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Old 01-08-2004, 07:57 PM   #1
nmoog
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cdburner stopped loading on boot - scsi controller


I just recompiled my kernel, using the old config file (changing nothing else except processor type) and now my cd burner is not detected.

If I do a modprobe sym53c8xx (the scsi controller I think) then it is detected again...

My question is, does anyone know why it may have done this, and/or how can I get it to automatically load it again?!

Thank you!
 
Old 01-08-2004, 08:12 PM   #2
Tinkster
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Would help to know your distro, and from
which old version to which new version you
upgraded ...
Also would be nice to know whether you JUST
copied the .config over, or whether you also
ran make oldconfig afterwards.


Cheers,
Tink
 
Old 01-08-2004, 08:34 PM   #3
nmoog
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Its Slackware 9.1 - I did a make mrproper which seems to get rid of the .config file, then I ran make xconfig and from there I did "load config file" and loaded the config file from /boot/config-ide-2.4.22

I am just recompiling because its a new system, and I have a habit of losing one piece of functionality every time I recompile! This time I decided to not change anything and I STILL managed to lose something!

I have a scsi cd-burner and an ide cd/dvd rom player.

The only stuff relating to scsi in dmesg I could find is:

....
PCI: Found IRQ 11 for device 00:0c.0 <-scsi controller is on irq11
Limiting direct PCI/PCI transfers.
....
SCSI subsystem driver Revision: 1.00
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
....
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
....

Thats it. I dont know if any is relevant! I think some is for scsi emulation which I guess I dont need?

once i do modprobe sym53c8xx is get:

PCI: Enabling device 00:0c.0 (0014 -> 0017)
PCI: Found IRQ 11 for device 00:0c.0
sym53c8xx: at PCI bus 0, device 12, function 0
sym53c8xx: setting PCI_COMMAND_PARITY...(fix-up)
sym53c8xx: 53c810a detected
sym53c810a-0: rev 0x12 on pci bus 0 device 12 function 0 irq 11
sym53c810a-0: ID 7, Fast-10, Parity Checking
scsi1 : sym53c8xx-1.7.3c-20010512
Vendor: PLEXTOR Model: CD-R PX-W4220T Rev: 1.01
Type: CD-ROM ANSI SCSI revision: 02
Attached scsi CD-ROM sr0 at scsi1, channel 0, id 4, lun 0
sym53c810a-0-<4,*>: FAST-10 SCSI 10.0 MB/s (100.0 ns, offset 8)
sr0: scsi3-mmc drive: 20x/20x writer cd/rw xa/form2 cdda tray

And everything is happy!
 
Old 01-08-2004, 08:46 PM   #4
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Do
make mrproper
again.
Try the copying bit again, and run
make oldconfig
this time ... it will prompt you for a few
things that are different in the new kernel.

See if that helps.


Cheers,
Tink
 
Old 01-08-2004, 09:08 PM   #5
nmoog
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Im not sure what ya mean!

If I run make mrproper then make oldconfig then I get prompted for a few things, but they dont seem to relate to scsi stuff...

if I copy the config file I am using from /boot/config-2.4.22-09Jan to /usr/src/.config then run make oldconfig I dont get prompted at all.

Is that what you meant? Do you think I will have to recompile again to get it to work, even though modprobe-ing it gets loads it fine?

I also realised that the alsa drivers are not loading anymore. (wow, TWO things I killed!) Before I could run alsamixer etc, but now it gives errors...

alsamixer: function snd_ctl_open failed for default: No such device

Could this be related to the scsi thing?

Sorry for all the questions!
 
Old 01-08-2004, 11:57 PM   #6
nmoog
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I put the modprobe sym53c8xx into the etc/rc.d/rc.modules file and it now loads it on boot up... but - thats not the best way to do it is it? For the moment it aint broke I suppose!
 
  


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