Fedora :: New Kernel - New Audio - Disable Feature - Tweak The Parameters Like Crossover Frequency?
Sep 1, 2010
i have an hp pavilion dv7 and am using f13 64bit. my laptop has a built in woofer underneath that i have never been able to get to work. after the latest kernel update today my laptop now has woofer sound. there must be some new support for my laptops audio card. the problem is that it is a little overbearing. how can i a) disable this feature b) tweak the parameters like crossover frequency or gain? edit: i checked the changelog for 2.6.34 and couldn't find any info on any new audio support features.
So, the only way to have bass is to use PulseAudio and edit daemon.conf to enable-lfe-remixing? Well, damn, but alright. how do I fine-tune low frequency reproduction (since my satellites can't handle anything below 150Hz)?
I want to start to play with "homemade" kernels. (To get some experiences in this subject). I want to do this step-by-step. I have already read a lot about this. I have a Fedora 10 running. So I want to start with this. I have read that there is a "special" way to create a kernel for Fedora. [URL] OK. I understand this +/-. When you build a new kernel with an other version number, you have to rebuild all the modules with this new kernelversion, and you have to install these also.
But : I want to start with modify only some parameters in my kernel config. Do I need to rebuild and re-install the modules also? Will it not be enough to rebuild only the kernel? (vmlinuz) Where can I find some information about the options I can disable in my kernel to speedup my system? (boot process ed). I want to suppress the loading of unneeded modules. I want to understand the options in menuconfig (and there are a lot of options ! ! )
I'm not sure if this is a feature of Gnome, compviz, or some other part of Fedora, but whenever I place my mouse in the upper right corner of the desktop, all of my open windows zoom out to a Mac-like Expose feature which allows me to select which window I'd like to change focus to. Here is an example of what this looks like: [URL]
Does anyone know how to disable this feature? I actually find it highly annoying, as I tend to place the mouse in that region either on accident or unintentionally, especially when accessing my machine remotely via VNC. I've had a lot of trouble googling for combinations of "Gnome expose" and "Gnome desktop expose", I have a feeling I am calling this feature by the wrong name. how to do this myself - install the Compiz Configuration Settings Manager (the package name is "ccsm") and disable the "Scale" plugin.
Does anyone know what happened to the Multiseat feature that had been in the feature list at one point?To briefly summarise, a single machine with multiple graphics cards, sound cards, keyboards & mice provides multiple seats for users. Each user gets their own monitor, keyboard, mouse & perhaps audio. The rest of the machine resources are then shared.
The last I saw on the topic was this discussion, although I have a recollection that there was going to be support in a newer version of X.Org. I've googled around quite a bit, but can't seem to find anything.
Anybody know anything? It would be a great feature to have and it's frustrating to have had such an omission since F8 :-o
When I boot my machine (using a dual core 2ghz CPU) I always find myself out of "performance" mode (which I need), using only 1ghz per core.While this is easily fixable with "sudo cpufreq-set -g performance", I don't seem to be able to do it before having control of the machine. I would like to be able to boot with my CPU at full power.I would prefer to disable whatever is scaling down my CPUs to having to inject cpufreq-set to change governor. Anyone has any hint?I use default Ubuntu but I boot into a KDE4 desktop. But the same issue happens booting into the Gnome desktop.
I want to disable the XF86Search feature in my system. I will try anything.
One of my mouse buttons, when pressed, triggers this XF86Search no matter what I disable or change. (This feature opens up my browser and goes to a search page.) Strangely the mouse button is being interpreted as a key, not a mouse-button press. (This actually may be a bug in Ubuntu...)
How do I disable this feature?
I am running KDE 4.3.5 with Ubuntu 9.10 Karmic (Kubuntu). Though I use BTNX to configure my mouse buttons, this feature has absolutely nothing to do with that. I have tested by disabling BTNX completely and clicking this special button on my mouse still loads a search page.
