linux-kernel - Re: parallel port problems with 2.6.21_rc5 and 2.6.21_rc6

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Date:	Sun, 06 May 2007 19:09:49 -0400
From:	Bill Davidsen <davidsen@....com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
CC:	Markus Koßmann <mkossmann_ml1@....de>,
	linux-kernel@...r.kernel.org
Subject: Re: parallel port problems with 2.6.21_rc5 and   2.6.21_rc6_git3-20070410174235

Randy Dunlap wrote:
> On Wed, 11 Apr 2007 20:40:23 +0200 Markus Koßmann wrote:
> 
>> When using either the unpatched  2.6.21_rc5   or SUSEs patched 
>> 2.6.21_rc6_git3-20070410174235 on a SUSE-10.2 x86_64 system the parallel port 
>> doesn't work right. If I "cat some_asciifile >/dev/lp0"  the output on my 
>> Epson Stylus Color 880 is unreadable.  "cat /dev/zero >/dev/lp0"  creates 
>> random characters on the paper. Printing using cups also doesn't work any 
>> more. 
>> Switching back to SUSEs  2.6.18.8-0.1 kernel fixes the problem.
>> Any Ideas, what might be broken here ? 
> 
> Nope, but I have the same problem.
> I'll dig into it some day, but it's not very high priority for me.
> 
At some point that could be a problem, I have a shared printer on 
parallel (and replacing a printer for 11x17 work isn't cheap), as well 
as one PL/IP requirement, which is embedded in industrial machinery not 
likely to be upgraded.

Non-critical in the sense that I'm sure I can run old kernels for a 
decade if needed, but hopefully something to be fixed. Since there's no 
regressions list any more, I guess we will all have to complain about 
problems individually. :-(

-- 
Bill Davidsen <davidsen@....com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot

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