Laptop doesn't recognize 2 external monitors

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Laptop doesn't recognize 2 external monitors

Post by Samiscool172 » Sat Aug 24, 2019 3:16 pm

I dual boot Windows 10 and Linux Mint 19.2. On Windows, my 2 external monitors are recognized just fine, HDMI and VGA connections. On Linux, the Display only shows the laptop monitor. Today is Day #1 with me using Linux so I am the ultimate NOOB but was hoping for some assistance in getting my external monitors recognized.

Code: Select all

sam@sam-Legion-Y540-15IRH-PG0:~$ inxi -Fxz
  Host: sam-Legion-Y540-15IRH-PG0 Kernel: 4.15.0-58-generic x86_64 bits: 64 
  compiler: gcc v: 7.4.0 Desktop: Cinnamon 4.2.3 
  Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic 
  Type: Laptop System: LENOVO product: 81SY v: Legion Y540-15IRH-PG0 
  serial: <filter> 
  Mobo: LENOVO model: LNVNB161216 v: SDK0R32862 WIN serial: <filter> 
  UEFI: LENOVO v: BHCN28WW date: 05/28/2019 
  ID-1: BAT0 charge: 53.0 Wh condition: 53.0/52.5 Wh (101%) 
  model: LGC L17L3PG1 status: Full 
  Topology: 6-Core model: Intel Core i7-9750H bits: 64 type: MT MCP 
  arch: Kaby Lake rev: A L2 cache: 12.0 MiB 
  flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 62208 
  Speed: 856 MHz min/max: 800/4500 MHz Core speeds (MHz): 1: 842 2: 840 
  3: 855 4: 900 5: 853 6: 841 7: 829 8: 850 9: 842 10: 841 11: 842 12: 900 
  Device-1: NVIDIA vendor: Lenovo driver: N/A bus ID: 01:00.0 
  Display: x11 server: X.Org 1.19.6 driver: fbdev,nouveau 
  unloaded: modesetting,vesa resolution: 1920x1080~77Hz 
  OpenGL: renderer: llvmpipe (LLVM 8.0 256 bits) v: 3.3 Mesa 19.0.8 
  direct render: Yes 
  Device-1: Intel Cannon Lake PCH cAVS vendor: Lenovo driver: snd_hda_intel 
  v: kernel bus ID: 00:1f.3 
  Device-2: NVIDIA vendor: Lenovo driver: snd_hda_intel v: kernel 
  bus ID: 01:00.1 
  Device-3: DisplayLink type: USB driver: cdc_ncm,snd-usb-audio 
  bus ID: 2-3.3:9 
  Device-4: Samson Meteorite condenser microphone type: USB 
  driver: hid-generic,snd-usb-audio,usbhid bus ID: 1-2.2.2:16 
  Sound Server: ALSA v: k4.15.0-58-generic 
  Device-1: Intel Wireless-AC 9560 [Jefferson Peak] driver: iwlwifi 
  v: kernel bus ID: 00:14.3 
  IF: wlp0s20f3 state: up mac: <filter> 
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Lenovo driver: r8169 v: 2.3LK-NAPI port: 3000 bus ID: 07:00.0 
  IF: enp7s0 state: down mac: <filter> 
  IF-ID-1: enx00e04c6fb651 state: down mac: <filter> 
  Local Storage: total: 1.03 TiB used: 15.68 GiB (1.5%) 
  ID-1: /dev/nvme0n1 vendor: Western Digital 
  model: PC SN520 SDAPMUW-128G-1101 size: 119.24 GiB 
  ID-2: /dev/sda vendor: Seagate model: ST1000LM049-2GH172 size: 931.51 GiB 
  ID-1: / size: 18.21 GiB used: 6.51 GiB (35.8%) fs: ext4 dev: /dev/sda3 
  ID-2: /home size: 357.83 GiB used: 9.14 GiB (2.6%) fs: ext4 dev: /dev/sda5 
  ID-3: swap-1 size: 7.45 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda4 
  System Temperatures: cpu: 66.0 C mobo: N/A 
  Fan Speeds (RPM): N/A 
  Processes: 279 Uptime: 45m Memory: 7.71 GiB used: 2.21 GiB (28.7%) 
  Init: systemd runlevel: 5 Compilers: gcc: 7.4.0 Shell: bash v: 4.4.20 
  inxi: 3.0.32 

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Re: Laptop doesn't recognize 2 external monitors

Post by ElPinguino » Tue Aug 27, 2019 2:46 pm

I am also a NOOB. I booted a live Linux Mint 19.2 Cinnamon session from a USB drive on a Windows 7 machine for the first time on Saturday. All went pretty well, but like you I could not get an external VGA display to work properly. It would show the Linux Mint logo but not the actual desktop. Yesterday I had time to explore and found a solution. Select the Displays option under Preferences and select Mirrored Displays. This did the trick for me on both VGA and HDMI ports. Since I'm still running live and have not actually installed Mint I will have to change this setting every time I boot into Linux. Good Luck!

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