I have been privileged to get help from this forum before and am requesting help again - for a related issue.
I recently hooked up my work and personal laptops to a 2-port ATEN KVM (model CS1742) switch. The work laptop is fine, but when I switch to my personal laptop, graphics are all messed up and frozen and I have to restart my personal laptop essentially every time (Display parameters are set as indicated below). I have provided relevant details below and will be happy to share others as needed.
As part of my research, I read manipulating Xorg files used to be the way to go; however, it appears Xorg files don't exist (?) anymore. A few years ago, I had a gentle soul on this forum help me with display issues; this time, a KVM switch has joined the fray.
System Details (not that I understand them)
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System: Host: a-UL80VT Kernel: 4.8.0-53-generic x86_64 (64 bit gcc: 5.4.0) Desktop: Cinnamon 3.4.3 (Gtk 3.18.9-1ubuntu3.3) dm: lightdm Distro: Linux Mint 18.2 Sonya Machine: Mobo: ASUSTeK model: UL80VT v: 1.0 Bios: American Megatrends v: 214 date: 01/17/2011 CPU: Dual core Intel U7300 (-MCP-) cache: 3072 KB flags: (lm nx sse sse2 sse3 sse4_1 ssse3 vmx) bmips: 6932 clock speeds: min/max: 800/1300 MHz 1: 800 MHz 2: 1300 MHz Graphics: Card-1: Intel Mobile 4 Series Integrated Graphics Controller bus-ID: 00:02.0 chip-ID: 8086:2a42 Card-2: NVIDIA GT218M [GeForce G210M] bus-ID: 01:00.0 chip-ID: 10de:0a74 Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa) FAILED: nouveau Resolution: email@example.com, firstname.lastname@example.org GLX Renderer: Mesa DRI Mobile Intel GM45 Express GLX Version: 2.1 Mesa 12.0.6 Direct Rendering: Yes Audio: Card-1 NVIDIA High Definition Audio Controller driver: snd_hda_intel bus-ID: 01:00.1 chip-ID: 10de:0be3 Card-2 Intel 82801I (ICH9 Family) HD Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0 chip-ID: 8086:293e Sound: Advanced Linux Sound Architecture v: k4.8.0-53-generic Network: Card-1: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) driver: ath9k bus-ID: 03:00.0 chip-ID: 168c:002b IF: wlp3s0 state: up mac: <filter> Card-2: Qualcomm Atheros AR8131 Gigabit Ethernet driver: atl1c v: 188.8.131.52-NAPI port: ec00 bus-ID: 04:00.0 chip-ID: 1969:1063 IF: enp4s0 state: down mac: <filter> Drives: HDD Total Size: 500.1GB (5.6% used) ID-1: /dev/sda model: ST500LT012 size: 500.1GB serial: W3P0XRC7 Partition: ID-1: / size: 308G used: 23G (8%) fs: ext4 dev: /dev/sda5 ID-2: swap-1 size: 4.26GB used: 0.00GB (0%) fs: swap dev: /dev/sda6 RAID: System: supported: N/A No RAID devices: /proc/mdstat, md_mod kernel module present Unused Devices: none Sensors: System Temperatures: cpu: 60.0C mobo: N/A Fan Speeds (in rpm): cpu: N/A Repos: Active apt sources in file: /etc/apt/sources.list.d/official-package-repositories.list deb http: //packages.linuxmint.com sonya main upstream import backport deb http: //archive.ubuntu.com/ubuntu xenial main restricted universe multiverse deb http: //archive.ubuntu.com/ubuntu xenial-updates main restricted universe multiverse deb http: //archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse deb http: //security.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse deb http: //archive.canonical.com/ubuntu/ xenial partner Info: Processes: 185 Uptime: 4:22 Memory: 1352.4/3916.8MB Init: systemd v: 229 runlevel: 5 default: 2 Gcc sys: 5.4.0 Client: Unknown python2.7 client inxi: 2.2.35 OS: Mint (used daily) and Windows (used ocassionally). Monitors: ASUS VS238 VGA 1920X1080 67KHz 60Hz set at 1920 x 1080 (16:9) HP Compaq LA1951g set at 1280 x 1024 (5:4) - serves as an extension of the ASUS (primary) monitor