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#1 2004-08-19 10:22:16

arDAWG
Member
From: Arkansas
Registered: 2004-08-19
Posts: 16

Permissions for Vidcard????

Hi, I'm new here, only my 2nd post, so I'll preface this w/ the fact that I'm testing the waters w/ Arch 6 as my 1st "get my hands dirty" distro. I've been learning Linux w/ Fedora Core 2 & Yoper & settled on FC2 w/ a custom kernel (I went thru the whole compliling thingy... wink). Now I wish to delve deeper into Linux w/ a distro that doesn't do it all for me, but I don't want to mess w/ the compile times of Gentoo...so Arch seemed perfect as my vehicle. So far I have gnome up & running, my sound & network are working fine & I switched to udev from devfsd. I've just added my "everyday" user account & found that the nvidia driver does not work unless I grant permissions to the vidcard in udev.permissons. This is what I've done:

# vc devices
vcs:root:users:0600
vcs[0-9]*:root:users:0600
vcsa:root:users:0600
vcsa[0-9]*:root:users:0600
vcc/*:root:users:0600

...however, I'm not sure about this line:

vc/[0-9]*:root:tty:0660

Also, not certain about symlinks either. The nvidia driver is working under my user account---b/c I can run glxgears & score in the 5 thousands vs. the hundreds---but I've not tested it w/ any games yet. I did find the script to add to rc.local to get the nvidia driver working w/ udev.  Just want to nail down the permissions. Am I anywhere close to being on the right track here???

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#2 2004-08-19 14:56:26

Xentac
Forum Fellow
From: Victoria, BC
Registered: 2003-01-17
Posts: 1,797
Website

Re: Permissions for Vidcard????

In this case 'vc' does not stand for Video Card, it stands for Virtual Console.


I have discovered that all of mans unhappiness derives from only one source, not being able to sit quietly in a room
- Blaise Pascal

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#3 2004-08-19 15:02:50

dp
Member
From: Zürich, Switzerland
Registered: 2003-05-27
Posts: 3,378
Website

Re: Permissions for Vidcard????

Xentac wrote:

In this case 'vc' does not stand for Video Card, it stands for Virtual Console.

i was confused with

 # vc devices 
 vcs:root:users:0600 
 vcs[0-9]*:root:users:0600 
 vcsa:root:users:0600 

vc devices? who ... .... uses vc for video card?

(as you may wonder, i'm a radeon-user; the only permissions i had to change is the fb0 to be root:users:0660)


The impossible missions are the only ones which succeed.

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#4 2004-08-20 06:07:49

arDAWG
Member
From: Arkansas
Registered: 2004-08-19
Posts: 16

Re: Permissions for Vidcard????

Thanks for the info. As I am a newb, (to Linux--know Winders upside down & inside out) was taking a stab in the dark w/ the "vc" setting. Anyhoo, I'm just amazed I've got this far...just followed the excellent guides @ the Wiki & all the vast resource of info here. Playing w/ XFCE4 right now...I used it a lot w/ FC2 & liked it quite a bit, once properly configured. Guess my change had nothing to do w/ the problems w/ the video, as the NVIDIA driver is working fine now. I did discover one anomoly of glxgears (u prolly already know about it)....if you run it w/ the gears displayed it results in this:
15526 frames in 5.0 seconds = 3105.200 FPS
18487 frames in 5.0 seconds = 3697.400 FPS
18507 frames in 5.0 seconds = 3701.400 FPS
18484 frames in 5.0 seconds = 3696.800 FPS
18481 frames in 5.0 seconds = 3696.200 FPS

Cover w/ the terminal or minumize & you get this:
70153 frames in 5.0 seconds = 14030.600 FPS
70244 frames in 5.0 seconds = 14048.800 FPS
70167 frames in 5.0 seconds = 14033.400 FPS
70305 frames in 5.0 seconds = 14061.000 FPS
69745 frames in 5.0 seconds = 13949.000 FPS

Easy way to turn my ti4200 into a 6800gt. big_smile

**edit** btw, fb0 = framebuffer???

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#5 2004-08-20 12:27:39

dp
Member
From: Zürich, Switzerland
Registered: 2003-05-27
Posts: 3,378
Website

Re: Permissions for Vidcard????

arDAWG wrote:

btw, fb0 = framebuffer???

yes


The impossible missions are the only ones which succeed.

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#6 2004-08-20 13:38:25

arDAWG
Member
From: Arkansas
Registered: 2004-08-19
Posts: 16

Re: Permissions for Vidcard????

Does virtual console = aterm/ xterm, etc & would I need to have permissions set to users for any particular reason???

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#7 2004-08-20 14:03:35

dp
Member
From: Zürich, Switzerland
Registered: 2003-05-27
Posts: 3,378
Website

Re: Permissions for Vidcard????

arDAWG wrote:

Does virtual console = aterm/ xterm, etc & would I need to have permissions set to users for any particular reason???

not sure, but aterm/xterm uses pts

the vc's are found under [CTRL]-[ALT]-[F{1,2,3,4,5,6}]


The impossible missions are the only ones which succeed.

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#8 2004-08-21 05:55:09

arDAWG
Member
From: Arkansas
Registered: 2004-08-19
Posts: 16

Re: Permissions for Vidcard????

k...tyvm for the info & setting me straight on my linux terminology. I've only been messing w/ linux for ~1 month & prior distros were FC2 & Yoper, which hold your hand much more than Arch... wink I'm still very much in the learning phase, but I've got Arch sucessfully lined out w/ all the stuff I plan to use (k3b, xfce4, gnome, kde, xine, mplayer, gkrellm, lm_sensors, firefox, thunderbird, tuxracer, realplayer10, etc, etc). I do believe I'm gonna pull the FC2 drive for now & stick w/ Arch.   8)  I like being made to havta work harder to get things to work.
BTW, great forum---tons of useful info which makes for a great experience for one trying to learn linux (coming from a WinNT-based world). I'll be recommending Arch to all (I am a member of various other forums dealing w/ pc's (PC Perspective) & the dark arts of oc'ing (xtremesys/ resources, hard, etc). My suggestion is, @ my primitive level of linux knowledge/ experience, that if I can get Arch running fine it should be a no brainer for those w/ some linux know-how. wink

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