To add, I tried to install the stock image from Android -- specifically 6.0.1 (M4B30Z, Dec 2016), found here, which gave some errors and failed to fully install (though it did change the look of the bootloader.) I still was stuck with the UBports Recovery program. So, I looked around and found the TWRP recovery program for hammerhead (Nexus 5 codename) and successfully installed that. I used it to wipe and format the drive, since all my previous attempts at installations (of either Ubuntu Touch or Android or LineageOS) failed. Then, I tried once again to install LineageOS, by transferring the file to the phone (see code below) and then using TWRP to install it. This worked. mark@debian:~/Downloads/Nexus5/LineageOS$ adb push lineage-14.1-20190301-UNOFFICIAL-hammerhead.zip /sdcard/. lineage-14.1-20190301-UNOFFICIAL-hamme... 4.4 MB/s (329881284 bytes in 71.197s) I must say that the UBports recovery program needs improvement. It's far inferior to the TWRP recovery program. Anyway, my issue is solved. I can now reinstall Ubuntu Touch. [edit] I did reinstall it. So, I'm good to go.

I resolved this by moving phone to my ubuntu 18 laptop. i had to add the USB device per this page: https://android.stackexchange.com/questions/144966/how-do-i-get-my-device-detected-by-adb-on-linux Started ubtouch and it's now installing.

@frapie can you run adb? is adb set in your PATH?

@NeoTheThird Double post here : https://forums.ubports.com/topic/696/trying-to-install-on-nexus-4 The last post from lashenric can be deleted isn't it ? (you can delete my post too)

@UniSuperBox I have tried it in a USB2 port and it was in a USB2 only port when I ran dmesg -w The fact that I have switched the USB modules between the devices rules out an obstruction. It must be a hardware issue past the USB port, or a software issue on the UT device.