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On 12 Nov, William Kenworthy wrote: |
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> On Thu, 2009-11-12 at 12:39 +0100, Helmut Jarausch wrote: |
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>> On 12 Nov, Alan McKinnon wrote: |
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>> > On Thursday 12 November 2009 13:05:29 Helmut Jarausch wrote: |
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>> >> Sorry if this is FAQ but I couldn't find the answer. |
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>> >> E.g. I have to versions of dev-libs/libusb installed, one in slot 0 and |
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>> >> the other one in slot 1. |
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>> >> For testing purposes I'd like to make the slot-0 version 'effective'. |
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>> >> How can I do that (other than unmerging the slot-1 version) |
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>> >> ASAIK, eselect cannot do this. |
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>> > |
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>> > |
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>> > Why do you want to do that? The package contains only libs, and apps that link |
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>> > to it already know which on they want. |
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>> > |
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>> > I suppose you could tinker with LDPATH but I think there's a basic |
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>> > misunderstanding of what the package is |
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>> > |
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>> |
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>> The reason is the following bug. |
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>> To use an old printer (no USB connector) I've purchased |
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>> a USB-to-parallel adapater (since some software like VirtualBox |
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>> cannot handle the parallel port). |
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>> |
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>> [my bug report 291596] : |
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>> |
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>> When I use 'add printer' from the cups web interface this "printer" isn't |
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>> shown and I get the following entry in /var/log/messages: |
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>> Nov 2 16:19:41 numa-be kernel: usb[9750]: segfault at 7fff14c30000 ip |
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>> 00007f8d3a50dc0b sp 00007fff14c2ced8 error 4 in |
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>> libc-2.10.1.so[7f8d3a490000+14d000] |
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>> |
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>> I have started cupsd in foreground but it doesn't show any errors. |
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>> Where does this error come from? |
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>> |
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>> ----- |
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>> |
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>> Robin Johnson replied |
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>> Did this work on: |
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>> - a previous kernel? |
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>> - the libusb-0* series? |
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>> - ever (what changed since then)? |
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>> |
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>> Therefore I'd like to test with the older libusb. |
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>> |
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>> Many thanks for your help, |
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>> Helmut. |
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>> |
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> |
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> Just a thought as I have not been following the thread - why not use a |
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> network printer? If its gentoo in a virtualbox on a windows machine you |
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> can share the windows printer and use cups on the linux side to redirect |
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> to it via samba. No need to worry about parallel ports or physical |
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> printer connections in the vm, and the original host can continue to use |
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> the printer on the parallel port. |
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> |
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> http://www.gentoo.org/doc/en/printing-howto.xml |
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> |
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There are 2 reasons. |
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First, for my PC at home, I don't have a local network and my old |
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printer cannot be connected to a network. |
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Here, at our institute, we have some small (old) printers within a small |
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office (in addition to copiers connected by TCP/IP) |
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Helmut. |
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-- |
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Helmut Jarausch |
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|
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Lehrstuhl fuer Numerische Mathematik |
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RWTH - Aachen University |
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D 52056 Aachen, Germany |
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