A few wide and varied questions about Linux in general

I've had a few "I wonder..." things noodling in the back of my head for a while now about the Linux kernel, and how Linux works in general. Yes, I could just install LFS to answer them, but I like knowing what I'm doing before I do it and asking is typically an awesome way to do that
So, here are a bunch of questions. Answer what you know, speculate on what you think. Feel free to answer just one or all of them.
Also, if you feel inspired from these questions or just this thread's very existance and want to ask questions of your own please do!
Compilation questions
When I compiled Openbox recently, it linked such that I can't move it out of my home folder, and additionally, when I run /usr/bin/openbox, I end up executing /Users/dav7/openbox/openbox-3.4.7.2/openbox/.libs/lt-openbox - why is this, and how can I make openbox... not do the weirdness it's currently doing?
Library questions
- In Arch's initramfs image, klibc is named "klibc-EcjIkSXUojTZn3VHC4IxoFgq9Kg.so", at least it was at my last check. Why is this? Why/how do other programs link with this crazily named copy of klibc? How does library linking work actually? How did the linker know to use this klibc name and not something else?
- How do I specify that I want to link against a specific library, for example if I want to link a program against klibc when I have glibc installed? Do I have to create a chroot jail to convince the linker to see only the library I want it to?
- Can I build the Kdrive X server with klibc, or do I need ulibc or glibc? How much (read: what "class" or category of programs) will klibc link against without problems, especially in the X area? Will I need ulibc to build anything X-based?
-dav7
Last edited by dav7 (2008-10-12 12:06:24)

Er, I'm pretty sure I'm not an expert, so my "answers" will be almost surely incomplete/incorrect.
1) I suppose by "compiling openbox" you mean the standard "./configure; make; make install" procedure. Well, the "./configure" step lets you choose various paths related to the final product. Crunch through "./configure --help". "./configure" script creates/modifies all the makefiles, so that they reflect your choices of paths, and that's what's going to be used.
2) - dynamic linking is manages by /sbin/ldconfig - so have a look at 'man ldconfig'. that's how linker knows what's available.
- with klibc, I think you need to have the whole toolchain (binutils, gcc, klibc) adapted to klibc available to compile against klibc. Then it's a matter of compiling with those tools. I think it's impossible to use the standard gcc and binutils to compile against klibc.
- I have no idea about what compiles against klibc. I think not too much, and with heavy patching. I'm pretty sure you can compile some version of x server against uclibc (that's what openwrt does). Have a look at some small distros (slitaz, dsl) on how are they doing it.

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  • ILife 08 to 09 iWeb question (and a question about DW while I'm here)

    I was thinking of upgrading to iLife 09 for just a couple of reasons:
    (1) The iPhoto face recognition feature looks cool and I want to try it. I have tens of thousands of photos of friends from nearly 30 years in my iPhoto and it might be fun.
    (2) I basically like iWeb 08, but hate the way it deals with multiple sites. I always have to publish everything, but in iWeb 09 it looks like I can single out just a single site for publishing, even via FTP. is that right?
    Recently I also acquired Dreamweaver because of some work I'm doing for a company. But I find I can't even do basic simple things, like drag around text or insert a web widget (some HTML in a box) to move around and position - like I can do in iWeb.
    Are things like that possible in Dreamweaver?
    I can't even figure out how to add new text somewhere on a blank page in Dreamweaver. And everything I create looks boxy, plain and clunky. I am obviously not a web designer - I am a web application programmer.
    With Dreamweaver I feel like I stepped into some 20th century web authoring tool. With iWeb everything I create looks nice even though I have no artistic talent myself.
    doug

    I don't mind publishing to a folder and uploading using my FTP client, but it seems I have to publish ALL the sites each time to the folder and then just upload the one site's folder I was editing. So it takes a long time each time I publish to the folder. There is no way around that, is there?
    About my DW question, it was "in comparison to iWeb". If I asked in a Dreamweaver forum if DW could do this thing that iWeb could do, somebody would probably say, "Why don;t you ask your question on an iWeb forum?"
    Thanks,
    doug@hoping this discussion doesn't digress into whether I should post my question here or not

