Re: Problem with the serial port in Fedora Core 6

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On Sat, 2006-11-11 at 17:13 -0500, Gene Heskett wrote:
> On Saturday 11 November 2006 12:30, Craig White wrote:
> >On Sat, 2006-11-11 at 10:45 -0500, Gene Heskett wrote:
> >> >> Anyway, here is the grub.conf as it exists now, whats wrong with
> >> >> it? ----------------
> >> >> # 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/VolGroup00/LogVol00
> >> >> #          initrd /initrd-version.img
> >> >> #boot=/dev/hda
> >> >> default=0
> >> >> timeout=7
> >> >> splashimage=(hd0,0)/grub/splash.xpm.gz
> >> >> # hiddenmenu
> >> >> # 0
> >> >> title Fedora Core (2.6.18-1.2798.fc6xen)
> >> >> 	root (hd0,0)
> >> >> 	kernel /xen.gz-2.6.18-1.2798.fc6
> >> >> 	module /vmlinuz-2.6.18-1.2798.fc6xen ro
> >> >> root=/dev/VolGroup00/LogVol00 module
> >> >> /initrd-2.6.18-1.2798.fc6xen.img
> >> >>
> >> >> # 1
> >> >> title Fedora Core 6 (2.6.19-rc5)
> >> >> 	root(hd0,0)
> >> >> 	kernel /vmlinuz-2.6.19-rc5 ro root=/dev/VolGroup00/LogVol00 rhgb
> >> >> quiet module /initrd-2.6.19-rc5.img
> >> >>
> >> >> # 2
> >> >> title Fedora Core 2 Menu
> >> >> 	rootnoverify (hd1,0)
> >> >> 	chainloader +1
> >> >> # 3
> >> >> title DOS
> >> >>         rootnoverify (hd0,1)
> >> >>         chainloader +1
> >> >>
> >> >> --------------
> >> >> # 1 will unpack, and boot to a missing console message, locked up,
> >> >> so somethings still missing even after I added the LVM stuffs.  It
> >> >> works fine for FC2, but without the LVM stuff that I built into
> >> >> this version after getting a very early crash because it wasn't
> >> >> there.  And believe it or not, the last 'DOS' entry does display in
> >> >> the boot menu.
> >> >
> >> >----
> >> >I can't tell that anything is wrong with your grub.conf other than
> >> > I've never seen the labels that you have added in grub and wonder
> >> > about them. I also wonder if the grub conf that you think is loading
> >> > is the one that is actually loading since when you add a second disk
> >> > to the equation, BIOS doesn't always see disk (hd0) or (hd1) as you
> >> > think it will.
> >>
> >> The bios see's them just fine, all 4 of them.  The FC6 install is on a
> >> 160GB as hd0, the FC2 install is on a 120GB as hd1.  A new lightscribe
> >> dual layer burner is hd2, and hd3 is a 200GB that amanda yses 180GB of
> >> for vtapes, FC2's /var is on hd3, and FC2's swap is on hd3. And if you
> >> are referring to the # 0 etc labels, I've been using them since grub
> >> was new, what 5 years ago?  There are in fact, 26 such entries in my
> >> FC2 grub.conf, and they all display correctly.  Mmm, it just occured
> >> to me that maybe its expecting a pair of () around the word 'menu', or
> >> maybe a kernel version?  But heck, its (the title line) supposedly
> >> just a label to display to the user AFAIK.
> >
> >----
> >I have never had blank lines nor the extra lines like '# 1' in my
> >grub.conf but I have no idea what impact that they might have.
> 
> Neither blank lines nor the # comments have ever effected it before.
> 
> >I would guess that the reason #1 doesn't fully boot is not a grub issue
> >but rather an issue with your initrd that accompanies the kernel or that
> >LVM isn't compiled into the kernel but rather is a module that can't
> >load from a LVN partition.
> >
> >Again, I would suggest that you install the regular (non-xen) kernel
> >from fc6 and boot from that to see what happens - especially with regard
> >to the serial ports.
> >
> >Craig
> 
> And that worked, I now have the usual serial discovery stanza's in my 
> dmesg, and heyu is happy.
> 
> So its the xen, whatever that is, thats screwing it up. I tried to 
> bugzilla the missing ttyS's, but bugzilla didn't like my password.  So I 
> sent an email to the link provided and now have a reject message from 
> bugzilla.  Post by non-member.
----
there is an option for people who forget their passwords to have them
e-mailed to them.

There also is already a bugzilla entry regarding the fc5/6 xen kernel
and serial ports which appears to be exactly your issue and a suggestion
by Bill Nottingham for motherboards that aren't entirely cooperative
with (not providing a pnp BIOS).

Evidently your difficulties with bugzilla include searching...

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=204825

Craig


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