Must unplug & replug hub to get flash drive recognized
In your experience, are flash drives recognized when plugged into hubs (vs.
directly into a port on the computer)? By recognized I mean the LED on the flash drive lights up, a Konqueror window opens showing the drive's contents, and an icon appears on the desktop. I have one system that will not recognize flash drives plugged into a hub. Nothing happens! This was true with two different brands of USB 2 hubs (Radio Shack Gigaware and D-Link). There are no flash drive recognition problems when using these two hubs on a different system. However, when using a third brand (Belkin), which happens to be USB 1, the flash drive is recognized! Why? I would just use this Belkin except I also have a DVD drive plugged into the hub, and USB 1 is too slow. With the "non-working" hubs, I can get the flash drive recognized by unplugging and re-plugging the hub's usb cable. I have to do this every time I insert the flash drive. All of the hubs mentioned are powered and connected to their AC adapters. I was unable to find anything on Google about this. What comments do you have? Is there anything I can do to get this working properly? Thank you. |
Not a expert but I think that the kernel sees the usb-hub as a single device much like a multicard-reader. When you un-plug & plug-in the hub when there is a device in the hub it's able to detect the hub and what is pluged into it. I have been reading a lot about this trying to get a better understanding of how events are generated with devices and what the kernel, udev, & hal are capable of doing.
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I have one system that will not recognize flash drives plugged into a hub. Nothing happens! Anyway, hope this helps. |
An unexpected solution
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Like many Linux systems, this one has been running for so long I can't remember when it was last booted. I have disconnected/reconnected the hub's ac adapter and usb cable many times, but it never entered my mind to try rebooting the computer itself. I would not have thought that rebooting would have any effect on this problem. So it took a power failure for me to discover this! So everyone out there add "reboot the system" to your list of things to try if you have a funky behaving usb hub. |
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