I am trying to install F12 on a Dell Latitude E5400 laptop. It got through the whole install process, but when it rebooted i just get a screen that says
"unable to handle kernel null pointer dereference"
and it just hangs there.
since upgrading to Fedora 11 I keep getting this error:
Code:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000041
IP: [<ffffffffa01fab94>] sync_request+0x1/0x8de [raid456]
PGD 49435067 PUD 494f6067 PMD 0
Oops: 0002 [#1] SMP
last sysfs file: /sys/devices/virtual/block/md0/md/sync_speed
CPU 0
Modules linked in: ip6table_filter ip6_tables ip6t_REJECT nf_conntrack_ipv6
[Code]...
all of the following are made through live usb creator. when i tried with F11 i686 live kde, I got the following error: Bug: unable to handle kernel when i tried with F11 x86_64 live kde then at the time of installation my screen got blurred.
View 4 Replies View RelatedDoes anyone have any idea what this is? I'm running F14 kernel 11-83, everything else is rock solid but I get this crash randomly, sometimes it runs for days no problem other times it crashes within a few hours.Someone recommended I run memtest86, I did for 24 hours and it showed no problems.
View 6 Replies View Related[Note: I'm typing this entire thing out. It probably isn't 100% verbatim. And I am using an older version of the kernel because 2.6.30.9.96 was not behaving either.]
Code:
BUG: unable to handle kernel paging request at efd86f5c
*pde = 00000000
[code]....
I have a server running Red Hat Enterprise Linux ES (2.6.9.55.ELsmp). When it starts up I get the following error: Uncompressing Linux... Ok, booting the kernel. Red Hat nash version 4.2.1.10 starting WARNING: can't access (null) exec of init ((null)) failed!!!: 14 unmount /initrd/dev failed: 2 Kernel panic - not syncing: Attempted to kill init!
After that I got no response from the OS. I have the installation CD, so I tried to start the rescue mode, while going through the steps I received an error stating that mounting to /mnt/sysimage failed and that if I want to I can access a shell. I really don't know what to do from here
#!/bin/bash
sed -n 8p file.txt
returns the 8th line to the StdOut.
If I assign the value to the variable line = $(sed -n 8p file.txt)
and now print it out with echo
echo $line
the line would be printed.
But what if the file has only 4 lines. What value would be assigned to the variable line?
I want to know that because I want to only print it if the value is "something", that is not null.
In Java for example I would do it like this...
String line = "";
line = reader.readLine(); // or anything else..
if(line!=null){
System.out.println(line);
}
How would I check if the value is not "null"(I don't know if bash knows null)
I refrained from posting this in the Kernel Vulns thread earlier, due to its zero-day status. But now that the issue has been Slashdotted, there's no use in keeping us from publicly discussing this vulnerability. The link to the article (from which I quote below) is here. Brad Spengler's original announcement on the Dailydave mailing list is here.Quote:A researcher has published exploit code for a new vulnerability he discovered in the Linux kernel. The vulnerability is an especially interesting one in that the researcher who discovered it, Brad Spengler, has demonstrated that he can use the weakness to defeat many of the add-on security protections offered by SELinux and AppArmor.
View 9 Replies View RelatedI am trying to install CentOS 5.3 on a computer where I successfully installed Windows XP.
Booting from the DVD I got the following error:
[<c0458f3c>] serial8250_init+0x6d/0xe4
[<c041abd4>] init+0x25/0x69
[<c041f46b>] ret_from_fork+0x1eb/0x73c
[<c04597eb>] init+0x181/0x19b
[Code]....
I've been trying to install Opensuse 11.3 from the Kde live cd, but the installation hangs when I'm almost done. Right at the beginning the installation is interrupted right with text that among other things says:
Bug: unable to handle kernel paging request at ffffc90010b8000. After a while though, the installation picks up and continues by itself. I'm then able to complete the necessary steps and I reboot the system so that it can complete the installation.
After reboot there is a new text message that says that the bios does not support EEC memory or something to that effect and then continues with the installation. When it has completed 82% of the autoconfiguration the installation just stops and stays that way.
I've had no problem installing previous releases, from 10.2 up to 11.2, on the same machine.
I've checked md5 sum and also checked the media before proceeding with the installation.
Upon reboot after the first installation step, I also tried the failsafe mode but got the same result.
Here's the text from the serial console before I rebooted:
BUG: unable to handle kernel paging request at ffff8140320234b8
IP: [<ffffffff802b0a13>] dentry_iput+0x26/0x9d
PGD 8063 PUD 0
[code]....
