[Bug 13350] [Breezy] hangs at boot

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------- Additional Comments From vincent.trouilliez at modulonet.fr  2005-09-26 04:58 UTC -------
> No, I mean, during the hang what is the current line you see on the screen? Or
is there none?

Ah okay. This is what happens:

1) press enter in the BRUB menu
2) prints "Uncompressing Linux...  Ok, booting the kernel
3) hangs there for 20 seconds
4) NIC drivers prints the usual messages :

[4294669.162000] 8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004)
[4294669.162000] 8139cp: pci dev 0000:01:01.0 (id 10ec:8139 rev 10) is not an
8139C+ compatible chip
[4294669.162000] 8139cp: Try the "8139too" driver instead.
[4294669.163000] 8139too Fast Ethernet driver 0.9.27

5) usplash starts normally.

> Do you still have "quiet" in your /boot/grub/menu.lst? 

Yes, I don't know much about kernel/boot process/GRUb, so I never touch it...

> If so, remove it so we can see everything coming out.

Ah, good idea, that helped a lot ! I see what the problem is now ! Well, not
really, but I know it's not the NICs !

This is where the kernel hangs, not for 20 seconds, but almost :

[4294669.487000] ahc_pci:1:2:0: Host Adapter Bios disabled.  Using default SCSI
device parameters
[4294669.489000] scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
[4294669.489000]         <Adaptec 2902/04/10/15/20C/30C SCSI adapter>
[4294669.489000]         aic7850: Single Channel A, SCSI Id=7, 3/253 SCBs
[4294669.489000] 
[4294684.506000]   Vendor: AGFA      Model: SNAPSCAN 1236     Rev: 1.50
[4294684.506000]   Type:   Scanner                            ANSI SCSI revision: 02
[4294684.506000]  target0:0:0: Beginning Domain Validation
[4294684.534000]  target0:0:0: Ending Domain Validation

And this explains that !  This is my SCSCI controller card, which has always
caused Hotplug, in Warty and Hoary, to hang precisely for about 23 seconds.
Whereas now in Breezy, Hotplug is super fast (2 or 3 seconds), but in quiet mode
it looks as if the machine is hanging for 20 seconds before the boot seuqence
starts ! So the hangs is not new then. The fact the it appeared to be the NIC's
drivers is probably simply because it was the first program to happen to print
when not in quiet mode, so that was misleading !
So now the problem is now, why does it hang nearly 20s on the SCSI card ? I
tried disconnecting the scanner, but even without any SCSI devices on the bus,
it still hangs for the same amount of time.
Also, it's strange that in "quiet" mode, I got to see the NIC driver messages,
but not the SCSI ones, shouldn't all messages be kept from printing, when in
quiet mode, until usplash displays the background picture ?

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