Arch Linux

dw

Member

From: Vienna, Austria

Registered: 2006-11-25

Posts: 160

Usb stopped working with 2.6.20->2

Hi everyone.

I connect to the internet through an usb-cable modem which used to work perfectly until kernel 2.6.20-2. However, yesterday I upgraded to the latest kernel which resulted in all usb-jacks are no longer working. Especially one can seen, that the usb cable modem is registered when i plug it into any usb-jack and it is un-registered shortly after. I _think_ that this is due to the fact, that the modules ehci and ohci are sharing one interrupt, as cat /proc/interrupts suggests.

My questions:
#1: Is this a known bug? Will this be fixed? Should I create a bug-entry?
#2: How can I revert back to a kernel version from which I know that it is working for me?

Thanks for your help guys (and girls)

saintshakajin

Member

Registered: 2005-04-13

Posts: 32

Re: Usb stopped working with 2.6.20->2

I don't know for the #1 but for #2, look at your /var/cache/pacman/pkg, maybe, the previous version is still there...
You can also try with a kernel-beyond or something like that

dw

Member

From: Vienna, Austria

Registered: 2006-11-25

Posts: 160

Re: Usb stopped working with 2.6.20->2

I don't know for the #1 but for #2, look at your /var/cache/pacman/pkg, maybe, the previous version is still there...
You can also try with a kernel-beyond or something like that

Hi. Thanks a lot for your answer.

I'll try looking at the cache at home. This was helpful.

dw

Member

From: Vienna, Austria

Registered: 2006-11-25

Posts: 160

Re: Usb stopped working with 2.6.20->2

Ok, I tracked down the problem to the cdc_ether module, which is needed for the usb-cable modem.

It seems to me that this module doesn't work, since it registers and always unregisters shortly after. lsusb shows that the cable modem is correctly identified.

Anyway, I "solved" this problem for me by "by-passing" the usb-cable modem with a router and connecting to the internet either with an ethernet-cable or via wlan.