My root server is using CentOS release 5.2 (Final), kernel 2.6.26.5-rootserver-20080917a, SMP, 64-bit This Oops happened yesterday and before that it happened on March 14th of this year, and before that on January 31st of this year, so a repeating pattern. On the January 31st Oops, I just rebooted. On the March 14th Oops, I reformatted the two swap partitions as follows: mkswap -c /dev/sda2; mkswap -c /dev/sdb2 On this last Oops, I turned off the swap for 24-hours, then decided to turn it on again after doing the above mkswap again. During the previous uptime, I had dumpcap packet capture running, but this last reboot, I'm not going to run it.
I use a pretty fresh installed RHEL 5.4, which should be very similar to Fedora. After the basic installation I installed xen and xen-kernel via yum with no errors. I can select the xen-kernel at boot time. But after booting the normal kernel shows up.
[root@noname boot]# uname -r
2.6.18-164.11.1.el5
My /boot/grub/menu.lst looks like:
default=1
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
[code]....
I can't see anything wrong and I did not change/try anything.
A FC10 server hung and had to be power-cycled. I suspect it hung because of an nfs mount timeout.
Now it does not boot. The error is libc.so.6 not found. Kernel panic. Attempting to kill init.
Booting under rescue:
ls: cannot access libc-2.8.so: Stale NFS file handle
Is there a way to reboot to a clean state? There must be some NFS cache file.
I also tried to cp rescueCD:/lib64/libc-2.8.so to the old lib64 dir, but get the same "Stale NFS file handle" message.
I'm wondering if there is any application being able to handle compressed SWF files. If I try it with mencoder (mplayer), it tells me:[swf @ 0x91a0a30]Compressed SWF format not supported No way in Fedora Core 11?
View 3 Replies View RelatedI am trying to install Fedora12 on a usb hard-drive, the first problem I encountered was that the hard-drive would not boot stating "kernel panic: unable to create root device", this is just using the standard fedora 12 install and mostly clicking next (although I add my vista to the grub and tell grub to install to /dev/sdc which is the location of my usb hdd).
I have also tried livecdtousb (wont boot in stick and wont recognize removable hd as removable)
I have tried setting up disc encryption and installing with no LVM.
The drive has this same problem with ubuntu 9.10 however ubuntu 8.10 installs perfectly and I am guessing earlier versions of fedora will too. The problem is that I would like the kernel features of Fedora 12 (mainly modesetting) without this issue.
I have played about with grub and quite like disabling LVM and using the uuid of the drive to select the root partition, my boot partition has 500mb, I have a 2gb swap space 50gb ext4 root partition & 27gb fat32 partition code...
I pre-upgraded a working F14 system which was reading MPEG4 xvid (xvidcore rpm). Since the upgrade gstreamer refuses to handle that stream: ** Message: don't know how to handle video/x-xvid.It seems the codec is not registered with gstreamer.
View 1 Replies View RelatedI am running FC13 on a fairly old PC (PIII 500MHz, 384MB RAM, 10GB SCSI disk). It works fine using kernel 2.6.33.5-112.fc13.i686.PAE. After a series of recent updates the system now also has a new kernel 2.6.34.7-56.fc13.i686.PAE.
/boot/conf/grub.conf contains:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
code....
When I try and boot to the newer kernel I get an error like:
Kernel panic - not syncing VFS Unable to mount root fs on unknown block(0,0)
I read on the forum about a similar problem where the fix was to insert the line
initrd /initramfs-2.6.34.7-56.fc13.i686.PAE.img
but this file doesn't exist and so the boot then hangs with no messages, so I took this line out again. Here is contents of /boot:
$ ls -l
total 21148
-rw-r--r--. 1 root root 111391 May 27 04:06 config-2.6.33.5-112.fc13.i686.PAE
-rw-r--r--. 1 root root 112291 Sep 15 04:32 config-2.6.34.7-56.fc13.i686.PAE
drwxr-xr-x. 3 root root 1024 Jan 23 2010 efi
code....
As you may deduce from the above I haven't used the system much so the auto-update hasn't run for several months.
Any help on running / installing the newer kernel appreciated. Note that I am trying to install a wireless LAN card and am following instructions here: url
I got as far as
cd /lib/modules/`uname -r`
ls -l
which gave:
[root@localhost 2.6.33.5-112.fc13.i686.PAE]# ls -l
total 3300
lrwxrwxrwx. 1 root root 51 Jun 3 00:52 build -> ../../../usr/src/kernels/2.6.33.5-112.fc13.i686.PAE
drwxr-xr-x. 2 root root 4096 May 27 04:08 extra
drwxr-xr-x. 11 root root 4096 Jun 3 00:52 kernel
code.....
so I have the src files for the newer kernel not the one I am running. I thought it best to stop and think (and ask for help!) rather than break a working machine (but with no wireless LAN!)
