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  • how to find a good wireless PowerPoint controller device?

    - by Reid
    I'm looking for a wireless gadget to advance PowerPoint slides, and would also work with Keynote or whatever on a Mac. Sub-questions: (a) What are these things called, so I can search for them. (b) What is a reasonable price point - the cheap ones seem to be under $20, and name brand seem to be $40 or $50. Do the cheap no-name devices work? (c) Specific device recommendations. Many thanks, Reid

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  • sudoer scheme for another web developer that retains my future control of a virtual server?

    - by Tchalvak
    Background: Virtual Private Server I have a virtual private server that I'm looking to host multiple websites on, and provide access to another web developer. I don't care about putting too many constraints on him, though I wouldn't mind isolating the site that he'll be developing from other sites on the server that I will develop. The problem: retain control Mainly what I want is to make sure that I retain control over the server in the future. I want to reserve the ability to create/promote/demote and other administrative functions that don't deal with web software. If I make him an admin, he can sudo su - and become root and remove root control from me, for example. I need him not to be able to: take away other admin permissions change the root password have control over other security/administrative functions I would like him to still be able to: install software (through apt-get) restart apache access mysql configure mysql/apache reboot edit web development configuration type files in /etc/ Other Standard Setups would be happily considered I've never really set up a good sudoers file, so simple example setups would be very useful, even if they're only somewhat similar to the settings that I'm hoping for above. Edit: I have not yet finalized permissions, standard, useful sudo setups are certainly an option, the lists above are more what I'm hoping I can do, I don't know that that setup can be done.

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  • Does Gigabit degrade all ports to 100 megabit if there is a 100 megabit device attached?

    - by hjoelr
    Our company is buying some HP Procurve managed gigabit switches to replace some of our core switches. However, we aren't able to upgrade all of our switches from 100Mb to Gigabit switches. I think I know the answer but I'm not exactly sure. If we plug those 100Mb switches (or even a 100Mb device) into those Gigabit switches, will the performance of the entire switch drop to 100Mb or will just that one port work at 100Mb?

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  • How to install non Microsoft USB device driver on PC without admin rights?

    - by Ron
    I am running Win 7x32 secured corporate laptop. My USB audio device has .exe installer file which is not possible to execute because of having no admin rights. Is it possible to embed driver files in the system without installation? All attempts of unpacking the .exe file got failed. 7zip is extracting files without extensions and Universal Extractor says that .exe file is 7zip self extracting archive. Thank you Ron

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  • framebuffer not available. How to install the device /dev/fb/0 on Ubuntu?

    - by Aleyna
    I am trying to run an application that uses framebuffer on 2.6.31-14-generic #48-Ubuntu. All need to do is to install a framebuffer device to get rid of the following error. /dev/fb/0: No such file or directory framebuffer not available. FATAL: no framebuffer available I googled through and found some resources indicating to do that on Grub2 I got nothing though I followed them seamlessly. Any ideas? Thanks

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  • If I uninstall Bonjour and Apple Mobile Device Support will transferring songs to my ipod via itunes

    - by Kate
    I am one of those people who hate to have even one unnecessary program installed. I noticed when I downloaded and installed itunes two other components were installed and shows up in my control panel Uninstall programs screen: "Bonjour" and "Apple Mobile Device Support". Are these two necessary for itunes to work? I never buy songs via itunes, just use the program to transfer smp3s to my ipod.

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  • should I put my multi-device btrfs filesystem on disk partitions or raw devices?

    - by Glyph
    If I'm going to create a multi-device btrfs filesystem. The official recommendation from the documentation apppears to be to create it on raw devices; i.e. /dev/sdb, /dev/sdc, etc, but this is not explained. Are there any advantages to creating a partition table on these devices first, either GPT or MBR, and then creating the filesystem on /dev/sdb1, /dev/sdc1 et cetera? Does feeding btrfs whole devices have some particular advantage, or are these basically equivalent?

