Go Back   nV News Forums > Linux Support Forums > NVIDIA Linux

Newegg Daily Deals

Reply
 
Thread Tools
Old 08-18-12, 12:14 PM   #1
Wadlax
Registered User
 
Wadlax's Avatar
 
Join Date: Feb 2006
Posts: 3
Default Basic Mosaic , 304 drivers , 4 monitors

Greetings.
I have 4 monitors connected to 2 x Geforce GTX 470
They are connected with SLI conector, but i had not setup SLI in Xorg config.

I use BaseMosaic
Option "MetaModes" "GPU-1.DFP-0: 1920x1080+0+0, GPU-1.DFP-2:
1920x1080+1920+0, GPU-0.DFP-0: 1920x1080+0+1080, GPU-0.DFP-2: 1920x1080+1920+1080"

I use nvidia-drivers-295.71 and all 4 monitors work.
After installing nvidia-drivers-304.37 -- i see that only 3 monitors work.
After reinstalling nvidia-drivers-295.71 all 4 monitors work again.



--In README for 295.71
--http://ru.download.nvidia.com/XFree8...igoptions.html
--"Base Mosaic is supported on all the configurations supported by SLI Mosaic Mode."

In announcement for 304.22
" Extended support for Base Mosaic to all G80+ SLI configurations with up to three displays. "

In README for 304.37
http://ru.download.nvidia.com/XFree8...igoptions.html
"Base Mosaic is supported on all G80 and higher SLI configurations up to three display devices."



So, some questions :

1. Does nvidia-drivers-304.37 support BaseMosaic with more than summary 3 monitors on all cards ?

2. Is it a regression , or intended feature downgrade ?

3. Will BaseMosaic support be extended for more than 3 monitors ?

4. How many monitors can be connected and used on GTX 680 ?

5. Will 2 x GTX 680 on nvidia-drivers-304.37 support summary 4 monitors ?




Edit : Yes, my bad. I thought, that in some README i saw Geforce was supported.
But "danix NVIDIA Corporation" state, that it does not supported.
http://www.nvnews.net/vbulletin/show...18&postcount=5

In any case. 4 monitors in my setup :
295.71 - unofficially works.
304.37 - officially does not work.
Wadlax is offline   Reply With Quote
Old 08-18-12, 08:50 PM   #2
JaXXoN
Registered User
 
Join Date: Jul 2005
Location: Munich
Posts: 910
Default Re: Basic Mosaic , 304 drivers , 4 monitors

Interesting that Base Mosaic worked for you with the consumer cards because this feature was only "reserved" for G80+ *Quadro* cards (including NVS). Nice to read that with LCDs getting cheaper and cheaper, nvidia slowly changes it's mind and also allows base mosaic for consumer cards. I'm pretty sure that the limitation to three LCDs is just a software thing (as you could drive four with the older version). Anyway, too my knowledge, there are GTX680 cards that support up to four displays without the need for base mosaic. However, you may need some DP or HDMI adaptors.

regards

Bernhard
JaXXoN is offline   Reply With Quote
Old 08-21-12, 01:06 AM   #3
Wadlax
Registered User
 
Wadlax's Avatar
 
Join Date: Feb 2006
Posts: 3
Default Re: Basic Mosaic , 304 drivers , 4 monitors

"Questions for Nvidia on linux GTX-680 support"
http://www.nvnews.net/vbulletin/showthread.php?t=176876


Until upgrade i will stop on 295 drivers.
Wadlax is offline   Reply With Quote
Old 09-09-12, 09:11 AM   #4
happyfunbot
Registered User
 
Join Date: Feb 2008
Posts: 19
Default Re: Basic Mosaic , 304 drivers , 4 monitors

Same problem here. I'm evidently stuck on 295 until this is fixed, because I cannot even figure out how to migrate my current Xinerama-based config to 304. Sigh. At this point, I've really lost any motivation to figure out how to make this work until I absolutely have to upgrade, but if anyone wants to help, here's what I've got. When I try to run this exact config on 304, static rotation doesn't work, but I *think* everything else is okay.

The real solution to this is for the driver to support four heads with RandR on my config. Clearly it can be made to work because I have been using the 50% solution with Xinerama successfully since 2009, and the rest of it feels like purely software.
Attached Thumbnails
Click image for larger version

Name:	4heads.jpg
Views:	115
Size:	62.2 KB
ID:	44137  
Attached Files
File Type: txt xorg.conf.txt (7.0 KB, 82 views)
happyfunbot is offline   Reply With Quote
Old 09-11-12, 04:30 PM   #5
xorbe
Unbuffered User
 
Join Date: Jun 2005
Posts: 388
Default Re: Basic Mosaic , 304 drivers , 4 monitors

Yeah, to fix rotation, the options changed, use something like:
Quote:
Option "MetaModes" "DFP-0: 1600x1200 { Rotation=left }, DFP-1: 1600x1200 { Rotation=left }, DFP-2: 1600x1200 { Rotation=left }"
xorbe is offline   Reply With Quote
Old 09-12-12, 11:11 AM   #6
WohthaN
Registered User
 
Join Date: Nov 2006
Posts: 7
Default Re: Basic Mosaic , 304 drivers , 4 monitors

Same problem here:

03:00.0 VGA compatible controller: NVIDIA Corporation GF114 [GeForce GTX 560 Ti] (rev a1)
04:00.0 VGA compatible controller: NVIDIA Corporation GF114 [GeForce GTX 560 Ti] (rev a1)

Debian Sid,

302.17-3 works with 4 monitors
304.48-1 same configuration as above, downgrades automatically to 3 monitors

That's too bad, this feature really rocks and i'd hate to lose it.
If there is anything I can do to help in fixing the issue, here I am!
WohthaN is offline   Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 06:29 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1998 - 2014, nV News.