Sorry for the long delay. Real Life (TM) interfered with my investigations,
and also a point you mentioned brought up a possible complication which I'll
mention at the end...
On Friday 01 November 2002 05:05, Ray Olszewski wrote:
> At 02:29 AM 11/1/02 +1300, cr wrote:
> >[...]
> >
> >I don't have enough info about your setup (kernel details,
> >
> > > mostly) to know why you are getting ghe "unresolved symbol" errors, but
> > > the usual reasons are kernel-version mismatch or missing dependency.
> > > See what effect "modprobe sr_mod" has.
> >
> >Same list of four "unresolved symbol" errors, then
> >"insmod /lib/modules/2.4.7-10/kernel/drivers/scsi/sr_mod.o failed"
> >
> >The module's there in /lib/.... , I looked.
>
> Yes, of course it is. The messages you are seeing say that some external
> function calls *in* the module cannot be resolved.
>
> Usually this occurs because some other module that the one you are trying
> to load provides the missing functionality; modprobe is supposed to handle
> this for you (by consulting modules.dep and loading anything that is
> needed). After the unsuccessful modprobe, what does "lsmod" tell you about
> what is loaded? Is the module scsi_mod loaded, and what does the output say
> about what other modules are using it (the stuff in [] after the size)?
OK. /sbin/lsmod gives:
Module Size Used by
esssolo1 25376 0 (autoclean)
gameport 1840 0 (autoclean) [esssolo1]
soundcore 4208 4 (autoclean) [esssolo1]
binfmt_misc 6064 1
autofs 11232 0 (autoclean) (unused)
ipchains 36000 0
nls_iso8859-1 2800 1 (autoclean)
nls_cp437 4320 1 (autoclean)
umsdos 24832 1 (autoclean)
msdos 5104 0 (autoclean) [umsdos]
fat 31392 0 (autoclean) [umsdos msdos]
usb-ohci 17936 0 (unused)
usbcore 49792 1 [usb-ohci]
ext3 61936 2
jbd 38976 2 [ext3]
Doing /sbin/modprobe sr_mod brings a string of 'unresolved symbol' messages
and "insmod sr_mod failed", and lsmod indicates no change.
Trying to run X-CD-Roast gives an error message 'Failed to scan SCSI-bus'
*but* lsmod indicates it's loaded a couple of modules:
Module Size Used by
sg 27488 0 (autoclean) (unused)
scsi_mod 92208 1 (autoclean) [sg]
esssolo1 25376 0 (autoclean)
..
..
Then (but not before), /sbin/insmod ide-scsi works, after which X-CD-Roast
works.
However, trying to mount /mnt/cdrom still brings up a 'wrong fs type'
message.
>
> The other reason this occurs is because the module was compiled for a
> different kernel than the one loaded. Did you compile (or otherwise change)
> your kernel? If so, did you also compile (or otherwise change) modules,
> including sr_mod specifically?
No, I'm using the standard RedHat 7.2 distribution. I'm not sufficiently
confident to do alarming things to the kernel. Or modules. ;)
It looks maybe like sr_mod is the cause of the problem, since I can't seem to
make it load.
Referring back to a previous message, you said
> If you do "ls -l /dev/scd0", the result should be approximately this (this
> one is from my workstation):
>
>� � � � �brw-rw---- � �1 root � � cdrom � � 11, � 0 Jun 13 �2001 /dev/scd0
My system gives
brw-rw---- 1 root disk 11, 0 Aug 31 2001 scd0
I'm not sure if the 'disk' indicates a source of problems?
> >Is it possible to 'switch off' modules once installed? It occurs to me
> > I could switch off ide-scsi and sg and see if I can get my IDE CD-ROM
> > reading back.
>
> Well, you can remove modules with "rmmod". I don't know how that interacts
> with the lilo.conf settings that tell the kernel to use ide-scsi emulation
> for an IDE device.
Actually it's grub.conf, since I'm booting with Grub - or trying to.
/boot/grub/grub.conf says
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/hda2
# initrd /initrd-version.img
#boot=/dev/hda
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.7-10)
root (hd0,0)
kernel /vmlinuz-2.4.7-10 ro root=/dev/hda2 hdb=ide-scsi
initrd /initrd-2.4.7-10.img
HOWEVER, I'm not booting successfully off the hard drive, when I start up it
says 'GRUB' and hangs. (and the previous install where I was using lilo did
the same). So I'm booting off the floppy made at install time. I presume
that reads grub.conf, but I'm not sure of that.
(Trying to fix this was next on my To Do list after the CD-ROM drive).
I did wonder if the booting problem had any relevance to the cd-rom, but
everything else on the system seems to work OK. I hope it isn't something
vitally relevant I should have mentioned.
Chris
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs
