I have an issue that is fixed by changing the lpfc driver to run using MSI interrupts. This is done by adding "options lpfc lpfc_use_msi=2" /etc/modprobe.conf.local file.
Is there a way to make this change using kernel boot parameters?
I'm running Testing and need to pass some parameters to my bttv tv tunner card, for this reason I created the following file /etc/modprobe.d/kozumi.conf with this content:
alias char-major-81 videodev
alias char-major-81-0 bttv
options pll=1 radio=1 bttv_verbose=1 card=151 tuner=38 gbuffers=4
The problem is that for some reason this options aren't properly set after booting the computer, I've tried different combinations for line 1 and 2 without success.
I'm used to rmmod the bttv driver and modprobe manually with those settings but I'd like to automate the process.
I have a backup schedule running a full backup everyday. I'm using webmin to manage these backup now. The problem is when the dump command sends a prompt asking if we want to rewrite the tape, Webmin does not display this prompt and we end up having to terminate the backup -> erase the tape(which takes a long time) and then run the backup again.I was wondering if there is a technique that could be used to pass "Yes" as a parameter to the dump command, much like in windows? or if there is a more efficient way of getting this done.
View 2 Replies View RelatedThe problem I'm facing is that I can't use my headphone. Sound works, but not the headphone. See my ealier thread. It was suggested to edit the module options, but I don't quite know which buttons to push.
View 6 Replies View RelatedHow can I pass by reference, a parameter, without assigning a new object? In my first example, var = "changed" creates a new local object. In the second, mylist.append will affect the reference target. How to i achieve the same effect with example 1?
Code:
#!/bin/python
var = "unchanged"
def print_string( var ):
[Code].....
im doing a school assignement and i cant find any info about this anywhere. How do i make sure that a module is loaded into the kernel upon boot?
View 2 Replies View RelatedI am using FC9, I want to write a module that will always show current time after booting.But for that I need not only to load module using insmod/modprobe, but also to compile that module during boot time.How can I perform this 2 steps correctly.
View 11 Replies View Relatedi m using following kernal.
Code:
# uname -r
2.6.18-128.2.1.4.9.el5xen
According to security manual i need to incorporate following changes into kernal parameter but i m not sure when and how these changes will be implemented.
Code:
net.ipv4.conf.all.accept_source_route must be set to "0"
net.ipv4.ip_forward must be set to "0" (zero)
icmp_echo_ignore_broadcasts must be set to "1"
net.ipv4.tcp_syncookies must be set to "1"
[code].....
I want to add some code in existing linux2.6.33.2 to enhance kernelI want to know how to start and where to add code.
View 2 Replies View RelatedI recently enabled noapic on my laptop because it was experiencing strange input freezes on several distros that I tried.Ok, so it does not use the ioapics. My question is, what does this mean for the system? If it used apics before, what happens now? I am a freshly graduated computer science major, and I have worked with basics pics on projects before, but I am curious how this effects the running system.
View 2 Replies View RelatedWhat is the default kernel paramtre valus for linux RHEL Machine?
View 5 Replies View RelatedI need to install module u32 into the netfilter module for kernel 2.6.27.
I did not see the source code in the kernel version I have. where can I find the code for U32 module.
I have checked "netfilter.org" and looks like POM is discontinued. Is the u32 module committed to kernel version 2.6.27 or need to patch it. If yes, where can I find the patch?
I building the kernel for a MIPS processor.
I've done the usual edit of /etc/sysctl.conf to include the parameter, but it just tosses errors. I haven't had to tune a kernel in a very long time, what's different about it nowadays (or have I simply forgotten how)?
edit: Added "kernel.semmni = 2048" to the tail of /etc/sysctl.conf and then ran "sysctl -p". End result is an unknown key error (apparently kernel.semmni isn't the valid name anymore?).
I am trying to do a fsck on my ext3 partition, but so far failed to let the system come up in single user mode and having the partition mounted read only. It says in the kernel parameter that it is read only (RO) but still mounts it RW. A remount with mount -o remount,ro does not work, since / is always busy. what to do to get a fsck done? I don't want to boot into a rescue system, this should be possible on a running system (like Windows does it, when rebooting)
View 1 Replies View RelatedI got the following modprobe scripts modprobe -k -q streams what does the -k parameter mean?. is it exist in older modprobe? I don't see -k parameter in recent modprobe.
