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The Ubuntu 18.04 official download website has the amd64 (64-bit) .iso file only. A 32-bit Ubuntu 18.04 .iso file is not available.

I have 2 Dell Latitude E6420 laptops with Intel motherboards. On one motherboard, the Ubuntu 18.04 installation seemed to work OK, but not on the other. Is there a download specifically for Intel motherboards, and how do I get it? Any other tips are appreciated. Specifically, in one motherboard, the one with issues, the wifi switch will not activate and the wifi will not turn on.

• The Ubuntu 64-bit iso files with amd64 in the file name should work in your Dell Latitude E6420 laptops. (There is no download specifically for Intel motherboards, the same iso files work for all brands of motherboards for Intel type PCs (typically with Intel and AMD processors).)

Even if the computer's name and model numbers are the same, there can be different hardware components inside. In this case I would guess that there are different hardware for wifi. For example, if the wifi hardware is made by Broadcom, you need a proprietary driver.

Try the following command line in order to identify the wifi hardware,

lspci|grep -i net

You can expect to see

• one line for Ethernet (wired network) and


• one line for wireless network (the brand name and model should be found here)

You should also check that the wireless hardware is turned on. See the picture.

If you find wireless hardware by Broadcom, you can get more specific information about the version of Broadcom (the model number) via the command

lspci -nn -d 14e4:

and then you can select driver from the list in the following 'AskUbuntu answer',

Installing Broadcom Wireless Drivers

The switch for wifi on Dell Latitude E6420:

The different versions have everything to do with the CPU and nothing to do with the motherboard. The output of lscpu | grep op-mode will indicate whether a CPU supports 64-bit processing in which case you don't need a 32-bit ISO: Most CPUs released in the last 10 years will provide output like this:

lscpu | grep op-mode

CPU op-mode(s):        32-bit, 64-bit

If 64-bit is listed as an operating mode, simply install the standard amd64 ISO if not, you'll need to utilize a recent i386 image such as for 16.04 It does sound however that this is an XY problem and your real issue is wifi in which case this answer may be useful. Ideally if you want help with wifi troubleshooting you should review this and then edit your post to provide necessary information to help you. Cheers!