[Fwd: Re: long-term regression - Parallel Port broken?]

[Thomas Renninger <trenn@suse.de>]

Hi David,

Could this problem have to do with this one:
https://bugzilla.novell.com/show_bug.cgi?id=180390
Tell me if you have problems accessing the bug, it should be public.
Unfortunately the ongoing of the bug stopped a bit for various reasons.

The first comments pointed in the wrong direction, it's getting
interesting when Vojtech joined the conversation and things pointed to
acpi, possibly acpipnp.

First a collection of acpidump outputs of affected machines would be
great, hopefully other reporters start helping again...

If it is the same bug, it's interesting that 2.6.18-rc3 worked for you
(vanilla or gentoo?). Because SLE[DS]10 is 2.6.16 based, we could have
backported the bug and that might help finding it?

Thanks,

   Thomas

PS: I stripped the CC list, things seem to point to acpi...

PSS: Has there already been a bug at bugzilla.kernel.org opened where
dmesg, acpidump and other info can be reviewed? If not this should be
done.

On Wed, 2007-06-27 at 09:19 -0700, Randy Dunlap wrote:
> [adding linux-acpi@vger.kernel.org]
> 
> On Wed, 27 Jun 2007 00:38:17 -0700 (PDT) david@lang.hm wrote:
> 
> > On Tue, 26 Jun 2007, Randy Dunlap wrote:
> > 
> > > On Mon, 25 Jun 2007 15:56:17 -0700 (PDT) david@lang.hm wrote:
> > >
> > >> due to the size the files are posted at http://linux.lang.hm/linux
> > >>
> > >> let me know what else I can send to help.
> > >>
> > >> David Lang
> > >
> > >
> > > I suggest that you test 2.6.22-rcN using one or both of these
> > > boot options:
> > >
> > > noisapnp
> > > pnpacpi=off
> > >
> > > Somewhere between 2.6.18 and 2.6.22-development, the ACPI config
> > > symbol also starting enabling (selecting) PNP.  That's one of many
> > > differences....
> > 
> > with the 2.6.22-rc4 kernel that I was useing earlier, adding these two 
> > options clears up the problem. Thanks.
> > 
> > should I test the two individually? or just plan on useing both from now 
> > on?
> 
> Yes, please test them individually.  I expect that just one of them
> will suffice, but I don't know which one.
> 
> > I normally disable PnP (both ISA and PCI), should I leave it enabled with 
> > the newer kernels and this motherboard?
> 
> ACPI recently began enabling (selecting) PNP for you...
> 
> How do you normally disable PCI PNP?
> 
> What kind of hardware is this?  Please show us lspci output.
> 
> > > I would also disable CONFIG_USB_USS720, at least for testing.
> > 
> > for ease of testing (I got time to reboot the box around midnight) I used 
> > the same config as before, so this is still on.
> > 
> > David Lang
> > 
> > >
> > >> On Mon, 25 Jun 2007, Randy Dunlap wrote:
> > >>
> > >>> Date: Mon, 25 Jun 2007 15:40:28 -0700
> > >>> From: Randy Dunlap <randy.dunlap@oracle.com>
> > >>> To: david@lang.hm
> > >>> Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
> > >>>     linux-usb-devel@lists.sourceforge.net
> > >>> Subject: Re: long-term regression
> > >>>
> > >>> david@lang.hm wrote:
> > >>>>  On Thu, 21 Jun 2007, Randy Dunlap wrote:
> > >>>>
> > >>>>>  Date: Thu, 21 Jun 2007 08:36:59 -0700
> > >>>>>  From: Randy Dunlap <randy.dunlap@oracle.com>
> > >>>>>  To: Andrew Morton <akpm@linux-foundation.org>
> > >>>>>  Cc: david@lang.hm, linux-kernel@vger.kernel.org,
> > >>>>>      linux-usb-devel@lists.sourceforge.net
> > >>>>>  Subject: Re: long-term regression
> > >>>>>
> > >>>>>  On Thu, 21 Jun 2007 05:28:07 -0700 Andrew Morton wrote:
> > >>>>>
> > >>>>>>>  On Sun, 17 Jun 2007 10:57:55 -0700 (PDT) david@lang.hm wrote:
> > >>>>>>>  I haven't had time to bisect this, but I'm having a problem on a
> > >>>>>>>  AMD64
> > >>>>>>>  gentoo system where the printer doesn't work with recent kernels.
> > >>>>>>>
> > >>>>>>>  2.6.18-rc3 worked
> > >>>>>>>  2.6.21.1 doesn't
> > >>>>>>>  2.6.22-rc4 doesn't
> > >>>>>>>
> > >>>>>>>  unfortunantly the system is gooted on 2.6.18 at the moment and I'm
> > >>>>>>>  out of
> > >>>>>>>  town so my ability to test is limited I can provide the 2.6.22-rc4
> > >>>>>>>  (attached) and 2.6.18-rc3 configs.
> > >>>>>>>
> > >>>>>>>  dmesg appears to show the port being detected, but writes to the
> > >>>>>>>  port
> > >>>>>>>  under newer kernels appear to complete, but no data gets to the
> > >>>>>>>  printer.
> > >>>>>>>
> > >>>>>>>  any suggestions other then doing the large bisect?
> > >>>>>>
> > >>>>>>  That would be good, thanks.  Please be sure to cc linux-usb-devel on
> > >>>>>>  the results.
> > >>>>>
> > >>>>>  OK, I'm curious about how someone deduced that this is a problem
> > >>>>>  with a USB printer vs. parallel port printer since the config file has:
> > >>>>>
> > >>>>>  CONFIG_PRINTER=y
> > >>>>>  CONFIG_USB_PRINTER=y
> > >>>>>
> > >>>>>  The kernel boot log should probably be posted also.
> > >>>>
> > >>>>  here is the dmesg from 2.6.22-rc4 and kern.log showing 2.6.22.-rc4 and
> > >>>>  2.6.180rc3
> > >>>>
> > >>>>  the printer not working is the parallel port.
> > >>>
> > >>> This email didn't show up on lkml or linux-usb-devel due to size limits (it
> > >>> was 900+ KB).
> > >>>
> > >>> David, please send your working 2.6.18 config file.
> > >>>
> > >>> Can you post the kernel log files on the web somewhere?
> 
> ---