On Fri, 06 Aug 2010 14:02:11 +0100 Barry Samuels <ba...@beenthere.mail1.co.uk> wrote:
> Desktop and Laptop both have Debian Testing installed and up to date; both > with self-compiled kernel 2.6.32. > > I have a CurrentCost electricity usage monitor which is normally connected > to my desktop via USB and is working properly. When the unit is plugged in > I get a number of lines in syslog like so: > > kernel: usb 4-1: new full speed USB device using uhci_hcd and address 12 > kernel: pl2303 4-1:1.0: pl2303 converter detected > kernel: usb 4-1: pl2303 converter now attached to ttyUSB0 > > I am trying to get this same device working on my laptop but this time I > see the following in syslog: > > kernel: pl2303: Prolific PL2303 USB to serial adaptor driver > > but nothing else i.e no 'attached to ttyUSB0'. Looking in /dev there is no > ttyUSBn > > Whereas the desktop also loads the pl2303 and usbserial kernel modules > automatically when the device is connected the laptop does not and when I > load them manually I get only the above mentioned line in syslog. > > When the USB device is plugged in there is apparently no reaction from the > operating system on the laptop when watching /var/syslog using 'tail'. > That, I think, is the main problem. Other USB devices on the laptop do > work. > > Needless to say the software which monitors the device won't connect. > > Any suggestions please? Are you using the *exact* same kernel on both systems? Do you have the same problem with a Debian stock kernel? [The first step when debugging problems with self-compiled kernels is always to check if the problem exists with stock kernels, or only with one's own.[ Celejar -- foffl.sourceforge.net - Feeds OFFLine, an offline RSS/Atom aggregator mailmin.sourceforge.net - remote access via secure (OpenPGP) email ssuds.sourceforge.net - A Simple Sudoku Solver and Generator -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100809124128.97422a5e.cele...@gmail.com
