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SubjectRe: Kernel thoughts of a Linux user
Tomas Carnecky wrote:

> Gerold J. Wucherpfennig wrote:
> > - Replace DRI with sth. slimmer and intoduce real kernel drivers
>
>> and introduce real kernel drivers which handel all the initialization
>> and interrupt handling (only minimal hardware abstraction). One goal
>> is to
>> remove X.org's PCI magic. Ultimately this shall give framebuffer and X
>> the same basis. This was summarized on kerneltrap.org.
>
>
> Is it possible to have two or more 'workstations' on one computer?

Yes - thats what the "ruby" kernel patch is all about. I have a computer
with two "workstations" at home. Compared to two computers, it
saves space, power, parts, and above all - administrative work. Only one
machine to upgrade, secure, configure.

> A 'workstation' is a monitor, keyboard, mouse etc. tied together and
> represents a place where someone can work.
> I know it's possible to do this using a Xserver (running two Xservers on
> different virtual consoles, each with its own
> configuration/keyboard/mouse/monitor), but I'd like to realise it more
> low-level, on the level of virtual terminals, so that each 'workstation'
> would have it's own 'Ctrl+F1', 'Ctrl+F2' etc.

Sure - ruby gives you that. X may need a patch in order to support
ctrl+F2... on the scond keyboard, as the second console uses vt numbers
from 17 to 32.

>
> Background:
> Today, you can buy video cards with two connectors for monitors, or even
> put two of those cards into one mainboard, making it possible to connect
> four monitors to one computer. A P4 HT enabled CPU would be enough for
> four office workers who edit text documents, unless they aren't playing
> games :) So you could cut costs by buying one set of Mainboard/CPU/RAM
> and then for every worker just a monitor/keyboard/mouse.
> Places like internet-cafes could profit, they usually have many same
> computers side by side, each with the same configuration, but on many no
> one is working, they just run and consume energy.

Yes, you can do that. The limit seems to be how many monitors you can
connect - there seems to be no practical limit to how many USB keyboards
& mice you can use. The lengt of wires might also be a problem
with more than four.

Helge Hafting
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