USB Chip reader used to work with 2.4.26
 

Hi,

Ever since I upgraded my kernel to 2.6.12 I can't read from my chip reader! I'm told that the 'special device sda1 doesn't exist' when it did "exist" on 2.4.26.

Could this be that I installed the wrong chip reader modules?

What does you "dmesg" says? Is the chip reader assigned to "sda1"? Or is the driver find it? Guessing devices will get you nowhere, make sure "sda1" is the correct one before trying to mount.

dmesg will tell me that? Ok..... I naturaly assumed since sda1 wworked on 2.4 that ti would work on 2.6. Alright I'll check
thanks

Well here's the results:
dmesg has nothing related to my chip reader,
I don't know how to assign the chip reader to sda1 and I don't know if it is.
How will I know if the drver finds it?

Thanks again.

You can't "assign" your chip reader to sda1 or to any device, it's the driver job to do so.
What are the last few lines of "dmesg" when you plug it? There should be lines saying something like "New usb device found at X" at the very least, otherwise there is something wrong about your kernel (no usb support?).
Here is a sample, from my system, this is what I get when I plug my flash drive :

If you see something like the following, then it is possible that the usb-storage driver is missing from your system or it is not activated yet :
In that case, try to "modprobe usb-storage" then see dmesg again.

You will also need to load sd_mod.

If you compiled 2.6.12 yourself, you probably picked USB Block Device or the ub module. The ub module is experimental and there is warnings that it will break usb storage. I enabled it as a I test and the warnining is correct that it breaks or it does not find all partitions on the USB disk. I suggest re-compiling the kernel, but with out this device.

Nope dmesg shows nothing.
modprobe modprobe usb-storage as root says FATAL: Module usb_storage not found.

Yes I thikn compiled USB Block Device into the kernel. Ok. I'll recompile the kernel without the device and tell you what happens.

Thanks a lot.

If you see NOTHING about usb, then the USB support is most likely missing from your kernel... Take a look at your options and make sure you haven't forgot something.

Could you wait for a little bit? I'm having trouble recompiling my kernel...

If your chip reader is a multi slot type (sd card, memory stick,...) maybe that you should enable the CONFIG_SCSI_MULTI_LUN=y in the scsi options.

Hope this is helpful.

Yes I have a multi slot chip reader. I'll include the CONFIG_SCSI_MULTI_LUN=y.

Ok I recompiled my kernel without USB Block Device or the ub module.
I also included CONFIG_SCSI_MULTI_LUN=y but still nothing in the output from dmesg.

I rebooted into 2.4 and got output from dmesg.... arrgh!!!

Ok. I got it working but It gives me error messages: http://www.linuxquestions.org/questi...hreadid=375097