  • Verizon iPhone - mobile hotspot and other questions about the data options

    I just ordered the Verizon iPhone. Can anyone explain the options here:
    1) Unlimited corporate email & Web (business and personal email) vs. Unlimited email and web for smartphones (personal email) - what's the difference?
    2) "3G Mobile Hotspot 2GB" - does this mean that there's no way I can share my 3G connection via wifi without paying the extra $20/month?? How about tethering to a single computer (USB, BT, or WiFi) - does that also require this extra option?
    3) equipment protection - what's the difference between Extended Warranty, Asurion Wireless Phone Protection, and Total Equipment Coverage?
    thanks in advance,
    Mike

    Hi
    Regarding your #2 question; yes, you must pay $20/mo to use the 3G Hotspot aspect of the iPhone, same as with any of Verizon's phones that offer this feature such as the Droid X, HTC phones, etc. And, there is NO additional charge to tether it to your computer; it's $20/mo regardless. You can still use the iPhone's WiFi feature to search the web which is part of the regular data plan. We're only talking about paying the $20/mo for the "up to 5 devices" jumping on your phone as a hot spot.
    I'm an Apple fan, have my MacBook Pro, but my phone is a Droid X. I've been a Verizon member since a year before they became Verizon. Additionally, I am part of the Verizon & Motorola test forum; testing new software updates as they come along.
    Something you should know about Verizon's 3G Hot Spot feature; it has issues. Those of us in the Motorola & HTC forums have experienced identical issues with regard to the 3G Hot Spot feature; it disconnects every 2 minutes, even when you are actively surfing the net. Verizon & Motorola Support have been very helpful to provide what they believe are fixes, including: changing the channel, hard resets, clearing cache, etc. It does not work. Most of us believe, this is NOT a Verizon issue, but a phone maker issue.
    I also have Verizon's MiFi 2200. It costs $59/mo and is purely a hot spot device; again up to 5 devices. I use it at home, for my lap top and for those who need connectivity. It outperforms the 3G hot spot feature of the Motorola & HTC phones by leaps & bounds, and I suspect it will out perform the 3G hot spot feature on the iPhone. Additionally, you get 5GB of download with the MiFi which Verizon is planning on offering increases to 8GB & 10GB. There is NO plan to increase the 2GB download limitation on the 3G Hot spot of the iPhone & other phones, and anyone who does basic software downloads & pics, knows 2GBS is not a lot space.
    So, I would recommend not paying the $20 until this is resolved. If you do, you could pay $39 more for a total of $59/mo for the MiFi, download the software to you home computer & notebook, and end up canceling your home internet service. I did this and have saved $70/mo in my total utilities.
    One other important note: Verizon's VZManager Software for their phones & MiFi. If you did pay the $20/mo for the iPhone and decided to tether to your USB port (for power while using) and you were to use the 3G hot spot feature, it will NOT work on 64 Bit computers, regardless if you are using the WiFi feature or directly using VZManager. The MiFi has this same issue. It will only work on 32 Bit when tethered. So, you'd have to reboot your computer to 32 Bit, if you have that ability. On a Macbook Pro, simply restart holding down the "3" & "2" keys.
    I have no idea why Verizon can't simply upgrade the firmware, even recent firmware upgrades have not resolved this. Most new computers are 64 Bit now.
    Despite this, I use my MiFi 100% untethered and carry my charge cord in my bag as it also works on my Droid, and I presume they may do the same for the iPhone; reduces the need for multiple power cords.
    I really looked forward to the 3G feature of the Motorola & HTC phones, but honestly, it's just not there yet; mine was slower than Dial Up, and I'm not kidding.

  • Fan problem on L645-S4036 (temporary fix and a question about it)

    Ok, after some days of usage on this laptop, I have found that the fan only goes to 95% of usage when I'm playing, which is normal I think... BUT also goes crazy when I turn on the laptop, and I don't use for about 15 minutes, even if the temp is just fine, with no software running on the background.
    If I use it, the problem doesn't show up at all...
    The only way to turn it off and lower it to about 45% (if the computer is not hot), or 0% (is so nice like that... No noise at all), is suspending the laptop, and turning it up again. Really strange thing.
    I guess is a problem with the BIOS, or the temp calculation of it. Do anyone know if Toshiba is working on a BIOS update for this issue?
    I'm happy with this laptop, the battery which is faulty, lasts about 2.3 hours, not 3.9 hours as said at the specifications (not a problem, warranty is supposed to bring me a working replacement... Doing it tomorrow) and the fan noise are the only problems I have found after a month of use.
    I hope the temporary fix helps a bit...If anyone knows another way to fix it, reply me, because third party software didn't worked for me.
    Thanks a lot!

