100% (1/1) Removing from Disk: net-voip/wengophone-bin-2.0-r1
I waited about 40 minutes more, then gave up and did a hard reset, rebooted and started the upgrade again, the complete rescue. I skipped the bootloader part, which turned out to be a mistake.
The next morning it was complete, and I rebooted. I got a message something like 'Error 15 - file not found'. I started rescue part again with only the bootloader part, fixed that, then rebooted. The boot process got to about 25% and then the screen went black, like it does when it's going into power sleep mode - I hit the escape key and got the following messages:
[ 36.053048] Device driver usbdev4.2-ep81 lacks bus and class support for being resumed.
[ 36.330964] Device driver usbdev4.2-ep81 lacks bus and class support for being resumed.
[ 36.338403] Device driver usbdev4.2-ep81 lacks bus and class support for being resumed.
[ 36.609283] Device driver usbdev4.2-ep81 lacks bus and class support for being resumed.
[ 36.616380] Device driver usbdev4.2-ep81 lacks bus and class support for being resumed.
[ 36.626863] Device driver usbdev4.2-ep81 lacks bus and class support for being resumed.
Now what?

