keeping users separate..

my suse 9.3 pro (security updated) box has two users 'dd' and
'test' (both me)..

from my (incomplete and novice) understanding of *nix any thing i do
as 'dd' should NOT affect 'test' in any way--right?

but it does, example:

i went to bed last night and had (accidently) left an instance of
"real player" streaming CSPAN to my screen (switched to muted)..

powered up the monitor this morning and saw an error about streaming
blah blah...clicked it off, shutdown the real player and the firefox
which had launched it..

later, i noticed that i had no system sounds...shut down all open
programs, logged out and then back in as 'dd'....still no sound...

logged out and back in as 'test' and the opening sounds worked
fine...logged out and back into 'dd' and was greeted with sound..

why? so much for completely separate, right?

and, i had earlier noted that i can reset the volume level as 'test'
and when i get back to 'dd' the volume level is also changed there..

dd
does that mean if i had 20 users they could fight each other with
their volume controls??

OH, 'dd' always uses gnome and 'test' always KDE..(if that might
affect it...but if it does someone needs to ask: does KDE trump a
user in gnome....and if so, why?)

DenverD adjusted his/her tinfoil beanie to post:


> dd
> does that mean if i had 20 users they could fight each other with
> their volume controls??

This all depends on what permissions you have given to the users, in
normal/default usage ( IIRC ) the first to logon has exclusive control
over the mixer, but if that person logs out and another logs in the
control is passed to that user.

Another thing to think of is that you cannot have 20 users using the
same *machine* at the same time *physically* ( unless you have loads of
USB keyboards, mice and montors ) so in practice they would be logging
in from a remote station where they would have individual control over
their own hardware on that remote machine.

>
> OH, 'dd' always uses gnome and 'test' always KDE..(if that might
> affect it...but if it does someone needs to ask: does KDE trump a
> user in gnome....and if so, why?)

KDE and Gnome use different sound servers and maybe just the fact that
you started a new session with a different user and a different wm/dm
was enough to reset the KDE sound server.

However I will point out that the sound system under SuSE/Linux is going
through a lot of changes at the moment ( on the KDE side ) moving from
arts to kde sound system and other stuff and is still not 100% stable,
it is getting there and is a vast improvement from earlier versions, at
least on 10 I can use the system sounds here, on 9.3 64bit the artsd
would take a powder on the slightest thing, however it does mean that a
lot of my games are borked at the moment but I have not had chance to
try and fix them yet, doom3 fixes have been posted but I cannot get the
sound correct, maybe just my hardware but all the sounds are as if they
are robots :-)

HTH

--
Mark
Twixt hill and high water
N. Wales, UK
Novell Support Forums SysOp

> at least on 10 I can use the system sounds here, on 9.3 64bit the
> artsd would take a powder on the slightest thing

actually, i guess i should not complain..
the last machine i had with always good sound was an old 33mhz
running win3.1, then in '95 i did a REAL upgrade to OS/2 Warp v 3..

after 8 years of Warp "dying" i jumped to RH 7.? with no sound...then
got a AMD64, loaded SUSE 9.2 with no sound...and, when i laid 9.3
over it (not so long ago) suddenly i had sound..

then when it got flaky i bellyached..

sorry!

DenverD

baskitcaise said the following on 10/11/05 06:26:
> DenverD adjusted his/her tinfoil beanie to post:

You might want to revise your reply line.
http://people.csail.mit.edu/rahimi/helmet/

--
__
_________ ____ _____/ /__
/ ___/ __ \/ __ \/ ___/ //_/
_ (__ ) / / / /_/ / / / ,<
(_)____/_/ /_/\____/_/ /_/|_|

DenverD wrote:

> why? so much for completely separate, right?

Uhhuh. Right? Not exactly. Some resources are unique. And if the first users
uses them, the next one cannot. If processes of the first user hang beyond
logging out, there is trouble for the next user.

Also, not all code is executed as the user.

--
Ruurd

Snorkelson MacBurp adjusted his/her tinfoil beanie to post:


> You might want to revise your reply line.
> http://people.csail.mit.edu/rahimi/helmet/
>

Thats another one for the bookmarks, thanks :-)

--
Mark
Twixt hill and high water
N. Wales, UK
Novell Support Forums SysOp

R.F. Pels wrote:
> DenverD wrote:
>
>> why? so much for completely separate, right?
>
> Uhhuh. Right? Not exactly. Some resources are unique. And if the first users
> uses them, the next one cannot. If processes of the first user hang beyond
> logging out, there is trouble for the next user.
>
> Also, not all code is executed as the user.
>

It strikes me the OP should perform the following: log in as seperate
users in two windows; empty a double barrel shotgun into the
motherboard; observe results.

This would seem to accomplish two things: 1) a valuable lesson about the
sharing of hardware resources. 2) Stop (at least for awhile) the
whining here.

8-)

Snorkelson MacBurp wrote:

> baskitcaise said the following on 10/11/05 06:26:
>> DenverD adjusted his/her tinfoil beanie to post:
>
> You might want to revise your reply line.
> http://people.csail.mit.edu/rahimi/helmet/
>

BE CAREFUL, it has been determined that that Rahimi MIT researcher
guy was taken over by "them"....and he fudged his research so it
would say that tin foil hats are useless....."they" did that so we
would take off our hats!!

careful out there..

btw, it is also possible that Ali was actually testing aluminum foil
hats...you MUST make sure your is 100% pure tin..

get yours at http://www.100PercentPureTinFoilHats.com

tell'em DenverD sent you and you get 15% off..

DenverD
A Texan in Denmark