How to force kernel to use a USB 2.0-compatible device (ehci_hcd) as a USB 1.1 device (uhci_hcd)
I've been using Linux for a long time now (very actively for almost 10
years now), and now I'm stuck with a configuration problem that
hopefully should be possible to work around.
I have a Linksys WUSB54GP wireless network adapter. It works well under
Windows, and even under Linux on my desktop PC (even using it as a USB
2.0 device). But on my laptop it's a different story. To cut a long
story short (see http://bugzilla.kernel.org/show_bug.cgi?id=6374), I'm
getting unexpected "USB disconnect" after a few hours (independently of
how much the device was used) when...USB 2.0 printers and USB 1.0/1.1 computers
I need a new printer, being fed up with the POS Epson 740 I have now.
I was considering an HP LaserJet 1012, but noticed it has a USB 2.0
port only. I've got a Rev B iMac with USB 1.0 or maybe (but I doubt
it) USB 1.1. I've searched the 'net to no avail as to whether 2.0
peripherals are backwards-compatible to older USB computers. Since
you all are a well-informed bunch, I figured someone here would know.
> I've searched the 'net to no avail as to whether 2.0
>peripherals are backwards-compatible to older USB computers. Since
>you all are a well-infor...USB 2.0 device assigned as USB 1.1
I am using RH7.3 (sort of a need so upgrading may be an issue)
I have a USB 2.0 PCI card which gets recognized properly. When I plug
in a USB 2.0 scanner, the scanner falls back to a USB 1.1 on the card.
I cant seem to find anything regarding how to resolve this. I found
a similar post (below) - but it was inconclusive. Any suggestions?
(other than upgrade)
########### here is the 2.0 entry ##################
T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 5
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hu...laptop usb 1.1 + scanner usb 2.0 + modem ADSL = ?????!!!!!*****
I have a laptop with a single USB 1.1 port. My new scanner (Epson 3170 usb
2.0) works fine with it and so does my ADSL modem but both can't work
together. I have tried to make them "cooperate" with a Sitecom Usb pocket
hub which needs an external power adapter and of course it doesn't work
without it; do you think it would work if I had one? Or is there any other
possibility (Pcmcia/usb card for example)? Thank you for your future wise
Good chance powered hub will work, but not guaranteed.
Is your modem USB only?
If ethernet also, as one more option, y...move ZFS mountpoint from USB 1.1 to USB 2.0 port
I created a mountpoint called /tdusb1 on a USB 1.1 port conncted to a
1TB LaCie hard drive. I discoverd that our system has a USB 2.0 port
and want to move the logical mountpoint to a new physical USB port.
How do I do it?
Actually, I will need to do the same sort of thing from one Solaris 10
system to another in the future. I don't care about plug-and-play and
hot swappable as long as I can read the same drive from different Sun
I assume that there are ZFS related commands for doing this but don't
want to experiment too much as the USB hard drive already has valuable
stuff ...How to detect if an USB Flash Stick/other device supports USB 2.0 (or only 1.1) ?
Is there a way or tool which allows me to detect if a (currently plugged in) USB Stick
resp other device (e.g.scanner) supports the USB version 2.0 or only USB 1.1 ?
...problem related to backward compatibility of usb 2.0 -> usb 1.1?
I've recently bought an external harddrive (Q - tec). It's great
stuff. The hdd combines lot's of storage space and small dimensions
with adequate speed because it runs on usb 2.0. Just plug it in and do
whatever you feel like doing. Needless to say, I've grown attached to
it. Then bad things started to happen. One night, my PC got fragged
(cooked MCU on motherboard). As a result, I was forced to use my dad's
computer in order to finish my work for school. It didn't have any
usb 2.0 slots, so I had to make due with usb 1.1.
I plugged it in, started Wi...USB 1.1 and USB 2.0
Could I use a win32 function to get the USB port is suport USB 1.1 or
I want to write a program to access the USB devices and show them is in
the USB 1.1 or USB 2.0.
