I recently bought a new laptop with an Intel Core i7-7700HQ (HD Graphics 630 onboard graphics card) and a GeForce GTX 1060. When I use it at home, I use a Dell 1440p Monitor as a second screen. When I use the GeForce card everything works fine, however, it has a noisy fan and is therefore unsuitable for everyday-work. I want to use my intel onboard graphics for non-gpu-intensive tasks. It works under Windows, but on Linux, the second monitor is not detected.
It has probably nothing to do with the desktop environment (DE) since xrandr doesn't list my monitor while the nVidia card is disabled. Furthermore, I have two DEs (Cinnamon and KDE Plasma) installed and the monitor is not detected in both and neither in the login screen.
This is the output of inxi -F when I have Intel Graphics activated:
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System: Host: fabian-Aspire-VN7-793G Kernel: 4.8.0-58-generic x86_64 (64 bit)
Desktop: KDE Plasma 5.8.7 Distro: Linux Mint 18.2 Sonya
Machine: System: Acer (portable) product: Aspire VN7-793G v: V1.03
Mobo: KBL model: Neptune_KLS v: V1.03
Bios: Insyde v: V1.03 date: 02/17/2017
CPU: Quad core Intel Core i7-7700HQ (-HT-MCP-) cache: 6144 KB
clock speeds: max: 3800 MHz 1: 799 MHz 2: 799 MHz 3: 825 MHz 4: 799 MHz
5: 2940 MHz 6: 3186 MHz 7: 1459 MHz 8: 3191 MHz
Graphics: Card-1: Intel Device 591b
Card-2: NVIDIA Device 1c20
Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa)
Resolution: 3840x2160@60.02hz
GLX Renderer: Mesa DRI Intel Kabylake GT2 GLX Version: 3.0 Mesa 12.0.6
Audio: Card Intel Device a171 driver: snd_hda_intel
Sound: Advanced Linux Sound Architecture v: k4.8.0-58-generic
Network: Card-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter
driver: ath10k_pci
IF: wlp2s0 state: up mac: 58:00:e3:78:0a:cd
Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
driver: r8169
IF: enp3s0 state: down mac: 30:65:ec:bb:11:60
Drives: HDD Total Size: 1000.2GB (12.2% used)
ID-1: /dev/nvme0n1 model: N/A size: 512.1GB
ID-2: /dev/sda model: ST1000LM035 size: 1000.2GB
Partition: ID-1: / size: 113G used: 40G (37%) fs: ext4 dev: /dev/nvme0n1p5
ID-2: swap-1 size: 34.24GB used: 0.00GB (0%) fs: swap dev: /dev/nvme0n1p6
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 39.0C mobo: 31.0C
Fan Speeds (in rpm): cpu: N/A
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System: Host: fabian-Aspire-VN7-793G Kernel: 4.8.0-58-generic x86_64 (64 bit)
Desktop: KDE Plasma 5.8.7 Distro: Linux Mint 18.2 Sonya
Machine: System: Acer (portable) product: Aspire VN7-793G v: V1.03
Mobo: KBL model: Neptune_KLS v: V1.03
Bios: Insyde v: V1.03 date: 02/17/2017
CPU: Quad core Intel Core i7-7700HQ (-HT-MCP-) cache: 6144 KB
clock speeds: max: 3800 MHz 1: 3470 MHz 2: 3558 MHz 3: 3616 MHz
4: 3588 MHz 5: 3611 MHz 6: 3608 MHz 7: 3435 MHz 8: 3574 MHz
Graphics: Card-1: Intel Device 591b
Card-2: NVIDIA Device 1c20
Display Server: X.Org 1.18.4 driver: nvidia
Resolution: 2560x1440@59.95hz, 3840x2160@60.02hz
GLX Renderer: GeForce GTX 1060/PCIe/SSE2
GLX Version: 4.5.0 NVIDIA 375.66
Audio: Card Intel Device a171 driver: snd_hda_intel
Sound: Advanced Linux Sound Architecture v: k4.8.0-58-generic
Network: Card-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter
driver: ath10k_pci
IF: wlp2s0 state: up mac: 58:00:e3:78:0a:cd
Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
driver: r8169
IF: enp3s0 state: up speed: 100 Mbps duplex: full mac: 30:65:ec:bb:11:60
Drives: HDD Total Size: 1000.2GB (7.5% used)
ID-1: /dev/nvme0n1 model: N/A size: 512.1GB
ID-2: /dev/sda model: ST1000LM035 size: 1000.2GB
Partition: ID-1: / size: 113G used: 40G (37%) fs: ext4 dev: /dev/nvme0n1p5
ID-2: swap-1 size: 34.24GB used: 0.00GB (0%) fs: swap dev: /dev/nvme0n1p6
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 69.0C mobo: 37.0C gpu: 51C
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 246 Uptime: 0 min Memory: 959.0/32060.1MB
Client: Shell (bash) inxi: 2.2.35
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Screen 0: minimum 8 x 8, current 6400 x 2160, maximum 32767 x 32767
HDMI-0 connected 2560x1440+3840+0 (normal left inverted right x axis y axis) 527mm x 296mm
2560x1440 59.95*+
2048x1152 59.90
1920x1200 59.88
1920x1080 60.00 59.94 50.00 23.97 60.05 60.00 50.04
1680x1050 59.95
1600x1200 60.00
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 59.94 59.93
eDP-1-1 connected primary 3840x2160+0+0 382mm x 214mm
3840x2160 60.02*+
2048x1536 60.00
1920x1440 60.00
1856x1392 60.01
1792x1344 60.01
1920x1200 59.95
1920x1080 59.93
1600x1200 60.00
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1360x768 59.80 59.96
1152x864 60.00
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
960x600 60.00
960x540 59.99
800x600 60.00 60.32 56.25
840x525 60.01 59.88
800x512 60.17
700x525 59.98
640x512 60.02
720x450 59.89
640x480 60.00 59.94
680x384 59.80 59.96
576x432 60.06
512x384 60.00
400x300 60.32 56.34
320x240 60.05
DP-1-1 disconnected
HDMI-1-1 disconnected
1600x1200 (0x4d) 162.000MHz +HSync +VSync
h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.00KHz
v: height 1200 start 1201 end 1204 total 1250 clock 60.00Hz
1680x1050 (0x4e) 146.250MHz -HSync +VSync
h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.29KHz
v: height 1050 start 1053 end 1059 total 1089 clock 59.95Hz
1280x1024 (0x52) 108.000MHz +HSync +VSync
h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz
1024x768 (0x59) 65.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz
v: height 768 start 771 end 777 total 806 clock 60.00Hz
800x600 (0x60) 40.000MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz
v: height 600 start 601 end 605 total 628 clock 60.32Hz
640x480 (0x69) 25.175MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz
v: height 480 start 490 end 492 total 525 clock 59.94Hz
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Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767
eDP1 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 382mm x 214mm
3840x2160 60.02*+
3200x1800 60.00
2880x1620 60.00
2560x1440 60.00
2048x1536 60.00
1920x1440 60.00
1856x1392 60.01
1792x1344 60.01
2048x1152 60.00
1920x1200 59.95
1920x1080 60.00 59.93
1600x1200 60.00
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 60.00
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1368x768 60.00
1360x768 59.80 59.96
1152x864 60.00
1280x720 60.00
1024x768 60.00
1024x576 60.00
960x540 60.00
800x600 60.32 56.25
864x486 60.00
640x480 59.94
720x405 60.00
640x360 60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)