for questions concerning Ubuntu's kernel, including compiling and questions relating to modules

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Ubuntu 12.04, loading i801 I2C driver

I have a device connected to the following bus (I will discuss it once I explain what I'm trying to achieve), and I'm trying to debug the driver itself (generally it was working for earlier ...
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0answers
8 views

Ubuntu server 12.04 made into squashfs (toram) and frequent start-up kernel panics

I've got a Ubuntu server 12.04 64-bit packed into squashfs and booting into RAM using toram option. When I reboot the machine I get a kernel panic 3 out of 5 times, sometimes multiple times in row, ...
3
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1answer
22 views

Kernel security settings

What is the right security setting for the net.ipv4.conf.all.secure_redirects option in sysctl.conf? Here it sets to 1 and Here sets to 0. Is net.ipv4.conf.default.secure_redirects related to ...
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0answers
14 views

do-release-upgrade: Failed to configure linux-image-generic (previous on backports kernel)

Because of hardware issues I was on backports-3.11-rc3-1 with Ubuntu 13.4 64bit. Now, after a while I initialized do-release-upgrade. The process stopped with the message that the configuration of ...
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1answer
53 views
+50

Why does my computer (almost) randomly power off? (GPU Kernel Panics?)

I've always had a problem running any sort of Linux distro on my machine. I'm a gamer and tend to spend most of my time in Windows and I have never had any issues when it comes to stability of my PC, ...
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0answers
7 views

Recompiling the kernel after modifying the “irq.c” Module

I modified the irq.c file in the kernel by including several printk() statements to trace some values that I wanted to recovered. Logically, after modifying the irq.c file I attempted to recompile the ...
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1answer
14 views

Finding the path of Kernel source code

I have the following situation. Let's say, I have 3 kernel images installed in my system. But currently, image 3.0.0-generic is running. And the source code for all three kernels are located at ...
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0answers
25 views

Problem installing Lubuntu 13.10 [Kernel Panic]

Hello ~ I've had trouble installing Lubuntu 13.10 [64bit] from a usb drive. [I used Universal USB installer] I boot from a usb drive, menu loads up and I can pick with arrow keys - but then as soon ...
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1answer
561 views

Blacklist.conf “Ignoring Bad Line Boot Prompt”

Alright Ubuntu wizards, I jacked up my system a bit unnecessarily, which is now giving me the chance to learn more about how to fix it...a vicious cycle. Anyway, I have it mostly up and running ...
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0answers
54 views

Cant boot from kernel 3.13.0.24 [on hold]

Hi yesterday while updating 14.04 using the update manager I saw Kernel 3.13.0.24 getting downloaded so after the update process completed I rebooted but found that the kernel is stuck at version ...
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0answers
19 views

special parameter xforcevesa to the kernel

is possible to know how works the special parameter "xforcevesa" when is added to kernel? how init-scripts can use vesa driver when X start ? this is for educational purposes
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8 views

Dell XPS 13 kernel issue

I've bought Dell XPS 13 9333 and I've upgrade to latest ubuntu 13.10. Then I've realize on book my machine can't never end it's task. It's just freeze after some time on booking screen (Ubuntu image ...
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1answer
38 views

Command to find how much data was transferred from USB

How can I create a cron job that runs every minute and logs how much data was transferred by USB? Ideally I want log of amount the data in bytes transfers done. For example if i tranferred 4mb file ...
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0answers
28 views

LinuxTV PCTV DVB-S2 461e not recognised

I have a problem with PCTV DVB-S2 Stick (461e). I am running Ubuntu 12.04 and have installed linuxtv using: git clone git://linuxtv.org/media_build.git cd media_build ./build ...
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0answers
11 views

cannot Install VMware 4.0.6

I'm using the Ubuntu 3.11.0-19-generic kernel . I'm trying to install vmware player 4.0.6 while installing i'm getting this error message "Unable to start services. See log file ...
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0answers
62 views

The path “” is not a valid path to the 3.11.0-19-generic kernel headers

I'm installing vmware tools and am getting this message. I tried "sudo apt-get install linux-headers-generic" which was suggested in another post but it did not help. What needs to be done so that the ...
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1answer
16 views

Can i recompile kernel in dualboot environment?