For instance, the one thing I hated more than anything, was the touch-pad on here, and I mean whenever you touched it it counted as a mouse click. I always hated it and in Windows I found a way to disable it with disabling the entire mouse pad, how do I do the same in Ubuntu? In every other distribution I didn't have to worry about it, but I suppose that I'm using the proprietary drivers or something.
Anyway, TL;DR: How do I disable a touch pad feature
I want to turn off frequency scaling permanently and totally in the lowest-level way possible. Is there a kernel command line that can be used or is recompiling the kernel without the governor stuff the only way?
Solved. Just modprobe -r and blacklist the acpi_cpufreq kernel module.
A couple of weeks ago I installed Karmic. In previous options in Audio CD Extractor I modified a string in the "edit preferences" to set the variable bit rate for MP3 ripping. Specically the option "VBR=4" (Lame New Algorthym) However, I now notice that the "VBR=" option is no longer there!
I've searched around and read some indications that using a newer realease of Lame this is no longer necessary. But its a bit unclear to me. Do I need to insert VBR=4 or not? and if I do anyway will it affect anything?
I have noticed quite often that the tilde key only works when I press it twice. I've searched a while and found out that it can be used for accented characters like with the n (can't do that on Windows here anyway). I only know of the tilde-n from Spanish, I've never seen all of the other tilde-characters. And I do not need any of then ever. But I do need to type in my home directory (~) quite often and I want that to work the first time I press that key. Especially when it works through a PuTTY/SSH shell from Windows, but not directly in Gnome Terminal. The system preferences for the keyboard mapping don't help me out.
So how can I disable that double-press feature for the tilde key? It's allright for the accent keys, the � and ` accents alone are invalid characters and should never be used anyway (there's real quotation characters for that) (except for shell backtick expressions) and I don't need the ^ symbol (for coding only) often on Linux.Using Ubuntu 10.4 with German keyboard mapping (de), directly at the machine or via NX/VNC.
I installed macbuntu on my laptop. I love it except for one thing. Whenever you mouse over the left bottom corner the windows hide. How to disable that feature?
[URL]... Anyone got this going on slackware? I've a single cpu and twincore here and the videos of the original patch were impressive. I tried it and I don't have /sys/fs/cgroup anything. So I added the cgroup scheduler in 2.6.35, but no dice. Do I have to go to git or 2.6.37??
Is their any software in Linux which tells about audio sound quality (frequency,bits/s etc...? which is special designed for all Audio_quality-features. Moreover, I have tried Themonospot software but its only for Video formats. I want soft 4 audio formats only.
I am a Mac user who has been using Audio Hijack Pro for many years. I use it to record radio shows from the station I work at. One of the nice features is that it has a built in scheduler that I use to record shows at different times and dates.[URL]
I have a strange problem with RHEL4.7, with kernel 2.6.9-78.
I cannot set any kernel parameters by editing sysctl.conf file and run sysctl -p, everytime the old value appears, while it was possible before.
I tried to edit files under /proc by using vi when trying to save it gives me: E667: Fsync failed! While echo 1>/proc/sys/net/ipv4/ip_forward also cannot edit the file.
Also I mounted proc device on another mount point:
Bottom line first: Is there a GUI or otherwise friendly tool to modify the kernel parameters? One that will give help on a highlighted parameters?
Now as to my reason for this question:
In preparing for an Informix installation, I may need to change some kernel parameters. I could follow the advice of G�rard BIGOT from a couple of years ago at this URL. However, messing with the kernel this way, by directly editing /etc/sysctl.conf, is a bit scary. I have already backed up the current one and started editing according the Informix machine notes. However, I have commented out my new settings. [:Chicken]
The scariest aspect of this is that the notes recommend settings to kernel parameters that I do not find in /proc/sys/kernel. for example, it recommends setting SHMMIN to 1 but when I can /proc/sys.kernel/shmmin, there is no such file. (I did find shmmax.) Similarly for the very logical shmseg (max number of shared memory segments) - not found. I am afraid to add these into sysctl.conf if the equivalent pseudo-files don't exist.
Additional question: Where [on-line] do I find all kernel parameters documented? This is so that I am more certain of what I am doing instead of relying on my memory. For example, I don't recall the names of the parameters that control Kernel-Asynchronous I/O (KAIO) events.