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  • sudoer scheme to allow useful access to another web developer yet retain future control of a virtual

    - by Tchalvak
    Background: Virtual Private Server I have a virtual private server that I'm looking to host multiple websites on, and provide access to another web developer. I don't care about putting too many constraints on him, though I wouldn't mind isolating the site that he'll be developing from other sites on the server that I will develop. The problem: retain control Mainly what I want is to make sure that I retain control over the server in the future. I want to reserve the ability to create/promote/demote and other administrative functions that don't deal with web software. If I make him an admin, he can sudo su - and become root and remove root control from me, for example. I need him not to be able to: take away other admin permissions change the root password have control over other security/administrative functions I would like him to still be able to: install software (through apt-get) restart apache access mysql configure mysql/apache reboot edit web development configuration type files in /etc/ Other Standard Setups would be happily considered I've never really set up a good sudoers file, so simple example setups would be very useful, even if they're only somewhat similar to the settings that I'm hoping for above. Edit: I have not yet finalized permissions, so standard, useful sudo setups are certainly an option, the lists above are more what I'm hoping I can do, I don't know that that setup can be done. I'm sure that people have solved this type of problem before somehow, though, and I'd like to go with something somewhat tested as opposed to something I've homegrown.

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  • Is there a way to detect which port on an ethernet switch a device is connected to?

    - by banno
    Since the wall jack is typically always connected to the same port on the switch I would like to be able to know which device is connected at a specific location. In my case I am talking about printers. I have code to go out on the network and find the IP Address of all of my printers, but would like to be able to update a server based on a printer being swapped out of a location for maintenance or repair. Is there a method for determining a port connection?

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  • Is data=journal on a separate device on Ext4 as good as using a RAID controller with battery backed cache for file system consistency?

    - by Jeff Strunk
    It seems to me that data=journal prevents file system inconsistency in the case of power failure. Using it with a dedicated journal device mitigates the performance penalty of writing the data twice. A power outage would still lose the data that is currently being written to the journal, but the file system on disk would always be consistent. If that amount of loss is acceptable, is a RAID controller with battery backed cache really worthwhile?

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  • What is the significance of having the correct hostname for a cloud server in the control panel of the hosting company

    - by Logo
    What could be a problem that could arise if i do not have the correct hostname as my device name for the cloud server in a control panel of my hosting company basically the device name is supposedly the hostname when i created the cloud server they ensured this was my hostname for my new cloud server. but it looks like they will not allow me to use a domain name that is all digits. currently my host name in the cloud server itself is a domain name that is all digits.

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  • iPad + OpenGL ES2. Why the Puzzling Virtual Memory Spike During Device Reorientation?

    - by dugla
    I've been spending the afternoon starring at Xcode Instruments memory monitor trying to decipher the following memory issue. I have a fullscreen OpenGL ES2 app running on iPad. I am fanatical about memory issues so my retains/releases are all nicely balanced. I closely monitor memory leaks. My app is basically squeeky clean. Except occassionally when I reorient the device. Portrait to Landscape. Back and forth I rock the device stress testing my discarding and rebuilding of the OpenGL framebuffer. The ambient memory footprint of my app is about 70MB Real Mems and 180MB Virtual Mems. Real memory hardly varies at all during device rotations. However the virtual mems reading sometimes briefly spikes up to 250MB and then recedes back to 180MB. No real pattern. But clearly related discarding/rebuilding the framebuffer. I see random memory warnings in my NSlogs but the app just hums along, no worries. 1) Since iPhone OS devices don't have VM could someone explain to me what the VM reading actually means? 2) My app totally leak free and generally bulletproof dispite the VM spikes. Never crashes. Rock solid. Should I be concerned about this? 3) There is clearly something happening in OpenGL framebuffer land that is causing this but I am using the API in the proper way: paraphrasing: Discarding the framebuffer: glDeleteRenderbuffers(1, &m_colorbuffer); glDeleteFramebuffers(1, &m_framebuffer); Rebuilding the framebuffer: glGenFramebuffers(1, &m_framebuffer); glGenRenderbuffers(1, &m_colorbuffer); Is there some other memory flushing trick I have missed? Thanks for any insight. Cheers, Doug

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  • iPod touch debugging: Error on install/run only if app exists on device already?