Could everyone help me to find the function call?
Or where I can find any relative information?
Well, removable ms-dos devices such as USBs can be accessed through the
\\\\.\\PhysicalDrive#. Call the API QueryDosDevice(), and get a list of
all existing MS-DOS device names. You can also use the function
DefineDosDevice() to define the device name as well.
That said, whe...New Printer with USB 2.0 - Old PC with USB 1.1 Ports
I am FINALLY getting around to getting a new printer - but I have a 4
year old laptop that has two USB 1.1 ports. Will a new printer with a
USB 2.0 connection work with my laptop? I heard it will - but will be
slower than designed to be. I am planning on getting another HP
OfficeJet (my old one lasted 7 years!!!!).
Also, can I use a regular USB 1.1 cable? Is there a difference between
USB cables (2.0 different than 1.1?).
On 31 Jul 2006 17:25:13 -0700, firstname.lastname@example.org wrote:
>I am FINALLY getting around to getting a new printer - but I have a 4
>year o...USB Ports ... 1.1 and 2.0
The old iMACs (The blue ones, just a screen no box) has 2 USB 1.1
Can a printer with USB 2.0 be connected to the USB 1.1 port?
No special cables or adaptors?
In article <email@example.com>,
SpreadTooThin <firstname.lastname@example.org> wrote:
> The old iMACs (The blue ones, just a screen no box) has 2 USB 1.1
> Can a printer with USB 2.0 be connected to the USB 1.1 port?
> No special cables or adaptors?
Yes, it just won't run as...Question: USB 1.1 vs. USB 2.0
I know that USB 2.0 is much faster than USB 1.1, but I'm wondering if
there is a way to distinguish between the cables for the two. The
connectors can look identical; is there some other way of determining if
the cable I have is 1.1. or 2.0? Or is there a difference?
Thanks for your help.
On Mon, 6 Aug 2007 11:16:46 -0500, Preacher wrote
(in article <1i2f31u.1icj5no1utlq1cNemail@example.com>):
> I know that USB 2.0 is much faster than USB 1.1, but I'm wondering if
> there is a way to distinguish between the cables for the two. The
> connectors can look identica...Will USB 2.0 Flash memory work on a USB 1.0 port?
Will USB 2.0 Flash memory work on a USB 1.0 port?
I'm planning on upgrading my PowerMAC G4 to a Mac Pro in a month or
so. I've got a lot (10+ Gb) of sensitive data files I'd like to backup
on a small USB drive.
phule92 <firstname.lastname@example.org> wrote:
> Will USB 2.0 Flash memory work on a USB 1.0 port?
> I'm planning on upgrading my PowerMAC G4 to a Mac Pro in a month or
> so. I've got a lot (10+ Gb) of sensitive data files I'd like to backup
> on a small USB drive.
It should work, but will be slow.
Assume USB's best possible...usb error on external disc ?? hub 1-0:1.0:Cannot enable port 2
I want connext an external drive STOREX FHD-353 on my Linux 2.6.9-34
I have following error message "hub 1-0:1.0:Cannot enable port 2. Maybe
USB cable is bad. "
Do you have an idea ?
My computer is an K7AMD, with motherboard Micro star 6167 .
I think computer could onlly work un USB1.0 not USB 2.0.
External Hard drive is running before with another PC that use XP
...USB 1 with USB 2 external USB devices?
I notice some hardware (scanners, printers...) are advertised as having
I have a flat-panel iMac with USB 1. Is it possible to plug in a USB 2
device to one of my USB ports? Would it work (though presumably not as
fast as if plugged into a USB 2 port?
Alternatively, can the USB 1 be swapped out for a new USB 2 thingy? At
If these are silly questions, my apologies. I'm a non-techie throwback
to the old SCSI days, and USB/Firewire leave me bamboozled, but I don't
want to buy gear that won't work with my machine (and I don't have the
funds to replace t...