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Re: Bug#286515: hotplug: Iiyama USB monitor hub unrecognized until re-plugged



> This looks like a kernel problem to me. If your devices do not appear in
> the lsusb output, then there is nothing hotplug can do about it.

Thanks. Indeed, the same upgrade pulled in the 2.4.27-1-686 update.
Would you like me to attempt installing an earlier 2.4 version to check if it 
is indeed the case? which one?

> BTW, you probably want to run a 2.6 kernel.

I have just spent a couple of hours trying to do it in a way that would allow 
me to select between the 2 kernels, and the results are as follows.

1) Just attempting to install it out of the box and booting resulted in a 
panic. Here are the messages it says before the panic:
pivot_root: no such file or directory
/sbin/init: 426: cannot open dev/console: no such file
Kernel panic: Attempted to kill init!

2) the reason turns out that my IDE drive is a SATA controller
0000:00:1f.2 IDE interface: Intel Corp. 82801EB (ICH5) Serial ATA 150 Storage 
Controller (rev 02)
which is treated differently by 2.6 as opposed to 2.4, so that the drive 
becomes sda as opposed hda. This requires manual setting of the kernel 
options in /etc/grub/menu.lst to select the appropriate root device,
but I have not figured a clean way what to do with /etc/fstab !

Here's what I have there at 2.4:
/dev/hda1       /       ext3    defaults,errors=remount-ro      0 1
/dev/hda4       /LOCAL  ext3    defaults        0 2
/dev/hda5       /boot   ext3    defaults        0 2
/dev/hda9       /home   ext3    defaults        0 2
/dev/hda8       /tmp    ext3    defaults        0 2
/dev/hda6       /usr    ext3    defaults        0 2
/dev/hda7       /var    ext3    defaults        0 2
/dev/hda2       none    swap    sw      0 0
/dev/fd0        /floppy auto    
rw,user,noauto,umask=077,shortname=winnt,showexec=no    0 0
/dev/cdrom      /cdrom  auto    ro,user,noauto  0 0
proc    /proc   proc    defaults        0 0
/dev/sda1       /memory_card    vfat    
rw,user,noauto,umask=077,shortname=winnt,showexec=no 0 0
/dev/sda2       /keycard        ext2    rw,user,noauto,nosuid 0 0
/dev/sdb1       /olymp          vfat    
rw,user,noauto,noexec,umask=022,shortname=winnt,showexec=no 0 0

3) When I solve that, I will have to solve another issue which is the CD-R. 
Currently, under 2.4, I am using scsi emulation for both the IDE CD-ROM and 
the CD-RW device:

/proc/cmdline: ... hdc=ide-scsi hdd=ide-scsi

and in /etc/modules:
sg
ide-scsi

Also I have the corresponding links established from /dev/cdrom and /dev/cdrw

As far as I understand, I have to remove all this under 2.6, so there's quite 
a bit of work left.

Any link on setting up the 2 kernels in parallel on the same machines are 
appreciated (this is a family desktop machine and I am unsure I am willing to 
make the wife and the kids suffer a kernel I haven't tried out here myself 
yet).

Kind regards,
v.



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