@ iso]# fdisk -l
Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
[Code]....
And I want to restore some files from /dev/VolGroup00/LogVol00.
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Jan 9, 2011
want to made 2 users in samba by which windows machine we access share, say user1 has read,execute permission, user2 has read write delete update full permission. we have done user1 configuration as premia user. we need your guideline for user2
we change the smb.conf file
# less /etc/samba/smb.conf
[global]
[code]...
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