Hello everyone, I have installed Fedora 8 on my Acer aspire 4720 laptop.I upgraded to the kernel 2.6.24.4-64.fc8.When I say safely remove on a USB drive the icon disappears from the desktop but the light in the USB drive does not switch off.In Windows XP the light is also turned off automatically.What is the problem?How to rectify this?
On Fri, 2008-04-11 at 12:03 +0530, Rohan Kulkarni wrote:
When I say safely remove on a USB drive the icon disappears from the desktop but the light in the USB drive does not switch off. In Windows XP the light is also turned off automatically. What is the problem?
My USB flashdrive's light stays on all the time that there's power on the USB port (i.e. all the time the computer's turned on). It blinks when things are being done on the drive, but that's all. It does this the same on Windows and Linux.
This behaviour may depend on your particular drive, and any special drivers or software available to control the LED in a specific way.
On Fri, 2008-04-11 at 12:03 +0530, Rohan Kulkarni wrote:
Hello everyone, I have installed Fedora 8 on my Acer aspire 4720 laptop.I upgraded to the kernel 2.6.24.4-64.fc8.When I say safely remove on a USB drive the icon disappears from the desktop but the light in the USB drive does not switch off.In Windows XP the light is also turned off automatically.What is the problem?How to rectify this?
I don't know why this is true but what you describe is what happens with USB flash drives. Winndows shuts off the drive light but fedora does not. It is clearly that the two OSs handle the drive differently. But if the drive is unmounted you can safely remove it. -- ======================================================================= Kilroe hic erat! ======================================================================= Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam@sbcglobal.net
Aaron Konstam wrote:
On Fri, 2008-04-11 at 12:03 +0530, Rohan Kulkarni wrote:
Hello everyone, I have installed Fedora 8 on my Acer aspire 4720 laptop.I upgraded to the kernel 2.6.24.4-64.fc8.When I say safely remove on a USB drive the icon disappears from the desktop but the light in the USB drive does not switch off.In Windows XP the light is also turned off automatically.What is the problem?How to rectify this?
I don't know why this is true but what you describe is what happens with USB flash drives. Winndows shuts off the drive light but fedora does not. It is clearly that the two OSs handle the drive differently. But if the drive is unmounted you can safely remove it.
As far as I know, Linux does not shut down the power to the USB socket when you "safely remove" a drive. It is something that could be added, though it will not be simple. (Does the drive have more then one partition, is it a multi-card card reader, etc.)
Mikkel
On Fri, 2008-04-11 at 09:43 -0500, Mikkel L. Ellertson wrote:
As far as I know, Linux does not shut down the power to the USB socket when you "safely remove" a drive. It is something that could be added, though it will not be simple.
I don't think that you could do that. Even if you could, how would it then tell if something was plugged back in again? It couldn't.
Tim wrote:
On Fri, 2008-04-11 at 09:43 -0500, Mikkel L. Ellertson wrote:
As far as I know, Linux does not shut down the power to the USB socket when you "safely remove" a drive. It is something that could be added, though it will not be simple.
I don't think that you could do that. Even if you could, how would it then tell if something was plugged back in again? It couldn't.
You have to turn the power back on. But how long do you wait? I don't know enough about USB to know if they can detect when the device is removed if it is powered down. It may also be possible to tell a device to shut down.
As far as turning the power off, I know the kernel can do it. There were a couple of kernels that were enforcing the power limits on USB sockets, but it was causing too many problems for users. Each device is supposed to report its maximum power draw, and each hub is supposed to report how much each port can draw, as well as the total for the hub. If you plug in a device that draws more then the port can handle, or enough devices that you exceed the hub total, the port is supposed to shut down.
Mikkel