I need to fix a value hid-ids.h and compile kernel so that my device will work. But i'm on dualboot with windows 8. If this goes wrong can it damage grub or will this just affect my ubuntu ...
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1answer
18 views

Installing non-pae ubuntu from USB-stick without network

there! I have to install ubuntu on my old laptop(IBM thinkpad T42). When I was trying to install normal desktop version, it said that you must have non-pae kernel version. After that I downloaded ...
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0answers
93 views

Disable/Remove initrd image during booting

I am trying to boot Linux (Ubuntu 12.10) without an initrd image. There are various sources online, but I'm not able to find anything that is detailed. There are many pointers as to how to achieve ...
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0answers
13 views

How to fully encryped ubuntu on the Beaglebone Black

... or at least access LUKS partitions from a unencrypted system. In the past my BBB crashed during file copying on encryted SDHC that actually did mount. In the later versions from ...
11
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3answers
1k views

Is my kernel safe to use?

I am running Ubuntu server 12.04 and my fresh installation is using the 3.2.0-60-generic kernel, however when I go to https://www.kernel.org/ it says the latest stable kernel is only 3.14 I don't ...
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0answers
17 views

modprobe foo_driver not found

i need to change my usb device product ID to make it work properly without recompiling kernel.. Using 13.10. But the command 'modprobe foo_driver' gives me 'FATAL: Module foo_driver not found.' What's ...
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1answer
39 views

Installing TP-Link TL-WDN4800 Adapter with Ath9k

I just bought a wireless adapter and am still trying to install its drivers onto Ubuntu. I have looked up ath9k and seen that it is compatible with kernal module ath9k. I'm new to ubuntu and most of ...
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0answers
50 views

error installing linux-image-3.11.0-19-generic: “kernel does not support non-PAE CPU” although CPU has PAE

I am running Ubuntu 12.04 Kernel 3.11.0-15-generic on my IBM T42 which has a Pentium M 1,7GHz Processor which has 32bit physical adress extension (PAE). Now I cannot install latest security updates ...
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0answers
20 views

Modifying CPU Scheduling algo in ubuntu kernel [on hold]

I know how CPU Schedulers work on ubuntu. I want to see the code for this and modify the CPU Scheduling to optimize it for background processes. But I never worked on kernel code and I don't have ...
0
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1answer
222 views

Latest Ubuntu 12.04 kernel 3.2.0-51 does not boot graphical

I can run it in safe mode and get the root prompt, but if I let it boot normally I just get a black screen. A similar question was asked here: PC does not restart after last kernel update but I ...
0
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1answer
44 views

How to install wifi drivers on Mac book air?

I have a new Mac book air that I (because of the tiny amount of storage on it) booted it from an HHD. It is the latest version of Ubuntu and it is working great on the laptop. The only problem is ...
0
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1answer
42 views

Where to get official ChromeOS 32-bit builds? [closed]

For some reason, Chrome OS Recovery Media Creator is pulling the latest 64 bit version of ChromeOS and not the latest 32 bit version fo ChromeOS like it used to. This is a problem because I install ...
4
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2answers
9k views

AMD Catalyst Driver installer failing at DKMS

I am following these instructions to install the fglrx drivers. When I am running sudo sh amd-driver-12-6-x86_64.run it tells me fglrx is already installed; even though I ran the commands to remove ...
2
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2answers
40 views

Does Ubuntu use segments or pages to allocate main memory? [on hold]

Segmentation or Paging scheme that ubuntu 12.04 use to allocate the main memory? Does it use both of it? How? If it doesn't use both scheme, so what the scheme that should be use? why?
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1answer
43 views

Can't install Ubuntu 13.10; freezing on configuring bcmwl-kernel-source

For three hours, I have been trying to install Ubuntu 13.10 on my Gateway MX6445 laptop, but every time, installation stops in the last step. Could anyone help me?
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2answers
2k views

Help finding/installing kernel headers-3.11.0-14-generic

I just switched to Ubuntu 13.10 and I'm trying to install VMplayer in order to run windows based applications. The installation went good but when I try to open VMplayer it displays an error saying ...
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3answers
3k views

Ubuntu 13.04 installation issues: unable to handle kernel paging request error

I wish I could say that I’ve done more for the Linux community as of recent but I am very VERY new to all of this and I feel very much in over my head. I figured I would install Ubuntu. on my computer ...
12
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7answers
23k views

What is a “Asking for cache data failed” warning?

