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    Community Discussion 573 views · 4 replies ·
    Tofloor
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    jesterjke
    deepin
    2016-04-18 03:49
    Author
    Hi, guys. I need some help.
    I have a laptop with two video cards:integrated intel 4000 and nvidia 720M.
    1. lspci | egrep -i "vga|3d"
    2. 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
    3. 01:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/810M/820M / GT 620M/625M/630M/720M] (rev a1)
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    I am on free driver for a while, because proprietary doesn't work properly.(maybe it already fixed, but I do not want reinstall system, if something goes wrong)
    But even free driver should give me some perfomance, right?
    1. sudo cat /sys/kernel/debug/vgaswitcheroo/switch
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    It seems that my nvidia is off of the power.
    So I tried:
    1. sudo su
    2. echo ON > /sys/kernel/debug/vgaswitcheroo/switch
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    And it doesn't work.
    How can I turn on my nvidia card and not to broke the whole system?
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    dance707
    deepin
    2016-04-18 04:23
    #1
    Hi, Hybrid-graphics technologies are well supported on windows but still quite experimental in Linux. There are several methods to try in getting Optimus graphics to work in Linux. Like BIOS , PRIME, Bumblebee and newer NVIDIA driver.
    But I would be more inclined first to wait on Deepin's up-and-coming new Linux Kernel and other Deepin patches before making any big changes to your system.

    https://bbs.deepin.org/post/30883
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    jesterjke
    deepin
    2016-04-18 05:41
    #2
    I used PRIMEthing and it works!
    But.
    Intel:
    1. glxgears
    2. 321 frames in 5.0 seconds = 64.111 FPS
    3. 300 frames in 5.0 seconds = 59.993 FPS
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    Nvidia:
    1. DRI_PRIME=1 glxgears
    2. Running synchronized to the vertical refresh.  The framerate should be
    3. approximately the same as the monitor refresh rate.
    4. 8187 frames in 5.0 seconds = 1637.334 FPS
    5. 8252 frames in 5.0 seconds = 1650.348 FPS
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    Looks good.
    But I have FireWatch game, and it do not think so.
    On low settings it has higher fps with intel than with nvidia.
    What can I do?
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    dance707
    deepin
    2016-04-18 05:52
    #3
    https://bbs.deepin.org/post/30963
    I used PRIMEthing and it works!
    But.
    Intel:

    According to some of the Linux Wiki's using PRIME offers poor performance but does allow switching. Have you tried Bumblebee ?
    Reply View the author
    dance707
    deepin
    2016-04-18 06:13
    #4
    Edited by dance707 at 2016-4-17 10:13
    https://bbs.deepin.org/post/30963
    I used PRIMEthing and it works!
    But.
    Intel:

    If you do try, the apt-get will ask you whether or not to generate a xorg.conf for you, choose no
    Or, you can rm /etc/X11/xorg.conf manually
    But still like I mentioned above I would be more inclined to wait and see what Deepin's new kernel and patches offer.
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