    I have TOSHIBA Sattelite L300. I have same problem. I installed SpeedFan to monitor CPU temp. I found something CRAZY about toshiba conception on temp. regulation!!! The fan stops when temperature of CPU goes under 30 degrees !!!!!!!! UN BELIEVABLE!!! It's very hard to be done... I can achieve this VERY HARD! In the room temp is 20 degr., outside is 10 deg. the laptop is on the table... cpu usage 1-2% !!!! Fan goes on AND NEVER STOPS, temp of cpu stays constantly at 35 deg. I pickup the laptop in air, or put a remote control of TV under front side, and miracle!!!! after a few minutes the temp goes to 29 deg and fan stops (of course if you standby and resume, fan stops too). But not for long... the temp. of cpu starts growing. first the temp grows fast, then it almost stops growing about 45 deg. and you say wow super! But than suddenly fan start (about 45 deg.) if it didn't start... the cpu temp wouldn't rise above 55 deg.
    I have another LAPTOP, Sony Vaio, I installed SpeedFan to monitor CPU temp too... This machine has a very different conception about cooling... I can't hear it FAN ever... Tha speedfan shows this: When you use machine actively, the cpu stays about 70 deg. tha fan speed varies very smooth (not on a steps like the toshiba laptop) and when you not using CPU actively, the fan speed drops to a very slow level, almost can't hear it... have to put my ear near to where the air goes out... and from this quiet speed, the cpu temps goes down slowly, and when it's about 60 deg. tha fan stops at all... and what I see in speedfan is that cpu temps raise very slowly to about 65 deg. (this is when the laptop is over me (not on the table with remote control for more air :-) ) the fan never start if I'm not using CPU actively and the temp stays about 65 deg., when I start using cpu a little more activily the fan starts at 74 deg (at lowest speed, not like the toshiba "Buuuu... buu... bbb" - on a few steps to the lowest level starting from high) and can't hear the fan is working, just see how the temp starts falling... and when achieves 60 deg. STOPS (but you can't hear it at all). So the concept is that when you are not using a CPU actively... the CPU can cool WITHOUT FAN RUNNING (at about 50-60 deg. PLEASE TEST IT). So I think TOSHIBA MUST DO SOMETHING ABOUT IT... I can't believe that engineers thinks that every 5 min. temp. jumps from 30 to 45 deg, from 45 to 30 and this is 24/7 (if you put your remote control under laptop and you live in a cool country where outside is 10 deg. and inside is 20). Instead of CPU at constant (or at least slowly changing) temp. This is not good for any machine (cooling, heating, cooling, heating... this is bad for machinery). The problem could be solved just by changing fan on temp to 74 and fan off to 65 deg. for an example...
    So I wait for a new BIOS version SOON, with updated values...
    Thank you! in advance...
    Other wise... NO CHOICE... change your laptop with a one with a better cooling concept...
    If any one needs more info or what ever, please feel free to contact me...

  • Satellite A660: Remark and a question about illumination/mute button

    Remark:
    Hi, I am a proud owner of a satellite A660-166 (3 days old) and I installed everything from scratch on the win 7 pro since I received my laptop with a home version (need pro for work)...I encountered some problems but this forum really answered all my questions :) Never found such a helpful forum for technical support. So I wanted to express my gratitude and my support for everything you do for the users :)
    Problem: Well, it's not really a problem, more of a curiosity... I had some problems with the eco button at that point illumination/mute button was for mute....Thanks to you guys I found out what needed to be done, I reinstalled Flash card software and everything was working properly plus the illumination/mute button was for illumination now. I don't have anything against that, I prefer it that way, but I'm wondering how do I change that...I found some unanswered thread about using toshiba assistant and the illumination tab...Since my laptop is pretty new, I don't have an illumination tab, I was wondering how do I change the button to mute if I want to?
    Thanks, keep up the good work!

    It is nice to hear you found answers to your questions here. Many people here try to help.
    Back to your issue: It is not easy to offer precise answer and I really dont know if you can change settings for one single button. I think it has something to do with registry entries but how to change it is another question.
    If you use this button for illumination ON/OFF you can use FN+ESC for MUTE option so you will have both options that can be used using one single button or quick key combination.
    Can you please test it and confirm it works properly?