View 1 Replies View RelatedI'm trying to install a newer version of libevent than is on my machine, so I can install memcached. However, the install for memcached complains that the libevent library isn't in /usr/lib64 and that it isn't 64bit.What options do I need to pass to ./configure to get it to compile as 64bit and/or into the /usr/lib64 directory? This is what I have at the moment:
CHOST="x86_64-pc-linux-gnu" CFLAGS="-O2" CXX=gcc CXXFLAGS="-O2" CC=gcc CXX=gcc ./configure --prefix=/usr
The ide has xp and I installed debian on the sata, the duel boot worked fine and still does. I then installed unbuntu on the sata along with debian but can't access unbuntu. when I tryed to install grub it error'd out so I bypassed that and finished the install. It told me I would need to pass a kernel argument to load ubuntu but I'm clueless about what that means.
[code]...
I am following an instruction on the Internet to set up a timer=1. "You can force use of the timer interrupt by using the timer=1 module arameter (or oprofile.timer=1 on the boot command line" When I type "modprobe oprofile timer=1" at the command line, I got a warning message saying that "Deprecated config file /etc/modprobe.conf" So i want to try other way by setting it at the boot command line.
View 2 Replies View RelatedFirst off all, I'm booting from a large MEMDISK using PXE (900MB) . Due to our environment, I cannot decrease the size, nor move files to a nfs/iSCSI/... environment. Everything needs to be in that MEMDISK.
Now, when I try to run the OS, I get out of vmalloc space. How do I increase it to a number which allows such a large image to be mapped? I tried the parameter "vmalloc=1280M", but with that parameter, I don't get past the Booting the kernel screen.
Memory should not be an issue, since the machine(s) have at least 2GB RAM. (900MB MEMDISK + 256MB for other kernel stuff + 768MB for user stuff). The machine(s) have a Pentium 4 Extreme Edition processor, with hyperthreading and SSE2, but no EM64T.
How can I boot the system, and get past that message? Decreasing the MEMDISK size is not possible too. It is at the smallest we can get with our userland + kernel + modules.
I have ~20 log entries/second in syslog
Code:
nm-pptp-service-1078 log[decaps_gre:pptp_gre.c:414]: buffering packet 57467 (expecting 57429, lost or reordered)
[code]....
For a diskfull node (the OS installed in a disk), I can use the 'insmod' command to insert a kernel module into the kernel. And after the reboot, the module is still in the kernel. I have a question here: how, when and which kernel module will be loaded in the boot up process for a diskfull node?And for the diskless node, can I use the chroot or some other ways to install the kernel modules into ramdisk, so that kernel module can work when the diskless node boot up? I think it needs certain mechanism to load the kernel like the boot up of diskfull node.
View 8 Replies View RelatedI've built my own kernel and now boot.preload complains about the missing preloadtrace.ko kernel module.
Where can one find the source for this module?
Code:
How do I know what option means what to compile my own kernel? How to find support for different hardware in this mess (and exclude it)?
What is the error "invalid module format" and the message "insert kernel module" mean? And whats the reason for the same?
View 8 Replies View RelatedI'm building the 2.6.34 kernel and I notice some interesting options, which you may want to consider including in the build, if you are building it:
Code:
Code:
I have not dug into Ubuntu for almost a year now (Since Jaunty, really). I am trying to come to grips with Grub2, but have just now encountered it in Lucid. I am having a terrible time with the graphics chipset, and it may well be that Ubuntu cannot be used on this computer (an older laptop with the dreaded Intel 82845G graphics chip). There are a number of older bug reports that it is unsupported, but some success in more recent versions.
Anyway, one suggestion has been to add i915.nomodset=1 to the kernel boot line. Now, this was a cinch in Legacy Grub, but I have been reading Grub2 wikis and tutorials for two days now, and I know about the config files, but I cannot find anything which tells me specifically how to add a parameter to the kernel boot line.
I have a "Chicony 1.3M UVC Webcam (Asus G1S notebooks)" webcam, which is supported by Linux UVC [1]. However I'm unable to find the kernel parameter that I should select to compile my kernel to support this device.
View 1 Replies View RelatedIs there any Kernel parameter available for interrupts handling, In the case of busy server how we can tune the kernel to handle interrupts effectively.
View 4 Replies View RelatedIt's documented in the howto's that you need to have the nomodeset kernel parameter specified if you want to run the proprietary Nvidia driver. But I read in certain posts that this is only required for "older" graphics cards.Can someone shed some light on this? Is the parameter ALWAYS required when running the nvidia driver, or only for certain graphic cards?
View 9 Replies View RelatedHey,everyone! I've got Ubuntu 10.10 , when loading I see the following message:
"atk: Resources not safely usable due to acpi_enforce_resources kernel parameter"
What does it mean and do I need to fix it?