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  • Fedora12 Slow USB 2.0 Write Speed, ehci_hcd module is missing

    - by MA1
    I am using Fedora 12, the problem I am facing is USB 2.0 write speed. I have a dual boot system with Windows XP and Fedora 12. USB 2.0 write speed in Windows XP is much faster then what I am getting in Fedora 12. After searching Google I came to know that ehci_hcd module is missing/not present in my system. ehci_hcd module is neither loaded nor it is present in the available list of modules. Can someone guide me how to fix this issue? Does ehci_hcd have something to do with USB 2.0 write speed? Do I have to recompile the kernel and add/enable the ehci_hcd module?

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  • How to disable power to USB ports when laptop is in sleep mode

    - by Greg
    I have a Windows7 laptop with two external 2.5" HDDs and a cooling pad connected through USB ports. When I put the laptop to sleep, these devices are still powered on - the fan in the cooling pad is still spinning, the drives are still spinning. I want to set it all up so that they power down when in sleep. I tried setting the Allow the computer to turn off this device to save power option in the USB Root Hubs' Properties in Device Manager and enabling USB selective suspend in power options - it didn't work. As it's a laptop, BIOS options are extremely locked down, so I can't even see anything relevant to sleep in there. Is it even possible to do this?

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  • USB driver problems (Windows 8.1)

    - by HelloWorld
    Every time I turn on my laptop the USB ports don't work and the drivers have an error. In order to fix this I'm forced to start the Device Manager, uninstall all the USB drivers, open the Control Panel, click Find and fix problems (under System and Security), click Configure a device (under Hardware and Sound) and then when that window pops up just hit Next until I can see my USB drivers reinstalled and working in the Device Manager window under Universal Serial Bus controllers. I found this way to fix it but I would like a permanent solution so that I don't have to do this every time I turn on the machine. Any ideas? When I bought the machine it had Window 7 installed but I later upgraded it to Windows 8.0 and then 8.1 after that.

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  • CPU load, USB connection vs. NIC

    - by T.J. Crowder
    In general, and understanding the answer may vary by manufacturer and model (and driver, and...), in consumer-grade workstations with integrated NICs, does the NIC rely on the CPU for a lot of help (as is typically the case with a USB controller, for instance), or is it fairly intelligent and capable on its own (like, say, the typical Firewire controller)? Or is the question too general to answer? (If it matters, you can assume Linux.) Background: I'm looking at connecting a device (digital television capture) that will be delivering ~20-50 Mbit/sec of data to a somewhat under-powered workstation. I can get a USB 2 High-speed device, or a network-attached device, and am interested in avoiding impacting the CPU where possible. Obviously, if it's a 100Mbit NIC, that's roughly half its theoretical inbound bandwidth, whereas it's only roughly a tenth of the 480 Mbit/second the USB 2 "High Speed" interface. But if the latter requires a lot of CPU support and the former doesn't...

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  • Two wim files at grub4dos for USB memory

    - by WindStory
    I have Two wim files at grub4dos for USB memory, the one is win7 pe, and the other one is win 7 installation. This is the menu.lst for my USB. title 1-1. Win7PE \n find --set-root /BOOTwin7peMGR chainloader /BOOTwin7peMGR root title 1-2. Win7 Installation \n find --set-root /bootwin7installmgr chainloader /bootwin7installmgr #title root The Win7PE's wim file is located at "bcd/man7pe_Boot.wim" and "Win7 Installation"'s wim file is located at "sources/boot.wim". But when I click "Win7PE" or "Win7 Installation", usb boots "Windows 7 installation" sreen. Is there any tool for wim boot menu?

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  • why is usb disk corrupted by Vista restore

    - by Martin
    I have a laptop with Vista Business on an 80GB disk. I have created a full backup and stored that on the original 80GB drive. On my new 320GB disk, I have created a partition with exactly the same number of bytes as the original 80GB disk. I swap the disks so that the 320GB is internal, and the 80GB is in a USB caddy. I boot from the NEO restore CD and everything looks fine: I select the dump on the USB drive, target is drive C:, start the restore. After a few seconds, the restore fails with "not enough disks in machine or disk not large enough" error (I did note the exact phrase). I then swap the 80GB disk back to the internal drive, but the thing is unbootable. Why has the restore process scrubbed the boot status of the USB drive ?

