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Re: cdrom problem
--- Tom Droege <tdroege2@earthlink.net> wrote:
> I notice that from time to time my cdrom drives get in a mode where
> they just
> read 12 files. A ls /mnt/cdrom gives 12 file names when there are
> many more
> on the cd. A reboot of the system cures this.
>
> Is this a known problem? Mandrake Linux 10.0
>
> OK, now that I am on to it, it is not much of a problem. However, it
> greatly
> added to my disk confusion over the last several days. Possibly
> there is a
> way to fix it wihout a reboot.
This is really odd, but then bugs are always that way. I can't think
of any user error tht could explain it, even so it's hard to
believe there is a bug in something so well tested. ut if a re-boot
fixes it then it's a bug some place....
If you say _only_ a reboot fixes the problem, and a power cycle is not
required then it is likey some odd problem with a driver. (If a power
cycle is required then I supect firmware glitch.)
The trouble is that the "driver" is really a stack of drivers and you
don't know which it really is.
Maybe you don't care? You can unload and re-load the
drivers. Most of the time that is really why a re-boot
fixees it, because it force a reload of some driver.
As root try the command "lsmod". Don't worry it's harmless.
It will just list out all the loadable drivers you currently have.
There are related commands, "rmmod" to remove a driver and "inmod
to "insert" or load a driver. They all have man pages.
Experiment on a system that does not have importent data on it
You can put the required rmmon/insmod commands in a script and
it will take like 1/10th second to run. Much fasterthen a re-boot.
If you do get the script down to minimum size and can then prove
where the problem is please do tell the guy who maintains that
driver that you have a reproducable problem.
>
> Tom Droege
>
>
=====
Chris Albertson
Home: 310-376-1029 chrisalbertson90278@yahoo.com
Cell: 310-990-7550
Office: 310-336-5189 Christopher.J.Albertson@aero.org
KG6OMK
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