Totally awesome experience!!!
This is the first time in 15 years or more that I have been able to dump Windows completely and operate almost exclusively with this very incredible distro of Linux. The Cinnamon/Lightdm works better than any other that I have tried. And when I need to run a Windows app I just run it under Win7 under Virtualbox under Mint.
So, yesterday I upgraded to Mint 19 using the "mintupgrade" utility and followed a tutorial at https://www.tecmint.com/upgrade-to-linux-mint-19/
It took a few hours and I had to be extra careful but I am but glad to say that it came up and ran the first time.
So now I am doing a few benchmarks and the first one is to use Ookla Speedtest to see if the ethernet would still perform all the way out to my ISP's server and back at 970 Mbits per second download. Well, I only get 580 Mbits download.
Is this a kernel issue, and ethernet driver issue or TCP stack issue? Hard to say. But I am wondering if I need to make some tweaks to get back to my original speeds that I had with 18.3.
My office assistant runs an old desktop with Mint 18.3 and get 970 Mbits still today so I am thinking this is sort of related to well let's call it bloat in 19 (or Ubuntu 18.04).
Here is a profile of my system hardware
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# inxi -Fxz System: Host: laptop-mint Kernel: 4.15.0-38-generic x86_64 bits: 64 gcc: 7.3.0 Desktop: Cinnamon 3.8.9 (Gtk 3.22.30-1ubuntu1) Distro: Linux Mint 19 Tara Machine: Device: laptop System: LENOVO product: 20BX001PUS v: ThinkPad T450s serial: <filter> Mobo: LENOVO model: 20BX001PUS v: SDK0E50510 WIN serial: <filter> UEFI [Legacy]: LENOVO v: JBET63WW (1.27 ) date: 11/10/2016 Battery BAT0: charge: 18.2 Wh 97.1% condition: 18.8/23.2 Wh (81%) model: SANYO 45N1773 status: N/A BAT1: charge: 18.1 Wh 96.9% condition: 18.7/23.2 Wh (81%) model: SANYO 45N1775 status: N/A CPU: Dual core Intel Core i5-5200U (-MT-MCP-) arch: Broadwell rev.4 cache: 3072 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 8778 clock speeds: max: 2700 MHz 1: 1460 MHz 2: 1091 MHz 3: 1489 MHz 4: 1456 MHz Graphics: Card: Intel HD Graphics 5500 bus-ID: 00:02.0 Display Server: X.Org 1.19.6 drivers: modesetting (unloaded: fbdev,vesa) Resolution: firstname.lastname@example.org, email@example.com OpenGL: renderer: Mesa DRI Intel HD Graphics 5500 (Broadwell GT2) version: 4.5 Mesa 18.0.5 Direct Render: Yes Audio: Card-1 Intel Wildcat Point-LP High Definition Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0 Card-2 Intel Broadwell-U Audio Controller driver: snd_hda_intel bus-ID: 00:03.0 Sound: Advanced Linux Sound Architecture v: k4.15.0-38-generic Network: Card-1: Intel Ethernet Connection (3) I218-V driver: e1000e v: 3.2.6-k port: 3080 bus-ID: 00:19.0 IF: enp0s25 state: up speed: 1000 Mbps duplex: full mac: <filter> Card-2: Intel Wireless 7265 driver: iwlwifi bus-ID: 03:00.0 IF: wlp3s0 state: down mac: <filter> Drives: HDD Total Size: 274.1GB (17.2% used) ID-1: /dev/sda model: Samsung_SSD_850 size: 250.1GB temp: 0C ID-2: /dev/sdb model: SanDisk_SSD_U110 size: 16.0GB temp: 0C ID-3: USB /dev/sdc model: Secure_Key_3z size: 8.0GB temp: 0C Partition: ID-1: / size: 128G used: 17G (14%) fs: ext4 dev: /dev/sda1 RAID: No RAID devices: /proc/mdstat, md_mod kernel module present Sensors: System Temperatures: cpu: 47.5C mobo: N/A Fan Speeds (in rpm): cpu: 0 Info: Processes: 250 Uptime: 14:39 Memory: 2936.4/11709.1MB Init: systemd runlevel: 5 Gcc sys: 7.3.0 Client: Shell (bash 4.4.191) inxi: 2.3.56