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  • How to create a bootable Ubuntu Linux (10.04) USB installation for Macintosh

    - by vdavidovski
    I tried searching the Internet, but could not find a decent tutorial explaining how to create a bootable Ubuntu Linux (10.04) USB installation that could be run not only on a PC but also on Macs and MacBook Pros. In addition, I tried refit, but ended with "Missing operating system" error. Here is basically the layout of my bootable under PC Ubuntu USB drive (using MBR): Partition 1 (ext3, bootable) - Ubuntu Linux 32 bit, contains also grub2 bootloader. Partition 2 (ext3) - Ubuntu Linux 64 bit. Partition 3 (fat32) - contains data. What would be the best way to enable this drive to boot under Mac OS X? And if refit has to be used, could I simply have one more partition on the USB drive containing it? Thanks!

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  • How can you tell a USB cable version?

    - by Keltari
    Here is a question a student asked me in one of my A+ certification classes: How can you tell a USB cable version? I honestly dont know the answer, I cant find one either. USB cables are rated for versions 1, 1.1, 2, and now 3. I have seen their versions on the packaging, but never marked on the cable itself. Since the respective versions are manufactured differently, there is a difference between them. So, how can you tell? On Wikipedia: USB cables v.2 and earlier do use a "twisted pair" method, but doesnt specify if the cables themselves are the same or different. Is the cable rating system for v.2 and earlier just marketing hype?

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  • USB port not recognising mouse on first bootup

    - by Pacifika
    On a computer here when first powered on the USB wired mouse is not recognised. The light under the mouse is not lit up. Other usb hub's and keyboards work fine. Disconnecting it and reconnecting it fixes the issue, even after a restart - after the pc is switched off for a length of time (for example overnight) the problem reappears. I swapped the mouse, updated the bios and installed updated intellimouse drivers, turned of power saving on the usb ports. Any ideas?

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  • How to create a bootable Ubuntu Linux (10.04) USB installation for Macintosh

    - by vdavidovski
    I tried searching the Internet, but could not find a decent tutorial explaining how to create a bootable Ubuntu Linux (10.04) USB installation that could be run not only on a PC but also on Macs and MacBook Pros. In addition, I tried refit, but ended with "Missing operating system" error. Here is basically the layout of my bootable under PC Ubuntu USB drive (using MBR): Partition 1 (ext3, bootable) - Ubuntu Linux 32 bit, contains also grub2 bootloader. Partition 2 (ext3) - Ubuntu Linux 64 bit. Partition 3 (fat32) - contains data. What would be the best way to enable this drive to boot under Mac OS X? And if refit has to be used, could I simply have one more partition on the USB drive containing it? Thanks!

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  • Bootable ISO to USB stick xp wuickest method

    - by brux
    My dog took a leak on my PC when I went out (ye funny), now it reandomly restarts - im convinced the HDD is failing because the Windows seagate diagnostic program fails on a few tests. I want to run this prior to windows in an attempt to try and recover sectors, the program includes an iso which can be written to cd and booted, but i dont have any cd's. I tried using unetbootin to create the bootable usb from the iso file (SeaToolsDOS222ALL.576.ISO) but it doesnt work. When i boot from the usb hdd unetbootin loads with "default" in the menu. No joy booting though. I checked the usb hdd in windows and all the files are there, extracted from the iso file, wont boot though. Any ideas? Im using windows xp, or

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  • How to create one additional hidden partition in a USB drive

    - by backslash17
    For security purposes I need to locate a additional hidden partition on USB flash drive. The USB drive contains a security application that will check (in code) if the hidden partition exists. If not I will assume that the application is a non valid copy. Any idea about it? Thanks in advance. EDIT: There is already a programmed secure method to check if the USB drive is correct using the WMI Win32_drive class. The idea is to locate the drive info into the hidden partition and to check if it correct for anti-tampering procedures.