    - by Ben
    Hi all, I am using an iPod to test an app. The device is all set up with the right provisioning profiles, etc-- that's not really the issue. But every time I start the app from Xcode on the device, I get the "A signed resource has been added, modified, or deleted." error from the Organizer window. Wait, I know, you think it's a provisioning profile problem. But here's the kicker: if I just delete the app from the iPod (using the main screen) and try again, it works fine. I only get this error when the app is already installed. The other kicker is that this behavior doesn't happen on an iPhone that I have for occasional testing-- on that device, I can start/restart/restart indefinitely. But using the iPod, my compile-run-test cycle is annoyingly slow since I have to manually delete the app each time. Any ideas? I'm using Xcode 3.2.2 (prerelease) FWIW. The iPod has stock OS 3.1.2 on it. Thanks!

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  • nfs (netapp) question: how to map the device shown in sar -d to the data volume?

    - by Daniel
    Using sar I can see device nfss24 is very busy, but how to know which data volume (file system) the device is for? sar -d 1 10|egrep "busy|nfs" SunOS phxdbnfs11 5.10 Generic_141414-07 sun4v 04/14/2010 19:03:27 device %busy avque r+w/s blks/s avwait avserv 19:03:28 nfs23 0 0.0 0 0 0.0 0.0 nfs24 100 1484053.4 504 32123 2944300.0 47.5 nfs25 0 0.0 0 0 0.0 0.0 nfs26 0 0.0 0 0 0.0 0.0 nfs27 107 1.1 0 0 0.0 0.0 nfs28 107 17.0 0 0 0.0 0.0 nfs29 100 13109.5 460 29435 28451.7 52.0 nfs30 0 0.0 0 0 0.0 0.0 nfs31 107 9.6 0 0 0.0 0.0 nfs32 0 0.0 0 0 0.0 0.0 nfs33 107 1.1 0 0 0.0 0.0 19:03:29 nfs23 0 0.0 0 0 0.0 0.0 nfs24 100 1483762.8 530 33709 2797054.5 45.1 nfs25 0 0.0 0 0 0.0 0.0 nfs26 0 0.0 0 0 0.0 0.0 nfs27 107 1.1 0 0 0.0 0.0 nfs28 107 17.0 0 0 0.0 0.0 nfs29 100 12800.8 511 32732 25016.0 46.8 nfs30 0 0.0 0 0 0.0 0.0 nfs31 107 9.6 0 0 0.0 0.0 nfs32 0 0.0 0 0 0.0 0.0 nfs33 107 1.1 0 0 0.0 0.0 19:03:30 nfs23 0 0.0 0 0 0.0 0.0 nfs24 100 1483080.4 761 48162 1950073.8 31.4 nfs25 0 0.0 0 0 0.0 0.0 nfs26 0 0.0 0 0 0.0 0.0 nfs27 107 1.1 0 0 0.0 0.0 nfs28 107 17.0 0 0 0.0 0.0 nfs29 100 12406.7 737 46855 16800.7 32.4 nfs30 0 0.0 0 0 0.0 0.0 nfs31 107 9.6 0 0 0.0 0.0 nfs32 0 0.0 0 0 0.0 0.0 nfs33 107 1.1 0 0 0.0 0.0

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  • Mobile detection - Meta tag and max-device-width vs. php user agent?

    - by nimmbl
    Which form of mobile detection should I use and why? <meta name="viewport" content="width=320,initial-scale=1,maximum-scale=1.0,user-scalable=no" /> <link media="only screen and (max-device-width: 480px) and (min-device-width: 320px)" href="css/mobile.css" type= "text/css" rel="stylesheet"> <link media="handheld, only screen and (max-device-width: 319px)" href="css/mobile_simple.css" type="text/css" rel="stylesheet" /> Or include('mobile_device_detect.php'); $mobile = mobile_device_detect(); And why on earth would this: <?php if(strpos($_SERVER['HTTP_USER_AGENT'], 'iPhone') !== false) { ?> <meta name="viewport" content="width=320,initial-scale=1,maximum-scale=1.0,user-scalable=no" /> <link media="screen" href="css/mobile.css" type= "text/css" rel="stylesheet"> <?php } else { ?> <link media="screen" href="css/mobile_simple.css" type= "text/css" rel="stylesheet"> <?php } ?> ignore this css? body { background: -webkit-gradient(linear, left top, left bottom, from(#555), to(#000)); }

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