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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 07-20-2011, 08:11 AM   #1
moonwalker
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nVidia Optimus observation and questions


Here is something I noticed no my ThinkPad W520: if I disable Optimus in BIOS and select IGP as a sole video card lspci lists only IGP and some programs (Chromium in particular) report 3D acceleration as unavailable (Chromium says "Intel mesa drivers are crash-prone"). If I enable Optimus in BIOS lspci lists both IGP and dedicated GPU and Chromium reports 3D acceleration as working. I use nouveau drivers. glxgears show no difference since vsync is enabled and I didn't bother to search how to disable it.
So it looks like some programs can use dedicated GPU instead of IGP when required which is the whole point of Optimus safe for ability to disable dedicated GPU completely when it's not in use. Any thoughts or suggestions? I can probably perform some more tests if anyone can give me an idea what to test exactly. Also, do you think this info can be of any help to devs who might be working on getting Optimus to work in Linux, if yes who that might be and how can I contact them to assist?

Last edited by moonwalker; 07-20-2011 at 08:13 AM.
 
Old 07-21-2011, 05:34 AM   #2
hf2046
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http://linux-hybrid-graphics.blogspot.com/
 
Old 07-21-2011, 08:14 AM   #3
moonwalker
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Originally Posted by hf2046 View Post
Thank you!
 
Old 07-26-2011, 03:13 AM   #4
Knightron
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Quote:
Originally Posted by moonwalker View Post
Here is something I noticed no my ThinkPad W520: if I disable Optimus in BIOS

Hello Moonwalker, i have a samsung laptop which also used optimus graphics, i was wondering how you do the above.
 
Old 07-26-2011, 08:48 AM   #5
moonwalker
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Originally Posted by Knightron View Post
Hello Moonwalker, i have a samsung laptop which also used optimus graphics, i was wondering how you do the above.
If you're asking about disabling Optimus and forcing discreet GPU then it depends on hardware and firmware. While ThinkPad W520 and some other ThinkPads allow to choose which GPU to use when Optimus is disabled consumer laptops usually don't have that option and when you disable Optimus you are stuck with IGP only, that's the drawback of consumer vs professional products.
 
Old 09-08-2011, 11:40 AM   #6
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Old 10-02-2011, 05:38 AM   #7
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another spammer reported. It seems spammers love this thread.
 
Old 10-04-2011, 01:03 AM   #8
cajunman
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Question ThinkPad W520

Hi all,
My first post for assistance, so please bare with me. I have a new Lenovo ThinkPad W520 with NVIDIA Quadro 2000M graphics. I'm running RHEL5.5 kernel 2.6.18-194. I have not upgraded RHEL due to other applications requiring this release, so I'm kind of stuck here. Currently, the VESA graphics driver works. However, I can't seem to get the NVIDIA graphics package to work. I have tried running the latest NVIDIA driver package: NVIDIA-Linux-x84_64-280.133.run but X still fails to start. I have attached a copy of the xorg.0.log file in case there is something in there which I haven't found. The only messge I remember seeing is something like "unable to detect display". I also am having some issues with getting the USB 3.0 drivers for this kernal. Any assisstance is much appreciated.
Attached Files
File Type: log Xorg.0.log (15.5 KB, 1 views)
 
Old 10-04-2011, 01:38 AM   #9
corp769
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Quote:
Originally Posted by cajunman View Post
Hi all,
My first post for assistance, so please bare with me. I have a new Lenovo ThinkPad W520 with NVIDIA Quadro 2000M graphics. I'm running RHEL5.5 kernel 2.6.18-194. I have not upgraded RHEL due to other applications requiring this release, so I'm kind of stuck here. Currently, the VESA graphics driver works. However, I can't seem to get the NVIDIA graphics package to work. I have tried running the latest NVIDIA driver package: NVIDIA-Linux-x84_64-280.133.run but X still fails to start. I have attached a copy of the xorg.0.log file in case there is something in there which I haven't found. The only messge I remember seeing is something like "unable to detect display". I also am having some issues with getting the USB 3.0 drivers for this kernal. Any assisstance is much appreciated.
Hello,

Please create a new thread about your issue; What you are doing is considered thread jacking. Thank you for understanding,

Josh
 
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Old 10-04-2011, 02:22 AM   #10
cajunman
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SORRY! didn't realize I was doing something incorrectly. Will do. Thanks for the correction.
 
Old 10-04-2011, 04:33 AM   #11
cascade9
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@ cajunman- RHEL 5.5 with a ThinkPad W520? Bad idea. RHEL 5.5 isnt going to support the hardware well, if at all. Its also an 'optimus' laptop, installing the nVidia drivers without doing some work setting up the lapop will just kill X (your desktop).

I'll post more on anthoer thread, if/when you make one.

Last edited by cascade9; 10-04-2011 at 06:42 AM. Reason: typo
 
  


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