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  • USB 3 adapter for a dell 2850 with PCI (or PCIX) ports

    - by Don Dickinson
    Does anyone know if there is a plain PCI (or PCIX) USB 3 adapter. i understand the bandwidth of PCI < USB3, but it still beats the heck out of USB 2. i have some older dell 2850s that do not have the PCI E ports that most USB 3 adapters require. i'd really like to get usb3 in those servers. i searched the internet but didn't see any. the local computer store said they only had pcie adapters. tia, don

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  • Linux: disbale USB without disabling power

    - by Ergot
    TLDR I want toggle between the following usages of a usb-port via the terminal: use like a normal usb-port only supply energy to charge Story I recently got me something like a magna doodle that can save your drawings to pdf, which can be moved to your computer via usb afterwards. Now the thing is that you can't save anything while it's plugged in. Because it's the only way to charge it, it bugs me that I can't find a software solution and laziness I want to keep it plugged in and toggle the connection to the computer only when needed. I noticed that it's charging and usable when it is plugged in and the computer is shut down or suspened. So I guess that there's a way to do it. Tech info computer: ThinkPad X201 Linux Kernel: 3.14.5-1-ARCH "Magna doodle": Boogie Board Sync

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  • USB forwarding from dom0 to domU

    - by Karolis T.
    What are my options to forward two USB connected phones to xen guest? I've read about PCI-passthrough http://www.wlug.org.nz/XenPciPassthrough, but I'm sure usb controller in the server isn't a pci card. There's device level forwarding, but I need to forward two devices, this here doesn't say how to do it: http://www.olivetalks.com/2008/02/03/usb-forwarding-on-xen-it-just-does-not-work/ Would something as simple as: usbdevice = [ 'host:xxx', 'host:yyy', ] work? EDIT: I'm now starting a bounty. This is really important for me and for other people also, hoping someone who have this resolved will be able to help.

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  • Wireless controllers vs wireless usb hub

    - by David Jensen
    For my htpc i currently only have a steerin wheel as a controller. This is wired and it looks really bad having extended usb wires from the tv to the table. However im thinking of bying some new Gamepads and now comes the question. Should i buy wireless ones or wired and connect them to a wireless usb hub? Having a wireless hub would let me manage my gamepads easily from the couch. A wireless hub also allows me to connect other things that are not input devices from the couch. However im wondering if wireless usb hubs may not be made for input devices in the way that they may not have 100% uptime and probably some delay. Am i right about this?

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  • Booting from hard drive fails after installing Centos from USB Stick

    - by Rick
    I created a Centos Live 5.4 Bootable USB drive. I used this to install Centos on a HP Netbook. When the system goes to write the Grub boot loader to disk, it wants to write the boot loader to the usb drive (/dev/sda), not the hard disk (/dev/hda). I do have the option of writing the boot loader to /dev/hda, (not to the mbr!) but when I reboot I get an load error and the Grub prompt. How can I get Centos booting from the hard disk instead of using the USB key.

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  • Autoplay for USB drive keeps popping up

    - by Adam Haile
    I have a Seagate external 2TB USB drive that when I leave it plugged in, the Autoplay dialog asking what to do with the drive pops up about once every 30-60 minutes. No matter how many times I tell it to go away, it keeps coming back. I have tried multiple power supplies, USB cables, and all the USB ports on my machine...but it keeps doing the same thing. Also, this does not happen with the same drive on a different computer. Could this be some power or configuration setting that is causing this? I'm running Windows 7 x64 (the computer it works on is x86)

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  • MacBook Pro USB port provides more current in Mac OS X than in Windows

    - by AngryHacker
    I have a MacBook Pro with both Mac OS X Lion and Windows (under BootCamp) installed. While in Windows, I tried to charge my iPad 3 via the USB port. The iPad says "Not charging", but really, it does, just super slow (4-5% per hour). The reason for this is that the iPad requires 2.1 A of current, but a standard USB port provides 0.5 A. However, if I switch to Mac OS X, the iPad states that it is charging and it does at a rate of about 10% per hour. The only takeaway from this is that either OS X puts out more current on the USB port or that it recognizes the iPad and acts accordingly. Can someone provide more information on what is actually happening?