  • Power problems and a question about Zen support respo

    I have a Zen Micro 8gb player and unfortunately I can now be added to the list of users with Battery/charging issues. I've tried all the troubleshooting steps I can find here and none resolved my problem. Resetting does not help, nor does charging via USB/AC Adapter, I've tried switching adapters, etc. I've never had this issue before.
    The problem started a few days ago when I plugged my Zen in like normal to charge - it was completely dead - and after several few hours of charging, I was still unable to turn my device on. I plug the charger in and the device does recognize it, it powers on and I get the blue light and "Creative" logo on the screen. Then the little battery icon flashes between the green "charging" icon and the red "empty battery" icon. It will go on like this for hours. Normally it would only take an hour or two to charge but now I can leave it charging for an entire day then it goes dead right after I unplug it.
    My question is - based on user experience here - whether it's probably my battery or my device that is defecti've. This was a gift and I'm sure it is out of warranty, not that I'd be able to get the receipt even if it was. I've already emailed customer care. I'm just wondering what people's general overall experience has been with support and if it's even worth trying to go through the support channels to get it fixed. Thanks in advance.
    Kristal?

    I am having the same problems....only I can't even get mine to come on. I have only had this thing for like 5 months.....if I would have known I was gonna have this many problems.... I would have went with another brand. And it would really help if I could get someone to give me a straight answer when I call! I am SOSOSO irritated!!

  • E71x problem, and a question about 'physical damag...

    Hiya,
    Soooo I got the E71x in June, and I loved it, until about a month ago, it started frustrating me non stop.
    The phone will tell me that its battery is low after I've charged it completely, and have seen 5 bars worth of power for 30 mins;
    it will turn off without shutting down, without alerting me
    it will freeze, and won't turn off with the power button--the only thing to do is pull the battery out;
    it will tell me the sim card isn't registered and then turn off
    OR
    the screen will go blank, turn white, and display a message that says 'Insert SIM card' when the sim card is already in, and hasn't been moved or anything;
    the phone will die when I try to send text messages, call someone, or the first 30 seconds into a call;
    whenever the phone dies on me, I have to pull the battery out & then turn the phone back on, and when I do so a ghost image of whatever i had been doing before the phone died (the text i was about to send, for instance, or the home screen, or the 'insert sim card' screen) will appear for a second, pixelate, then vanish.
    I called AT&T, they do not believe that it is a charger or battery issue, since I've checked those anyway. My software is up to date, I've tried all the online troubleshooting tips. I've obviously dropped my phone before, who hasn't, but it was never anything *huge*, the phone never turned off because I dropped it, the battery never popped out, etc. It has fallen from my jeans to the floor, for example, that's about it. So there's no physical damage because of that. I have never gotten the phone wet;---the circle on the back of my battery is white, so it hasn't been exposed to liquid or heat or anything extreme. I don't think my warranty would be turned down for physical damage due to the above mentioned.
    However, I have a question if anyone who works for Nokia reads these boards; my parrot removed the 'p' key from the keyboard--just the key, the pad underneath works fine and is untouched, i can still type the letter p and everything--but the 'p' key, just that one, is missing. I can't find it. Would I really be denied my 1 year warranty because of that? is there anyway I can buy a key to replace the 'p' key so that I could send my phone to AT&T? all it would need to be fixed is a tiny dab of glue. That's it. I will be very frustrated if I can't get my phone fixed within warranty because of that key; I would be forced to get another phone, and I don't think my choice would be another Nokia. Please let me know what I can do about this problem, it's getting ridiculous, I can't even answer phone calls without my first rushed sentence being 'my phone might hang up on you but i'll call you back' anymore.
    HELP
    Solved!
    Go to Solution.

    hahaha no, it's not the e71x, it is a piece of popcorn she DEVOURED. She LOVES popcorn. MMMmmmmMMMM she says. Haha.
    @FastTortoise, I think a parrotlet might be a good fit for you, they were my pick because they have the same personality as a parrot (spunky, loving, fun, funny, etc) but they're TINY, and VERY quiet (comparatively::they've got nothing on cats). Check out this site for more info http://www.talkparrotlets.com/forum.php my name on there is brittany_lynn, you might be able to get my email from that site or from this, lemme know if you have ?'s or anything
    P.S. All birds need a cage, a parrotlet just needs a smaller cage.

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