I'm installing Ubuntu server 12.04 on Dell laptop and I frequently get an message as below: 3256.362200] sd 5:0:0:0: [sdb] Asking for cache data failed [3256.362200] sd 5:0:0:0: [sdb] Assuming drive ...
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0answers
28 views

ureadahead main process terminated with status 5

Having struggled for the last few days with a kernel panic, this is the new error I am getting on boot. A restart doesn't help. I have access to the server in rescue mode where I can mount the ...
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1answer
29 views

Booting Paravirtualized Kernel On Bare Hardware

I been reading dmesg and i found the line " Booting paravirtualized kernel on bare hardware " but I am not using Ubuntu in visualization I am using it on my laptop DELL N5110 the only OS I have on ...
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4answers
6k views

Error '' could not update ICEauthority file'' and '' problem in configuration server''

When I start my laptop and try to login, I'm facing these messages: Could not find ICEauthority and Problem with configuration server /use/lib/libgconf2-4/gconf-santy-check-2 exited with status ...
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0answers
62 views

Kernel Panic has ruined my entire server, can't identify the problem

As of today all my websites have been down and I cannot connect via SSH/FTP or ping the server. The only access I have is through rescue mode. Apparently the server cannot boot normally due to 'kernel ...
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2answers
511 views

How fix ATI fglrx driver after kernel upgrade

I upgraded to the 12.04.4 lts saucy stack from 12.04.3: sudo apt-get install --install-recommends linux-generic-lts-saucy xserver-xorg-lts-saucy libgl1-mesa-glx-lts-saucy That installed the 3.11 ...
1
vote
1answer
66 views

Header path during installation VMware [duplicate]

I have installed VMware on Ubuntu 13.10 but when i launch it then a message said that i have to specify the path for the linux-headers-3.11.0-19-generic. Now i'm not expert on linux, i give the ...
0
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1answer
23 views

Newly compiled kernel not booting up (vanilla kernel 3.12.14)

I downloaded, configured and installed kernel downloaded from kernel.org. While booting up this new kernel for the first time, this error screen shows which is pointing towards a missing or wrongly ...
2
votes
2answers
69 views

Are reboots required after updates?

I noticed from other posts that /var/run/reboot-required.pkgs tells what package is requiring a reboot, but this file does not exist anymore. I have been running Ubuntu 13.10 (and updated to beta ...
18
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4answers
3k views

What is the meaning of 'i686' in Ubuntu?

To check whether I am using 32bit or 64bit Ubuntu. I looked in How do I check if I have a 32-bit or a 64-bit OS? and found this answer uname -a. If it is shown as i386, it will be 32bit and amd64, it ...
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8answers
50k views

Unable to start VMWare Workstation after upgrade to 13.04

After upgrading to 13.04 I am unable to start VMWorkstation. I get the following message: Before you can run VMware, several modules must be compiled and loaded into the running kernel. ...
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0answers
9 views

How to set an image generated by update-initramfs to be loaded by default [duplicate]

In my adventures in trying to revert a kernel upgrade (it broke my wifi for some reason), I was able to generate a boot image for the previous kernel (#update-initramfs -c -k 3.11.0-17-generic) I ...
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0answers
38 views

Unable to build kernel module in VMware 7

Unable to build kernel module. See log file /tmp/vmware-root/setup-7178.log for details. Apr 05 11:36:38.648: app-3076208320| Log for VMware Workstation pid=5555 version=7.0.0 build=build-203739 ...
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0answers
15 views

Error when trying to remove g15daemon* [duplicate]

When I try to remove g15daemon I come up with this: Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be removed: ...
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1answer
19 views

File permissions and applications

How does ubuntu protect against executable files which become executable through another installed app changing the permissions? I mean it is possible to check applications do not change file ...
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0answers
6 views

Can I access the 4 addresses provided in the mac header of wirless 802.11?

I am writing a module that hooks a function on OUTPUT hook of the kernel netfilter. I want to access the complete information inside the mac header of the packet esp all the 4 addresses or in some ...
0
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1answer
83 views

Realtek RTL8188CUs

I am trying to use an airlink wifi dongle with RTL8188CUs chip. It has not been going very well. I found a link to a driver installer Download rtl8192cu-tjp-dkms_1.6_all.deb 1.0 MB When I run ...