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  • Creating a command that compress a file and save it on a usb, but cannot detect the usb in linux.

    - by Lance
    First of all I can't detect the USB on linux using the command line. I check the directory dev and still cannot find the usb. used the df command to check the usb. I plug and typed df and then unplug and typed df again and nothing changed. We are using a server(telnet) to use the command line of linux on a windows 7 OS. The second problem I have is how can I execute the bash script that I have made. It seems that I cant put my .sh file in /usr/bin/ I would like to make my command executable in all directories like a normal command. Sorry, im still newbie at this things. This is what I get on staying on Windows too much. Sorry for my english. Thank you in advance.

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  • Printer demands specific USB port

    - by snitzr
    My HP laptop has 3 USB ports. When I add my printer driver by plugging into one of those ports, the driver installs fine. Problem: I have to install 3 identical drivers. One for each USB port. Depending on what USB port I have the printer plugged into, I have to pick the driver for that port. Question: How do I print to any of the three ports automatically based on what port the printer is in? Further into: In Devices and Printers Printer Properties Ports... I cannot select more than one port for a printer driver to print to.

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  • Wi-Fi or Bluetooth to USB converter

    - by yerzhik
    Is there a device, that works without a driver, you just connect it as usb, and receive any signal sent to it as if it were COM Port wired connection? For example, such a device that gets data sent to it by Wi-Fi network or Bluetooth and resends it to the USB. Of course it has to be set up once (network name, password etc) and for this purpose you need a driver, but once it is set up, you can use it at any computer without a driver. I have a Bluetooth USB, but I think it can't work without a driver. By just connecting it to any computer you can't find it in device list on another bluetooth device (as phone, etc).

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  • Connecting to a 2.5" laptop drive using USB

    - by user27449
    So I swapped my MBP hard drive with a SSD drive, and I want to connect to my old hard drive. I bought a nextstar 3 external 2.5" drive enclosure that has a USB 2.0 interface. I watched an online video of an older version of the enclosure, and in the video they had a ATA cable to connect to the drive. My enclosure didn't come with anything like that, and there doesn't seem to be a way to connect to my drive (my old drive is a seagate 500gb momentus 7200 RPM). My laptop is about 2 years old now (MBP 17"). The drive doesnt' have pins to connect, it has a wide plug type connector, and a USB connector also (I was able to directly plugin the USB cable to the drive, but didn't connect it to my computer, was just testing thigns out). Is it safe for me to directly connect the cable that came with the enclosure to the drive, and then connect the other end to my computer? Does this single cable provide power and data transfer?

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  • ubuntu 9.10 on an external usb drive: grub1 does not work

    - by Toc
    I have installed Ubuntu on a partition of my external usb drive. Since I had problems with grub2, I have uninstalled it and installed grub1. But then the usb drive didn't boot anymore, and I am forced to the limited shell of grub1. If I write manually kernel (hd0,4)/vmlinuz-2.6.31-15-generic root=/dev/sdb4 ro quiet splash initrd (hd0,4)/boot/initrd.img-2.6.31-15-generic boot then Ubuntu is loaded, but if I execute the commands root (hd0,4) setup (hd0) as explained at http://www.gnu.org/software/grub/manual/html_node/Installing-GRUB-natively.html#Installing-GRUB-natively, next time I boot from usb I am forced again to the grub limited shell. How can I restore a working grub?

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  • USB Mouse disconnects ONLY on bootcamp (win7,works fine on OSX) [duplicate]

    - by gourounakis
    This question already has an answer here: Why is my USB mouse disconnecting and reconnecting randomly and often? 7 answers I have a mid 2010 iMac with a Logitech G500 mouse which works fine on OS X. I game on Windows 7 in bootcamp, and for a month now I have been getting random mouse disconnects while gaming. Sometimes none, sometimes 2-3 per minute. The mouse lights go off and I get the disconnect sound from Windows 7 then it connects again after a second or two. I tried changing the port I connect the mouse to, but still the same thing. The only devices on USB are Apple keyboard with Apple extension cord, the mouse, and a Creative SoundBlaster Tactic 3D Alpha USB Gaming Headset. Any ideas?

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