Applet for switch between Intel and NVIDIA graphics missing

[Cosmic Penguin]

Hi,

My laptop which has a NVIDIA graphics card using Optimus (GeForce GT 640M LE) has a problem with switching between the two modes in Linux Mint 17.2 Cinnamon. The new graphics switching applet that should have been added in 17.2 has been missing, even after I made a clean install of it back in early July. When I tried to switch the cards using nvidia-settings, it shows a blank error message and failed to switch to discrete graphics. Now I tried to install prime-indicator, but while its logo shows that I'm using the NVIDIA card, right click on it shows that I'm on the Intel card and switching attempts were made with no response.

What should I do such that I can enable the usage of my NVIDIA card?

[Cosmic Penguin]

Here is my

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inxi -Fxz

output:

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System:    Host: ivan-LIFEBOOK-LH772 Kernel: 3.16.0-38-generic x86_64 (64 bit, gcc: 4.8.2) 
           Desktop: Cinnamon 2.6.13  Distro: Linux Mint 17.2 Rafaela
Machine:   System: FUJITSU product: LIFEBOOK LH772
           Mobo: FUJITSU model: FJNB243 version: G4 Bios: FUJITSU // Phoenix version: Version 1.05 date: 04/25/2012
CPU:       Dual core Intel Core i5-3210M CPU (-HT-MCP-) cache: 3072 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9977.02 
           Clock Speeds: 1: 2968.554 MHz 2: 2024.414 MHz 3: 2696.289 MHz 4: 2908.203 MHz
Graphics:  Card-1: Intel 3rd Gen Core processor Graphics Controller bus-ID: 00:02.0 
           Card-2: NVIDIA GK107M [GeForce GT 640M LE] bus-ID: 01:00.0 
           X.Org: 1.15.1 drivers: intel (unloaded: fbdev,vesa) FAILED: nouveau Resolution: 1366x768@60.0hz 
           GLX Renderer: Mesa DRI Intel Ivybridge Mobile GLX Version: 3.0 Mesa 10.1.3 Direct Rendering: Yes
Audio:     Card: Intel 7 Series/C210 Series Family High Definition Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0 
           Sound: Advanced Linux Sound Architecture ver: k3.16.0-38-generic
Network:   Card-1: Ralink RT3290 Wireless 802.11n 1T/1R PCIe driver: rt2800pci ver: 2.3.0 bus-ID: 04:00.0
           IF: wlan0 state: up mac: <filter>
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller 
           driver: r8169 ver: 2.3LK-NAPI port: 3000 bus-ID: 03:00.0
           IF: eth0 state: down mac: <filter>
Drives:    HDD Total Size: 750.2GB (6.7% used) 1: id: /dev/sda model: WDC_WD7500BPVT size: 750.2GB 
Partition: ID: / size: 321G used: 47G (16%) fs: ext4 ID: swap-1 size: 8.19GB used: 0.00GB (0%) fs: swap 
RAID:      No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors:   System Temperatures: cpu: 73.0C mobo: N/A 
           Fan Speeds (in rpm): cpu: N/A 
Info:      Processes: 211 Uptime: 12 min Memory: 2570.1/7845.4MB Runlevel: 2 Gcc sys: 4.8.4 
           Client: Shell (bash 4.3.11) inxi: 1.9.17 

[Pjotr]

Try installing the nvidia-352 driver by means of the graphics-drivers PPA:
https://sites.google.com/site/easylinux ... -mamarley-
(item 1, left column)

Afterwards, reboot.

[Cosmic Penguin]

Try installing the nvidia-352 driver by means of the graphics-drivers PPA:
https://sites.google.com/site/easylinux ... -mamarley-
(item 1, left column)

Afterwards, reboot.

Didn't work unfortunately.

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lsmod | grep nvidia

shows zero terminal output while

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lsmod | grep nouveau

shows that my laptop is now using Nouveau....

[Cosmic Penguin]

Any suggestions as to how I should re-install the graphics card drivers?

[Cosmic Penguin]

Any suggestions as to how I should re-install the graphics card drivers?

Bump since I still can't solve this problem.