You can see which usb devices are attached by issuing the following command
cat /proc/bus/usb/devices
In order for this to work you need the following line in /etc/fstab
none /proc/bus/usb usbdevfs defaults 0 0
USB ports are detected when Knoppix boots from the CD in the kinfocenter, but after doing a hard drive installation, USB ports are not recognized in the kinfocenter. However, during the HD boot during the verbose mode, I notice that it says "USB hub found, 2 ports" which is exactly what I have on this computer. Plus, other sections of the kinfocenter indicate IRQ assignment and the pci section mentions usb also. If you are able to offer help, please be specific because I am new to this. Thanks in advance.
You can see which usb devices are attached by issuing the following command
cat /proc/bus/usb/devices
In order for this to work you need the following line in /etc/fstab
none /proc/bus/usb usbdevfs defaults 0 0
Thanks for your suggestion. However, when I type in the command (I am typing it in the command line (Alt+F2) )cat/proc/bus/usb/devices, it responds by saying "Could not run the specified command!" I also put in the line below you said to into the /etc/fstab but still no USB detection after rebooting. Does the "none" have to have a slash ( / ) in front of it? I'm new to this and trying to be patient with linux. thanks for your help
Originally Posted by aay
I learnt this yesterday. You need to do in addition to the fstab line a manual mount:
mount /proc/bus/usb
Next, you can check out the usbviewer by going through this meny Applications->Tools-> Usb view

OEM Genuine 42Wh WDX0R For DELL Inspiron WDXOR Battery 15 5567 5568 13 5368 7368
$22.99
Genuine OEM 63Wh 7FMXV Battery For Dell Latitude 5320 7320 7420 7520 4M1JN TN2GY
$32.99
New Genuine OEM Dell Latitude 5420 5520 3560 4 Cell Laptop Battery RJ40G M033W
$66.45
New Dell OEM Inspiron 15 3511 15.6" Battery 11.25V 41Wh 3467mAh G91J0 MGCM5
$85.45
OEM Genuine 86WH 69KF2 Battery For Dell XPS 15 9500 Precision 5550 M59JH M15 M17
$45.49
OEM Genuine 42WH YRDD6 Battery For Dell Inspiron 3493 3582 3583 3584 7586 3793
$29.79
Lot of 5 Dell OEM 240W 7.4mm 19.5V 12.3A Big Barrel AC Adapters Mixed Models
$51.99
Genuine OEM YRDD6 Battery For Dell Inspiron 3493 3582 3583 3584 7586 3793 42Wh
$23.59
OEM 68Wh 3HWPP Battery For Dell Latitude 5401 5501 5410 5510 E5411 E5511
$28.99
OEM Genuine 62WH 6MT4T Battery For Dell Latitude E5470 E5570 6MT4T 07V69Y 7V69Y
$36.66