Slow USB device(s)

Getting your soundcard to work, using Debian on non-i386 hardware, etc

Slow USB device(s)

Postby ^Ispex » 2017-10-08 05:49

I am a newbie to Debian and this question has probably been asked a million times. But why is USB transfers so slow? And is there a way to speed it up?

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uname -a
gives me the following output...
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Linux schizo 4.9.0-4-amd64 #1 SMP Debian 4.9.51-1 (2017-09-28) x86_64 GNU/Linux


And I am running Debian as a client machine with GNOME 3 as the DE.

I noticed some postings on the net regarding fixing this for ubuntu. But I don't want to fool around with GRUB unless I have to and I don't know how to approach this under Debian.

Thanking you in advance,
Jonathan.
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Re: Slow USB device(s)

Postby debiman » 2017-10-08 08:13

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dmesg -w

enter this command, leave the terminal open, plug in the usb stick and see what lines appear.

also
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lsusb -t
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Re: Slow USB device(s)

Postby arzgi » 2017-10-08 10:42

I would also check the bios settings, that usb hi speed is enabled.
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Re: Slow USB device(s)

Postby Thorny » 2017-10-08 11:52

^Ispex wrote:I noticed some postings on the net regarding fixing this for ubuntu. But I don't want to fool around with GRUB unless I have to and I don't know how to approach this under Debian.

Why do you think GRUB (the bootloader) would have any effect on USB transfer speed? What Ubuntu posting are you reading?


How have you determined "slow", slow compared to what? Are you connecting to USB2 or USB3 ports and with thumb drives (sticks) or with hard drives or SSDs in an enclosure? Different quality of stick and/or enclosure can affect transfer speed as well as speed differences of older and newer types of port. Presumably, your system is newer than USB1. Sometimes there are even differences if a enclosure is connected directly or through a hub. Tell as much as you can about your system.

Without knowing under what conditions you observe "slow" is really isn't possible to reasonably speculate on the answers you desire. debiman is trying to help you find information with the "lsusb -t" command, it shows a "tree" of connected USB. The dmesg log will contain other info about what is attached but I am not familiar with -w switch that was mentioned.

[Edit] I am now, I read the man page.
-w, --follow
Wait for new messages. This feature is supported only on systems with a readable /dev/kmsg (since kernel 3.5.0).
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Re: Slow USB device(s)

Postby debiman » 2017-10-08 17:17

^ yes, i was a little too quick.
more basic information is required first.

^Ispex wrote:I am running Debian as a client machine

i wonder what that means.
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