linux-kernel - Re: long-term regression

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Message-Id: <20070627091903.635e9388.randy.dunlap@oracle.com>
Date:	Wed, 27 Jun 2007 09:19:03 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	david@...g.hm
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	linux-usb-devel@...ts.sourceforge.net, linux-acpi@...r.kernel.org
Subject: Re: long-term regression

[adding linux-acpi@...r.kernel.org]

On Wed, 27 Jun 2007 00:38:17 -0700 (PDT) david@...g.hm wrote:

> On Tue, 26 Jun 2007, Randy Dunlap wrote:
> 
> > On Mon, 25 Jun 2007 15:56:17 -0700 (PDT) david@...g.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@...cle.com>
> >>> To: david@...g.hm
> >>> Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org,
> >>>     linux-usb-devel@...ts.sourceforge.net
> >>> Subject: Re: long-term regression
> >>>
> >>> david@...g.hm wrote:
> >>>>  On Thu, 21 Jun 2007, Randy Dunlap wrote:
> >>>>
> >>>>>  Date: Thu, 21 Jun 2007 08:36:59 -0700
> >>>>>  From: Randy Dunlap <randy.dunlap@...cle.com>
> >>>>>  To: Andrew Morton <akpm@...ux-foundation.org>
> >>>>>  Cc: david@...g.hm, linux-kernel@...r.kernel.org,
> >>>>>      linux-usb-devel@...ts.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@...g.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?

---
~Randy
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