View Single Post
Old 10-19-12, 01:51 PM   #1
RAMChYLD
Registered User
 
Join Date: Feb 2005
Location: Malaysia
Posts: 95
Post SLI ceased working in Ubuntu 12.10, Help!

Hi all,

When I replaced SuSE linux with Ubuntu 12.04 and then installed the nvidia driver, I was able to get SLI to work. However, I upgraded to 12.10 yesterday, and to my dismay SLI stopped working.

My LSPCI is as follows:
Code:
02:00.0 VGA compatible controller: NVIDIA Corporation C77 [nForce 750a SLI] (rev a2)
03:00.0 VGA compatible controller: NVIDIA Corporation GT200 [GeForce GTX 260] (rev a1)
04:00.0 VGA compatible controller: NVIDIA Corporation GT200 [GeForce GTX 260] (rev a1)
However, in nvidia-settings, I see that the 750a has somehow shoehorn itself in as GPU-1, between GPU-0 and GPU-2, which are the GTX260s.


In Ubuntu 12.04, it didn't exhibit this behavior. Instead, it managed to set up the two GTX260s as GPU-0 and GPU-1 respectively, and finally the 750a as GPU-2.

I'm interested to know if there is a way I can force the 12.04 nvidia drivers enumeration method onto the driver and make the 750a GPU-2 again. I noticed that the driver will only activate SLI if the two GPUs are enumerated in sequence before the 750a.
__________________
Rigs:
  • "Edison" - Phenom II X4 925 AM3 (Deneb), M4N98TD-EVO (nForce980a SLI), ENGTS450 DirectCU 1GB (GeForce GTS450) x2 (SLI), integrated GeForce8200, SoundBlaster X-Fi Titanium Fatal1ty Pro, 8GB DDR3-1600
  • "Sally" - Athlon64 x2 5000+ AM2 (Brisbane), M4N72-E (nForce750a SLI), ENGTS250 Dark Knight 1GB (GeForce GTS250) x2 (SLI), integrated GeForce8200, SoundBlaster X-Fi Titanium Fatal1ty Pro, 4GB DDR2-1066
  • "Dongwa" - Phenom II X4 945 AM3 (Deneb), M4N75TD (nForce750a SLI), ENGTX260-216SP 896MB (GeForce GTX260 216SP) x2 (SLI), integrated GeForce8200, SoundBlaster X-Fi Fatal1ty Champion, 8GB DDR3-1600
  • "Helen" - Athlon64 x2 6400+ AM2 (Windsor), M4N78 Pro (GeForce8300), ENGT520 1GB (GeForce GT520), integrated GeForce8300, AuzenTech Prelude X-Fi, 4GB DDR2-1066.
  • "Clementine" - Athlon64 x2 3800+ AM2 (Windsor), TF560A2+ (nForce560), V8402GL26 (GeForce 8400GS), SoundBlaster Live! 5.1, Sonnet Allegro FW400 PCIe, 2GB DDR2-800
RAMChYLD is offline   Reply With Quote