I just booted up my old notebook with Fedora 13 + lxde live CD. However, at the desktop screen, the mouse pointer disappeared. How can I get it back?
My notebook info: Fujitsu S6220.
I installed FC10 but can not see mouse pointer (it was so also during the installation process). Mouse is working, Crtl shows pointer's position, moving over sensitive areas activates them but no pointer can be seen. The Mouser Property Tool doesn't show the part for selecting pointer themes (as given in Help). FC9 on the same computer worked ok, FC10 on other computers work ok, too.
View 8 Replies View RelatedI have installed Fedora 10. During installation itselt the mouse pointer is invisible. After installation, I rebooted system. Still it remains invisible. I am new user of Fedora. My mother board is Mercury PVM7 and P IV processor 3.06 GHz
View 4 Replies View RelatedI have a Compaq Presario 8000 with an Nvidia Geforce FX 5950 Ultra on which a year ago I upgraded from Fedora 6 to Fedora 9, and this broke the Nvidia driver, since Fedora 9 was shipped with an X server incompatible with Nvidia. I went back to the 2d driver to get X working, and it sat that way for the past year. But recently I wanted to do some 3D work and decided to install Fedora 12, which hopefully has an X server that works with Nvidia.
I decided to do a cold install, re-partitioning my 80G hard drive at the same time. I backed up my data, ran the install CDs with no errors, and booted the system, with an immediate kernel panic: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Doing a Google search, I found over 8,000 hits for that message combined with the keyword Fedora. Several of the hits were on Bugzilla: [URL] I then booted the install disk, chose rescue mode and did - chroot /mnt/sysimage
[Code]....
Can I dereference a wildcard in a command?For example if I want to create a file with the md5 hashes of compressed versions of files in a directory...gzip -rc ./source/* | md5sum -b - >> hash.txtThis above command gives me a file with one hash for the filename *I would like to get a file with the hashes and filenames for every file gzip compresses.
View 1 Replies View RelatedI need to understand southbridge related code in linux source code.
For that I have downloaded Linux source code version:2.6.28 .
I have seen the code but didn't find code specific to southbridge handling.
Is Linux source code contains southbridge specific code?If so where can I find the code?
I am using Ubuntu 9.10 for about three months now (I am a total greenhorn) . A few hours ago, I decided to add the KDE 4.4 desktop environment. I followed the procedure on this link. It was all in GUI, no terminal commands required. [URL]
Installed KDE and everything is fine except two problems.
1. The KDE mouse pointer has become default in GNOME and I just can't change it. Tried everything, changing theme, customising theme and even downloaded the "mouse pointer" app from Software Centre. Nothing works.
2. I am not able to upgrade anything using Kpackagekit. It keeps telling me I don't have authorisation, without asking for my password.
For the past several days the Package Updater has popped up wanting me to install an update to iceweasel. Each time I try to do the iceweasel-31.8.0esr-1-deb8u1 (64-bit) I get the following error message:
E: Internal Error, ordering was unable to handle the media swap
Is there something I need to do?
Fresh install of 32-bit 11.3 on my father's computer.He needs me to enlarge the mouse pointer and/or make it a different color. I changed it in the settings/themes thing like you are supposed to, but it appears to only take effect in Mozilla.needs the larger mouse pointer for the entire system. Evolution appears to completely ignore the mouse theme settings.
View 1 Replies View RelatedI have installed the fedora 14, but there is no kernel source tree.I read the doc "building a custom kernel".But I don't want to rebuild a new kernel.I just want to install the source tree of current kernel.Could someone tell me the way?
View 6 Replies View RelatedI have been googling trying to fix this ... basicly I have a (int **) variable, and when I try to pass a (int) value to a specific position, I have seg.fault.Resuming what I have is:
int ** p;
p[0][0] = 1; //segmentation fault
I wrote a simple code using Open Inventor(OpenGL) classes to print a Sphere in a .png file.I tested it on Windows and it worked well.But when I run it on Fedora 10, I got the following error with no output .png file:
Coin error in glxglue_init(): Couldn't open NULL display. Coin warning in SoOffscreenRenderer::renderFromBase(): Could not set up an offscreen OpenGL context.
Segmentation fault
i have newly installed ubuntu 9.1 but it is not able to play any movies also don't show mouse pointer, i have installed all players and neccesory files for multimedia. when i play the file media player opens and starts playing but i am able to see only a screen full of colored pixels my system: AMD Athlon , Asus Mother board dual core 3600+,VIA Technologies, Inc. K8M890CE I/O APIC Interrupt Controller [1106:5336], resolution 1280 X 1024, lg 17" LCD
View 7 Replies View Related