Ubuntu 10.04 Gnome IBM Thinkpad 600e.I am trying to get sound going in my 600e which has the wrong chips in the sound card. I found some notes from 2008 that said in one of the steps to add the following to my kernel boot parameters: noapci nolapci notsc acpi=off pnpbios=off pci=noacpi
It said to hit the Esc key when I see the Grub Count on boot up to get into the kernel boot parameter's editor. However, I am not seeing any Grub Count and pressing the Esc key every second during boot up doesn't seem to get me there either. I have been searching for how to edit the boot parameters but no luck so far.
We're using 10.10-server. We are trying to make grub boot changes permanent. I've already looked at thread [URL]. We updated /etc/default/grub, and update-grub propagates those changes into /boot/grub/grub.cfg, but not into menu.lst. It appears to use menu.lst as the source at boot, so our change doesn't show up as a linux parm.
I have installed grub2 on a flash drive to boot some os's that I want to carry around. But in grub.cfg when i put this:
Code: menuentry "BackTrack Persistent" { set gfxpayload=1024x768 linux/backtrack/boot/vmlinuz BOOT=casper boot=casper persistent rw quiet initrd/backtrack/boot/initrd.gz } it does exactaly the same thing as this
[Code]....
I'm thinking of filing a bug report but I want to make sure i'm not doing something wrong first.
We just doubled the RAM on our RHEL 4 production servers...Oracle from 16gb to 32gb and Apache/JBoss from 8 to 32 gb. I am trying to figure out how to get the biggest bang from the increased RAM. Should kernel.shmmax be upped to be 50% of the 32gb....from its current 8gb? I need to create the largest possible SGA and was unable to do so, apparently because the kernel.shmmax value had gone unchanged.
And for the JBoss web servers, also RHEL 4, and particular kernel changes which can take advantage of the increased RAM and provide an immediate performance improvement?
Does anyone know of an alsa based software multi-band (10 or more) graphic audio frequency equalizer that works with Suse 11.x? To be clear, I don't mean an equalizer within an audio or video player. One that can be used with any sound application, that works between the output of the player and the output plugs on a motherboard or sound card.
My laptop is Dell Inspiron 1440 with Dell wireless. I use broadcom-wl on Fedora 13 and it works fine. Last week I updated Fedora including the kernel from 2.6.34.6-47 to 2.6.34.6-54, Fedora can not "see" wireless anymore (there is no item related wireless on the right-click menu of the Network Manager icon, of course I can not connect to Internet via wireless)
insmod: error inserting 'kernel.ko': -1 Invalid parametersI am getting this error when i am try to insert kernel.ko into kernelMy systemfedora 12 with gcc 4.4.2insmod kernel.koinsmod: error inserting 'kernel.ko': -1 Invalid parametersmy program
How do i find out the exact kernel parameters (from the grub config file) when the boot loader is corrupt. Seems like a catch 22 that I need the exact boot parameters when I cant get to a prompt to read the grub.conf file to being with.
how can i disable software update's notification about kernel. It keeps showing me alot of annoyn things about the new kernel update, but i don't want to install that i already compilied 2.6.36.1 .
I would like to allow the auto-log off feature either an extended inactivity time or to disable inactivity-logouts.
I use my PC strictly at home, and have no security issues. I've set my username to no-password so that I just click [twice] to log back on. But I must do that to see the screen display - say to see what's playing on Pandora.
Can I set the auto-logout-time somewhere or disable the function?
1. I didn't like the icon theme and changed it to Ubuntu Mono Light. But is there a way to get the Min/Max/Close buttons to how they are in Radiance when maximized, or is that dependant on something else?
2. Is there a way to disable the Unity dock, but not the Unity feature where the Min/Max/Close go into the command bar?
I would like to create an unattended install ubuntu 10.10 cd. I have followed the ubuntu [URL].. on creating the preseed file, however, I can't find any useful tutorial on how to set the kernel parameters to perform an unattended install using my preseed file.
